If you manage a commercial property, an office building, a school, a care home or a social housing block, you will have heard the term Planned Preventative Maintenance — or PPM. But what does a PPM contract actually include, how is it structured, and how do you know whether your property genuinely needs one or whether you are paying for something you could manage reactively?
This guide answers those questions in plain terms, based on what we see working — and not working — across the commercial and social housing properties we maintain across London.
What Is Planned Preventative Maintenance?
Planned Preventative Maintenance is exactly what the name suggests: maintenance that is planned in advance and carried out before a problem occurs, rather than in response to one.
In the context of a commercial building, a PPM contract is a formal agreement between a property manager or building owner and a maintenance contractor. It defines which systems will be inspected and serviced, how often, and what the contractor will do at each visit. The programme is scheduled across the year, often on a quarterly, six-monthly or annual basis depending on the system type and manufacturer requirements.
The opposite of PPM is reactive maintenance — calling a contractor when something breaks. Most commercial properties need both, but the balance between the two is where PPM earns its value.
What Does a PPM Contract Typically Cover?
The scope of a PPM contract depends entirely on what systems your building contains and what your compliance obligations require. For a typical commercial property in London, a PPM programme will cover some or all of the following:
- Heating and hot water systems Commercial boilers, plant rooms, heat exchangers, pressurisation units, expansion vessels, motorised valves and associated controls. Servicing schedules are typically set by the manufacturer — