What Maintenance Contract Businesses Sell For in 2026
The 2026 valuation guide for B2B maintenance contract businesses: the 7-band EBITDA ladder, the 30 factors buyers score, and 2025-2026 UK and US deal data.
Updated July 2026 · Refreshed quarterly.
The B2B maintenance sector, spanning planned preventive maintenance (PPM), facilities management, and statutory compliance, is currently trading at a structural premium to the wider building services market. Acquirers are not buying vans and tools; they are buying the forward visibility of contracted, recurring revenue. When Sureserve acquired Kinovo for £56.4m in 2025 or Investcorp took a majority stake in Smart Managed Solutions at a >$200m valuation, they were pricing in the defensive moat of statutory compliance.
However, the multiple paid for a maintenance business is highly sensitive to the quality of the revenue. A £1.5M EBITDA business relying on informal "handshake" agreements and reactive break-fix work will struggle to clear 5.0x. The exact same EBITDA, underpinned by multi-year, index-linked B2B contracts and managed through a mature CAFM system, will routinely command 6.5x to 7.5x in a competitive process. This guide unpacks exactly how acquirers price that difference in 2026.
Contents
- Why Two Businesses with the Same EBITDA Sell for Very Different Multiples
- The Maintenance Sub-Niche Attractiveness Matrix
- The 2026 EBITDA Multiples Ladder
- What Kills the Multiple
- Worked Examples
- 2025 and 2026 Transactions: United Kingdom
- 2025 and 2026 Transactions: United States
- The Buyer Universe: Who is Acquiring in 2026
- Demand Drivers and Regulatory Calendar
- Deal Structure: How the Consideration is Paid
- Public Company Multiples
- Regulatory Economics: The Cost and Value of Compliance
- The Diligence Question Bank: 25 Questions Buyers Will Ask
- The 12-Month Preparation Timeline
- FAQ
- Glossary
- Methodology and Sources
Why Two Businesses with the Same EBITDA Sell for Very Different Multiples
The 30-factor framework below details exactly how corporate development teams and private equity analysts adjust their base multiples for maintenance businesses.
| Factor |
Premium Profile |
Discount Profile |
| Dimension A: Financial (22% weighting) |
|
|
| 1. Revenue growth (3-year CAGR) |
>15% organic CAGR |
Flat or declining |
| 2. Quality of earnings |
Contracted PPM >70% of revenue |
Reactive/project work >60% |
| 3. Gross margin vs niche benchmark |
Top quartile (e.g., >45% for specialist compliance) |
Bottom quartile, eroding |
| 4. Working capital efficiency |
Negative working capital (paid in advance) |
High debtor days, cash hungry |
| 5. Forecast credibility |
>80% of next 12 months' revenue already contracted |
"We usually get the phone call" |
| Dimension B: Deal Process & Buyer Access (22% weighting) |
|
|
| 6. Specialist representation |
Dedicated sell-side adviser in the FM/compliance niche |
Generalist high-street broker or unrepresented |
| 7. Buyer access |
40+ pre-qualified, active strategic/PE acquirers contacted |
2-3 local competitors approached directly |
| 8. Niche expertise |
Adviser has a track record closing deals in this specific trade |
Adviser is learning the sector on the job |
| 9. Adviser brand |
Known and respected by the institutional buyer community |
Unknown entity, poorly formatted IM |
| 10. Evidenced demand |
Documented buyer search criteria explicitly matching the business |
Hoping for a strategic fit by chance |
| Dimension C: Customer & Revenue (16% weighting) |
|
|
| 11. Customer concentration |
No single client >10% of revenue |
Top client >25% of revenue |
| 12. Revenue diversification |
Spread across healthcare, education, commercial real estate |
Heavily tied to one volatile sector (e.g., retail) |
| 13. Contract quality |
3 to 5-year auto-renewing, index-linked B2B contracts |
1-year terms or informal handshake agreements |
| 14. Retention rate |
Logo and revenue retention >95% |
High churn, constantly replacing lost contracts |
| 15. Cross-sell and upsell |
Proven "Trojan Horse" model (PPM leading to high-margin remedial) |
Single-service only, leaving money on the table |
| Dimension D: Operations (14% weighting) |
|
|
| 16. Utilisation rate |
Optimised route density, high engineer productivity |
Geographically scattered, high windscreen time |
| 17. Scheduling and dispatch |
Automated via mature CAFM (e.g., Joblogic, Simpro) |
Manual whiteboards or Excel spreadsheets |
| 18. Subcontract dependency |
>90% self-delivered by direct labour |
>30% subcontracted, losing margin and control |
| 19. Right-first-time rate |
Consistently >90% |
High callback frequency, eroding margin |
| 20. Systems and data |
Real-time SLA compliance reporting available for buyer DD |
Inability to prove SLA adherence |
| Dimension E: People & Organisation (13% weighting) |
|
|
| 21. Key-person dependency |
Owner works ON the business, not IN it |
Owner holds all key client relationships and quotes |
| 22. Management depth |
Competent second-tier management team in place |
Zero management layer below the founder |
| 23. Workforce retention |
Engineer turnover significantly below industry average |
Constant churn of qualified technicians |
| 24. Documentation |
Comprehensive SOPs, training matrix, H&S records |
Knowledge lives in the founder's head |
| 25. Incentive alignment |
Key management tied in with LTIPs or bonuses |
Team has no financial stake in the outcome |
| Dimension F: Strategic (13% weighting) |
|
|
| 26. Market position |
Dominant regional player or highly specialised national niche |
Undifferentiated "me-too" local contractor |
| 27. Regulatory tailwind |
Services mandated by law (e.g., L8, SFG20, BS 5839) |
Discretionary spend easily cut in a downturn |
| 28. Accreditation moat |
UKAS, BAFE, NICEIC, or ISO accreditations held |
Lacking barrier-to-entry certifications |
| 29. Organic growth engine |
Predictable inbound lead generation and referral systems |
Solely reliant on founder's personal network |
| 30. Exit readiness |
Clean accounts, sensible lease, no outstanding litigation |
Skeletons in the closet, messy corporate structure |
Note on Dimension B: The deal process is weighted equally to the financials. This is the single cheapest dimension to move, because it requires no internal business change: only the right representation to create competitive tension.
The Maintenance Sub-Niche Attractiveness Matrix
Not all maintenance contracts are valued equally. Acquirers price statutory, life-safety compliance higher than soft FM because the spend is non-discretionary.
| Sub-Niche |
Buyer Attractiveness |
Valuation Premium |
Rationale |
| Lift & Escalator Maintenance |
Very High |
High |
Severe barrier to entry, strict LOLER statutory requirements, extreme stickiness. |
| Fire Alarm & Detection |
Very High |
High |
BS 5839 compliance is mandatory. High margin remedial work follows the PPM. |
| Water Hygiene & Legionella |
High |
High |
ACoP L8 statutory compliance. Highly recurring, excellent route density potential. |
| Commercial HVAC |
High |
Medium-High |
F-Gas and TM44 regulations drive demand. Strong PE consolidation ongoing. |
| Electrical Compliance |
High |
Medium |
EICR mandates drive volume. Highly fragmented, excellent bolt-on target. |
| Electronic Security / CCTV |
Medium-High |
Medium |
Sticky contracts, but slightly more discretionary than life safety. |
| Pest Control |
Medium-High |
Medium |
High route density and recurring revenue, but lower technical barrier to entry. |
| Fleet Maintenance |
Medium |
Medium |
Essential B2B service, but capital intensive and lower gross margins. |
| General Hard FM |
Medium |
Low-Medium |
Often commoditised unless focused on complex environments (e.g., healthcare). |
| Soft FM (Cleaning/Guarding) |
Low-Medium |
Low |
High labour intensity, low margin, low barrier to entry. Volume play. |
The 2026 EBITDA Multiples Ladder
Note: Businesses generating below £250,000 in Seller's Discretionary Earnings (SDE) are typically priced at 2.0x to 3.5x SDE. They are usually heavily dependent on the owner-operator and rely on informal agreements rather than assignable B2B contracts.
£250K to £500K EBITDA: 3.5x – 4.5x
At this level, the business has moved beyond a pure lifestyle operation. There is a small team, excellent local route density, and the beginnings of formalised contracts.
- The Buyer: Local competitors looking for geographic expansion, or search funds.
- The Discount: The owner is still heavily involved in quoting and client management. If they leave, the contracts might follow.
- The Value Move: Transition the top 20 clients from "handshake" reactive arrangements to formal 12-month PPM contracts.
£500K to £1M EBITDA: 4.5x – 6.0x
This is where private equity begins to take notice for bolt-on acquisitions. The business has a strong regional presence and a management layer below the founder.
- The Buyer: Private equity-backed platforms (e.g., The Pace Group, The Compliance Group) executing buy-and-build strategies.
- The Discount: Customer concentration is often a risk here. If one FM company provides 25% of the revenue, the multiple will narrow toward the bottom of the band.
- The Value Move: Ensure recurring revenue (PPM and tied remedial) consistently exceeds 50% of total turnover.
£1M to £2M EBITDA: 6.0x – 7.5x
A business of this size is a highly attractive asset. It has platform potential, >70% contracted recurring revenue, and often multi-trade capabilities (e.g., HVAC and Electrical).
- The Buyer: Lower mid-market private equity funds looking for a new platform, or large strategic trade buyers.
- The Discount: Inability to prove SLA adherence due to poor CAFM data.
- The Value Move: Implement a tier-one CAFM system (like Joblogic or Simpro) to provide unimpeachable data on first-time fix rates and SLA compliance during due diligence.
£2M to £5M EBITDA: 7.5x – 9.0x
These are national or super-regional operators. They hold multi-year, blue-chip B2B contracts and benefit from significant economies of scale.
- The Buyer: Mid-market private equity (e.g., LDC, Bowmark) and international strategic acquirers.
- The Discount: Margin erosion if long-term contracts lack strong inflation indexation clauses.
- The Value Move: Institutionalise the sales and marketing engine so growth is entirely divorced from the founder's personal network.
£5M to £10M EBITDA: 9.0x – 12.0x
A Tier 1 private equity target. These businesses boast high margins, tech-enabled delivery, and impenetrable compliance moats.
- The Buyer: Large-cap private equity and global FM conglomerates.
- The Discount: Over-reliance on subcontracted labour, which dilutes margin and operational control.
- The Value Move: Demonstrate a flawless "Trojan Horse" model where low-margin PPM reliably converts into high-margin project and remedial work across a vast client base.
£10M+ EBITDA: 12.0x+
At this scale, the business is priced as an infrastructure-like asset. It offers absolute revenue predictability and severe barriers to entry.
- The Buyer: Global private equity (e.g., Bain Capital, CD&R) and listed multinational PLCs.
- The Discount: Very few discounts apply here unless there is a fundamental structural flaw in the market.
- The Value Move: Run a highly competitive, global auction process through a specialist M&A adviser.
What Kills the Multiple
In the maintenance sector, corporate development directors look for specific red flags that immediately discount the offer or kill the deal entirely.
"Handshake" Agreements Instead of Contracts
A buyer is purchasing future cash flow. If your £2M revenue is based on clients who have "used us for ten years" but have no signed, assignable B2B contract, the buyer will treat that revenue as reactive. Reactive revenue commands a significantly lower multiple than contracted PPM.
High Customer Concentration
If a single client, especially a large FM aggregator, accounts for more than 20% of your revenue, the buyer prices in the catastrophic risk of losing that contract. The multiple will be heavily discounted, or a large portion of the consideration will be deferred into an earn-out tied to that specific client's retention.
Pricing Without Inflation Indexation
In an inflationary environment, a 3-year fixed-price maintenance contract is a liability, not an asset. Buyers will scrutinise your contracts for indexation clauses (e.g., tied to RPI or CPI). If you cannot pass on rising labour and materials costs, your future EBITDA is compromised.
Key-Person Dependency
If the founder holds the relationships with the top ten clients, the business is unsellable at a premium. The buyer is acquiring a job, not an asset. The relationships must be institutionalised and managed by an employed account management team.
Poor CAFM Data
During due diligence, a buyer will demand proof of your SLA compliance, first-time fix rates, and engineer utilisation. If your data is buried in Excel spreadsheets or a legacy bespoke system, the buyer will assume the worst. A modern, cloud-based CAFM system is non-negotiable for a premium valuation.
Worked Examples
The following examples are illustrative constructions designed to show how the 30-factor framework applies in practice.
Example A: The Discount Profile (Reactive & Dependent)
- Revenue: £4,000,000
- EBITDA: £600,000 (15% margin)
- Profile: 70% of revenue is reactive project work. The remaining 30% is maintenance, but mostly on 1-year rolling agreements. The founder handles all major quotes. Data is managed on spreadsheets.
- Valuation: The lack of contracted recurring revenue and poor systems drag the multiple to the bottom of the £500K–£1M band.
- Enterprise Value: £600,000 × 4.5x = £2,700,000
Example B: The Premium Profile (Contracted & Systemised)
- Revenue: £3,500,000
- EBITDA: £600,000 (17% margin)
- Profile: 75% of revenue is contracted PPM on 3-year, index-linked agreements. The remaining 25% is high-margin remedial work generated directly from the PPM visits. The business runs on Joblogic, proving 96% SLA compliance. A general manager runs day-to-day operations.
- Valuation: The highly predictable, compliant revenue and clean operations push the multiple to the absolute top of the band.
- Enterprise Value: £600,000 × 6.0x = £3,600,000
Despite generating £500,000 less in revenue, Example B is worth £900,000 more.
Find out what your maintenance business is worth with our confidential valuation calculator.
2025 and 2026 Transactions: United Kingdom
| Date |
Target |
Acquirer |
Type |
Consideration |
Source |
| Jul 2026 |
Mitie Group plc |
OCS Group (CD&R) |
FM & Infrastructure |
£3.1bn (221.6p/share) |
Reuters |
| Jul 2026 |
Bradford Lifts Ltd |
The Pace Group |
Lift Maintenance |
Undisclosed |
LDC |
| Jul 2026 |
Atlas Lifts & Services |
The Pace Group |
Lift Maintenance |
Undisclosed |
LDC |
| Jul 2026 |
Sweetbriar Limited |
Complii |
Water Hygiene |
Undisclosed |
Complii |
| Jun 2026 |
Smart Managed Solutions |
Investcorp |
FM & HVAC |
>$200m (Majority) |
Private Equity Wire |
| Apr 2026 |
Academy Lifts |
Lift Maintenance Solutions |
Lift Maintenance |
Undisclosed |
LinkedIn |
| Jan 2026 |
IWS Water Hygiene |
andwis Group |
Water Hygiene |
Undisclosed |
Water Magazine |
| Jan 2026 |
Partnership Fire and Security |
Ranger Fire |
Fire Systems |
Undisclosed |
Facilitate |
| Dec 2025 |
Guardian Fire Services |
Investcorp |
Fire Systems |
Undisclosed |
Investcorp |
| Nov 2025 |
The Lift Company & DJ Lifts |
The Pace Group |
Lift Maintenance |
Undisclosed |
South East Business |
| Nov 2025 |
Bonarius (Netherlands) |
Sureserve |
Technical Maintenance |
Undisclosed |
Construction Wave |
| Aug 2025 |
CLP Group FS |
Sureserve |
Electrical & Building |
Undisclosed |
Tracxn |
| Jul 2025 |
Kinovo plc |
Sureserve |
Compliance & Sustainability |
£56.4m |
PA Media |
| Jun 2025 |
UK Safety Management (UKSM) |
PTSG |
Electrical Compliance |
Undisclosed |
Business Sale |
| May 2025 |
HI Group |
Sureserve |
Net Zero Strategy |
Undisclosed |
Sureserve |
2025 and 2026 Transactions: United States
| Date |
Target |
Acquirer |
Type |
Consideration |
Source |
| Jun 2026 |
Onyx-Fire Protection Services |
APi Group |
Fire Sprinkler |
Undisclosed |
BusinessWire |
| Jun 2025 |
White Stone Fleet Service |
Roebling Capital Partners |
Fleet Maintenance |
Undisclosed |
Roebling Capital |
| Feb 2026 |
Apex Service Partners |
Centre Partners (sale) |
HVAC Maintenance |
~$2.5bn |
The Hardwire News |
| Dec 2025 |
Service Logic |
Bain Capital / Mubadala |
Commercial HVAC |
Undisclosed |
Bain Capital |
| Dec 2025 |
WGNSTAR |
ABM Industries |
Technical Services |
~$275m |
ABM |
| Aug 2025 |
Rogers Building Solutions |
Aterian / Craft Work Capital |
Building Solutions |
Undisclosed |
Aterian |
| Feb 2025 |
S&K Building Services |
RF Investment Partners |
Building Maintenance |
Undisclosed |
PE Professional |
| Jan 2025 |
Miller Electric Company |
EMCOR Group |
Building Automation |
Undisclosed |
EMCOR |
| Jan 2025 |
Amerit Fleet Solutions |
New Mountain Capital |
Fleet Maintenance |
Undisclosed |
Amerit |
The Buyer Universe: Who is Acquiring in 2026
The maintenance sector is undergoing rapid consolidation, driven heavily by private equity buy-and-build strategies.
United Kingdom
- Sureserve: Backed by Cap10 Partners following a £214m take-private in 2023. Highly active, acquiring Kinovo for £56.4m in 2025.
- The Pace Group: LDC-backed lift maintenance specialist. Completed 17 acquisitions in under two years.
- Complii: Aggressive acquirer across water hygiene (Sweetbriar), fire security, and lifts.
- PTSG: Backed by Warburg Pincus and Macquarie Capital. Acquired UKSM to bolster electrical compliance.
- Ranger Fire: Ansor-backed fire systems consolidator.
- Investcorp: Acquired Guardian Fire Services and took a majority stake in Smart Managed Solutions (>$200m).
- andwis Group: Acquired IWS Water Hygiene in early 2026.
United States
- Bain Capital: Acquired Service Logic, the largest privately held commercial HVAC platform in North America.
- ABM Industries: Listed FM giant; acquired WGNSTAR for ~$275m.
- EMCOR Group: Highly acquisitive strategic buyer, completing five deals in the first nine months of 2025 alone.
- Rentokil Initial: Global pest control leader; completed 30 acquisitions in 2025.
- Amerit Fleet Solutions: Backed by New Mountain Capital to consolidate fleet maintenance.
See if your business matches the current search criteria of our active buyer network.
Demand Drivers and Regulatory Calendar
Acquirers pay a premium for maintenance businesses because the revenue is mandated by law, not dictated by economic cycles.
- Building Safety Act 2022: Imposes severe new obligations on Responsible Persons of high-rise residential buildings. New regulations came into force on 1 July 2026, driving demand for fire risk assessments and compliance data (the "golden thread").
- SFG20: The definitive UK industry standard for building maintenance specification. Compliance with SFG20 is increasingly demanded by tier-one FM aggregators.
- ACoP L8: The HSE Approved Code of Practice for the control of legionella bacteria. A strict statutory obligation driving recurring water hygiene contracts.
- LOLER 1998: Mandates thorough examination of lifting equipment every six months, creating an impenetrable moat for lift maintenance firms.
- BS 5839-1: Requires six-monthly servicing of commercial fire detection and alarm systems.
- F-Gas Regulations & TM44: Mandates refrigerant leak checks and air conditioning energy assessments, driving HVAC PPM.
Deal Structure: How the Consideration is Paid
In 2026, a £5M enterprise value rarely means £5M in cash on completion day. Buyers structure deals to mitigate risk and ensure a smooth handover.
- Cash at Completion: Typically 70% to 85% for maintenance businesses, reflecting the lower risk of contracted revenue.
- Deferred Consideration / Earn-Outs: 15% to 30%, usually tied to the retention of key contracts or hitting EBITDA targets over 12 to 24 months. If customer concentration is high, expect a larger, strictly performance-tied earn-out.
- Working Capital: Deals are done on a "cash-free, debt-free" basis, assuming a normal level of working capital is left in the business. Because maintenance contracts are often billed in advance, negative working capital dynamics must be carefully negotiated.
- Rollover Equity: If selling to a private equity platform, founders are often encouraged (or required) to reinvest 10% to 20% of their proceeds into the acquiring vehicle, aligning incentives for the next exit event.
Public Company Multiples
The following data represents large-cap, publicly traded corporations. These figures are provided as macroeconomic sentiment markers only. There is no direct read-across from these multiples to the valuation of private, lower mid-market businesses.
- Rentokil Initial plc (RTO.L): Traded at an EV/EBITDA multiple of ~12.87x (FY2025). Net Debt to Adjusted EBITDA stood at 2.6x in December 2025.
- Mitie Group plc (MTO.L): Acquired by OCS Group in July 2026 for £3.1bn, representing a 46.8% premium to its closing share price. Implied multiples for large-cap FM deals of this scale typically range from 14.0x to 16.0x.
(Data retrieved: August 2026)
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Regulatory Economics: The Cost and Value of Compliance
Accreditations and statutory registrations are not a compliance tax to be minimised. They are the entry ticket to the contracts buyers pay the most for, and the specific accreditations a target holds (or lacks) materially move the multiple. This section sets out what each credential costs to obtain and maintain, and why acquirers underwrite them as part of the earnings quality assessment.
SFG20: the industry benchmark for PPM scheduling
SFG20, the Standard for Good Maintenance published by BSRIA, is the industry-standard reference for maintenance schedules across HVAC, electrical, plumbing, fire, lifts, and building fabric, covering more than 1,000 individual maintenance tasks. An annual licence costs between £500 and £3,000 depending on company size and the modules subscribed to.
The valuation impact is direct. A business that maintains its PPM schedules against SFG20 (or an equivalent documented standard) demonstrates best-practice compliance that a buyer's technical due diligence team can verify in minutes. A business running informal or experience-based schedules forces the buyer to underwrite the risk that maintenance intervals are wrong, undocumented, or simply whatever the founder remembers from the last visit. One of the first questions a buyer's adviser will ask is whether the target uses SFG20 or equivalent, and if not, what the basis for its PPM frequencies actually is.
F-Gas Regulation: the HVAC and refrigeration gatekeeper
Any maintenance work involving refrigerants, including air conditioning, chillers, and heat pumps, is governed by the F-Gas Regulation. Company-level F-Gas certification costs £500 to £1,000 per year, and each individual technician requires a City & Guilds 2079 qualification costing £300 to £600 per person. A business without F-Gas certification cannot legally maintain an estimated 40% of building services plant, which caps its addressable market and, by extension, the multiple a buyer is prepared to pay for its growth potential. This is a core consideration for any HVAC-focused maintenance business.
Gas Safe Registration: mandatory for heating maintenance
Any gas work, including boiler servicing and gas-fired heating maintenance, requires Gas Safe registration. The annual fee is £445 for a sole trader and £166 per additional operative. Without Gas Safe registration the business simply cannot maintain gas heating systems, which significantly narrows its addressable market in a sector where heating PPM is a core recurring revenue line.
NICEIC and ECA registration: electrical self-certification
NICEIC registration costs £800 to £2,500 per year depending on the scheme, and ECA membership is turnover-based, typically £1,000 to £5,000 annually. These registrations allow self-certification of electrical work under Part P and BS 7671. Unregistered businesses must engage third-party certification for every electrical job, adding cost and delay that erodes margin and slows contract mobilisation. This matters directly for electrical maintenance contractors.
SafeContractor, CHAS, Constructionline, and Achilles
These contractor accreditation schemes cost £200 to £1,500 per year each depending on company size, and are required for access to most commercial, NHS, and public sector sites. A buyer's adviser will always ask which accreditations the target holds and which specific client contracts mandate them, because losing an accreditation can mean losing the contract that depends on it.
ISO 9001, ISO 14001, and ISO 45001
Initial certification for each ISO standard costs £5,000 to £15,000, with £2,000 to £5,000 in annual surveillance costs thereafter. These standards are increasingly required in FM tenders, and triple-ISO certification (covering quality, environmental, and health and safety management) commands a premium in competitive bidding. Certified businesses are also easier to integrate into private equity platforms that already hold ISO certification across their portfolio, which is a meaningful driver of buyer appetite at the bolt-on stage.
Benchmarking against the listed peer ceiling
The table below summarises the accreditation landscape and its approximate cost of entry.
| Accreditation |
Annual cost |
Required for |
Valuation impact if absent |
| SFG20 licence |
£500-£3,000 |
Documented PPM scheduling |
Buyers assume informal, unauditable maintenance intervals |
| F-Gas (company + technician) |
£500-£1,000 + £300-£600 per technician |
Refrigerant-related HVAC work |
Cannot service c.40% of building services plant |
| Gas Safe |
£445 sole trader, £166 per operative |
Gas heating maintenance |
Cannot maintain gas heating systems at all |
| NICEIC / ECA |
£800-£5,000 |
Electrical self-certification |
Third-party certification required for every job |
| SafeContractor / CHAS / Constructionline / Achilles |
£200-£1,500 each |
Commercial, NHS, and public sector site access |
Excluded from most institutional tender lists |
| ISO 9001 / 14001 / 45001 |
£5,000-£15,000 initial, £2,000-£5,000 annual |
FM tender qualification |
Weaker position in competitive bids, harder PE integration |
Why regulatory investment pays for itself at exit
Owners sometimes view accreditation renewals as a cost centre to be minimised in the run-up to a sale. The opposite is true. A lapsed Gas Safe registration, an expired ISO surveillance audit, or a missed SafeContractor renewal during the diligence window can stall or kill a process at the worst possible moment, because the buyer's technical adviser will flag it as an unresolved risk rather than a minor administrative lapse. Maintaining every accreditation with 12 or more months of runway remaining, as set out in the 12-month preparation timeline below, removes this risk entirely and signals to the buyer that the business is genuinely exit-ready rather than merely trading.
According to the Lincoln International Facilities Services Index, listed facilities services companies traded at 15.6x EV/EBITDA in Q1 2026. That figure is the ceiling, not a benchmark for private SME transactions: private maintenance businesses trade at a significant discount to their listed peers. For a private equity buyer, that gap is the arbitrage. A £1M EBITDA private maintenance business acquired at 6.0x to 8.0x and eventually exited or rolled into a listed-adjacent platform represents a substantial re-rating opportunity, which is precisely why compliance-heavy maintenance niches attract such intense buy-and-build activity. Owners preparing for exit should read this alongside the sub-niche attractiveness matrix above, since regulatory tailwind is one of the thirty factors buyers price directly.
The Diligence Question Bank: 25 Questions Buyers Will Ask
Every maintenance business sale process converges on the same underlying question: is this recurring revenue real, contracted, and transferable? The 25 questions below are drawn from the categories a buyer's financial, operational, commercial, regulatory, and legal advisers will work through during due diligence. Preparing clear, evidenced answers before a process begins is one of the highest-leverage steps an owner can take, and mirrors the preparation steps set out in the 12-month timeline below.
Financial
- Provide a contract-by-contract schedule showing client name, site(s), annual value, contract start date, term, renewal date, notice period, price escalation mechanism (CPI, RPI, or fixed), and services included.
- What percentage of revenue is recurring PPM contract revenue versus reactive or callout work versus project or installation work? Provide a three-year trend.
- What is the gross margin by revenue type, covering PPM contracts, reactive callouts, quoted remedial works, and capital projects? How do margins differ by trade discipline?
- What is the average contract value and how has it changed over three years? Is the business winning larger contracts or simply more small ones?
- Provide a revenue bridge showing opening contract book value, new wins, price increases, scope changes, losses, and closing contract book value for each of the last three years.
Operational
- List all engineers and technicians by name, trade discipline, qualifications, and which contracts they primarily service. What is the ratio of directly employed to subcontracted labour?
- What CAFM or CMMS system is used for scheduling PPM visits, logging reactive calls, and generating compliance reports? Provide sample client reports.
- What is the PPM completion rate, meaning scheduled visits completed on time versus overdue? The industry benchmark is 95% or higher. Provide the last 12 months of data.
- What is the first-time fix rate for reactive callouts, and what percentage require a return visit for parts or specialist skills?
- What is the average engineer utilisation rate, calculated as billable hours divided by available hours? The industry benchmark is 75% to 85%.
Commercial
- List the top 20 clients by revenue. For each, is the client the building owner, managing agent, FM company, or tenant? What is the contract chain and who is the actual decision-maker?
- What is the contract renewal rate for the last three years? List every contract lost, the reason, and whether it was re-tendered, taken in-house, or moved to a competitor.
- What is the current tender pipeline? List all active bids with estimated value and probability of win.
- Do any contracts contain penalty clauses covering SLA failures, KPI breaches, or liquidated damages? Have any penalties been applied in the last three years?
- What is the customer acquisition cost and the average time from initial contact to signed contract?
Regulatory
- List all trade registrations and accreditations, including Gas Safe, NICEIC or ECA, F-Gas, BESA, SafeContractor, CHAS, Constructionline, Achilles, and ISO certifications. Provide certificate numbers and expiry dates.
- Has the business ever failed a SafeContractor, CHAS, or ISO audit? Provide details of any non-conformances and the corrective actions taken.
- Has there been any HSE investigation, Improvement Notice, or Prohibition Notice in the last five years? Any RIDDOR-reportable incidents?
- Are all engineer qualifications current? Provide a matrix of engineer name, Gas Safe ID, F-Gas certificate number, electrical qualification, other relevant certificates, and expiry dates.
- What SFG20 or equivalent maintenance schedules are used? Are they documented and auditable, or informal and experience-based?
Legal and strategic
- Provide all standard contract terms and conditions. Are there any contracts with unlimited liability, performance bonds, or parent company guarantees?
- Are there any contracts with change-of-control clauses that could trigger termination or re-tender on sale of the business?
- What is the fleet composition, including number of vehicles, owned versus leased, average age, and annual replacement cost?
- Provide details of any pending or threatened litigation, disputes with clients, or unresolved insurance claims.
- What is the succession plan? If the owner left tomorrow, who would manage client relationships, win new business, and handle operational decisions?
Owners who can answer all 25 of these questions with documented evidence, rather than verbal reassurance, materially shorten the diligence period and reduce the risk of a price chip late in the process. For a structured view of what buyers are actively looking for in this sector, see the buyer universe section above or check current buyer search criteria.
The 12-Month Preparation Timeline
Preparation compounds. An owner who begins addressing the diligence questions above 12 months before going to market will present a materially stronger contract book, cleaner data, and a less owner-dependent operation than one who starts the process cold. The timeline below sets out what to prioritise in each phase.
Months 12 to 10: contract foundation
- Audit every maintenance contract and ensure all are in writing with clear terms, renewal dates, and notice periods, rather than handshake arrangements.
- Convert any month-to-month contracts to 12 to 24-month fixed terms with auto-renewal and a 90-day notice period.
- Proactively renew any contracts expiring in the next 18 months. Buyers are wary of contracts that expire during an earn-out period.
- Ensure all trade registrations, including Gas Safe, NICEIC, F-Gas, SafeContractor, and CHAS, are current with 12 or more months remaining.
- Implement SFG20 or otherwise formally document PPM schedules if this has not already been done.
Months 9 to 7: revenue quality
- Increase recurring PPM revenue as a percentage of total turnover, targeting 70% or higher, to reduce dependency on reactive or project work.
- Win at least two to three new contracts to demonstrate a growth trajectory. Buyers pay a premium for a growing contract book, not a static one.
- Reduce customer concentration. If the top client exceeds 20% of revenue, win enough new contracts to dilute that concentration.
- Implement or upgrade a CAFM or CMMS system, generating at least six months of clean digital data on PPM completion rates, response times, and client reporting.
- Begin tracking the KPIs buyers will request: PPM completion rate, first-time fix rate, engineer utilisation, and contract renewal rate.
Months 6 to 5: operational independence
- Reduce owner involvement in day-to-day client management and engineer scheduling.
- Appoint or formalise an operations or service manager who owns the delivery relationship with key clients.
- Ensure the business can win new contracts without the owner, and document the business development and tender process.
- Cross-train engineers across multiple disciplines where possible. Multi-skilled teams command a higher valuation than single-trade crews.
- Document all processes, including callout handling, PPM scheduling, quality checks, subcontractor management, and client reporting.
Months 4 to 3: financial preparation
- Engage an accountant to prepare normalised management accounts.
- Calculate defended EBITDA by separating owner salary and perks from sustainable, ongoing profit.
- Prepare a contract book valuation covering total annual contract value, weighted average remaining term, and renewal probability.
- Identify and quantify any contract risks, including expiring contracts, underperforming KPIs, and client financial distress.
Months 2 to 1: market readiness
- Prepare a Confidential Information Memorandum or engage a specialist adviser to do so.
- Brief key staff on retention. Buyers will want the operations manager and senior engineers tied in through the transaction.
- Ensure all accreditations have 12 or more months remaining before expiry.
- Assemble the data room: accounts, the full contract schedule, the engineer qualification matrix, CAFM or CMMS export, insurance documentation, the fleet schedule, the tender pipeline, and client satisfaction data.
Owners further than 12 months from a sale event, or unsure where to start, can request a confidential valuation and business optimisation review to identify the highest-leverage steps for their specific contract mix. This is also a natural moment to consider exit planning more broadly, since preparation for sale and preparation for a strong operating business are, in this sector, almost always the same exercise.
FAQ
What is a good EBITDA multiple for a maintenance business in 2026?
For a business generating £1M to £2M in EBITDA, a multiple of 6.0x to 7.5x is standard, provided the revenue is heavily contracted (>70% PPM) and managed via a modern CAFM system. Smaller operations (£250K–£500K EBITDA) typically trade at 3.5x to 4.5x.
Why do maintenance businesses sell for more than installation businesses?
Predictability. Installation and project work require constant sales effort to replace revenue. Maintenance contracts provide guaranteed, recurring cash flow, often mandated by statutory compliance laws, making them significantly less risky for an acquirer.
How does customer concentration affect the valuation?
Severely. If a single client accounts for more than 20% of your revenue, buyers view that as a critical risk. The multiple will be discounted, or the buyer will structure a significant portion of the deal as an earn-out contingent on that client renewing.
Do I need a CAFM system to sell my business?
While not legally required, operating without a tier-one CAFM system (like Joblogic or Simpro) will hurt your valuation. Buyers need hard data on SLA compliance, first-time fix rates, and engineer utilisation during due diligence. Spreadsheets cannot provide this securely.
What is SFG20 and why does it matter to buyers?
SFG20, published by BSRIA, is the industry-standard maintenance schedule covering HVAC, electrical, plumbing, fire, lifts, and building fabric. Businesses that maintain documented PPM schedules against SFG20 or an equivalent standard demonstrate best-practice compliance that buyers can verify quickly during due diligence, whereas informal or undocumented schedules raise red flags.
What accreditations should a maintenance business hold before going to market?
At minimum, relevant trade registrations such as Gas Safe, NICEIC or ECA, and F-Gas certification where refrigerants are involved, plus contractor accreditations such as SafeContractor, CHAS, Constructionline, or Achilles depending on the client base. ISO 9001, 14001, and 45001 certification is increasingly expected in competitive FM tenders and supports a stronger multiple.
How far in advance should I start preparing for a sale?
Twelve months is the recommended minimum. This allows time to convert informal arrangements into formal contracts, improve the proportion of recurring PPM revenue, implement or upgrade a CAFM system, and reduce owner dependency before a buyer's advisers begin due diligence.
What is the difference between PPM revenue and reactive revenue in a valuation context?
PPM revenue is scheduled, contracted, and predictable, so buyers treat it as high-quality, recurring earnings. Reactive revenue depends on equipment failure and is inherently unpredictable, so buyers discount it heavily relative to PPM revenue when assessing the quality of earnings.
Glossary
| Term |
Definition |
| PPM |
Planned Preventive Maintenance: scheduled maintenance visits at predetermined intervals to prevent equipment failure. |
| Reactive maintenance |
Unplanned callout to fix a breakdown or fault, typically charged at premium rates. |
| CAFM |
Computer-Aided Facilities Management: software for managing maintenance schedules, assets, and compliance. |
| CMMS |
Computerised Maintenance Management System: used interchangeably with CAFM in the maintenance sector. |
| SFG20 |
Standard for Good Maintenance: BSRIA-published maintenance schedules covering all building services disciplines. |
| First-time fix rate |
Percentage of reactive callouts resolved on the first visit without requiring a return trip for parts or specialist skills. |
| Engineer utilisation |
Billable hours as a percentage of available working hours. The industry benchmark is 75% to 85%. |
| Contract book |
The total portfolio of active maintenance contracts, and the primary asset being acquired in maintenance M&A. |
| Mobilisation |
The process of setting up a new maintenance contract: deploying engineers, loading assets into a CAFM system, and conducting initial surveys. |
| Demobilisation |
The process of handing back a contract at end of term: returning keys, transferring data, and final reporting. |
| TFM |
Total Facilities Management: a single-supplier model covering all building services, typically larger contracts at lower margins. |
| Hard FM |
Mechanical, electrical, and plumbing maintenance: the technical and engineering disciplines. |
| Soft FM |
Cleaning, security, catering, and waste management: the non-technical facilities services. |
| Lifecycle costing |
Calculating the total cost of maintaining an asset over its useful life, used in tender evaluations. |
| Condition survey |
Assessment of building services plant condition, used to identify maintenance backlog and capital replacement needs. |
| RIDDOR |
Reporting of Injuries, Diseases and Dangerous Occurrences Regulations: mandatory incident reporting to the HSE. |
Methodology and Sources
This guide was compiled using Tier 0 and Tier 1 data sources, including official corporate filings, press releases from acquiring entities, and sector reports from leading M&A data providers.
- Moore Kingston Smith: Facilities Management and Property Services M&A Insight Report 2025.
- Lincoln International: Facilities Services Market Update Q2 & Q3 2025.
- Published HVAC services M&A market update, July 2025.
- Reuters / Bloomberg: Deal reporting for the OCS/Mitie acquisition (July 2026).
- Official Press Releases: Bain Capital, LDC, Investcorp, Sureserve, Complii, ABM Industries.
Where DealFlowAgent's own proprietary data is used, it is explicitly labelled as a DealFlowAgent estimate. All transactions listed occurred in 2025 or 2026.
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About DealFlowAgent
DealFlowAgent is a specialist sell-side M&A advisory firm representing owner-led businesses in the building services, facilities management, and healthcare sectors. We protect the legacies of founders by running highly competitive, discreet sale processes targeting our active network of pre-qualified acquirers.
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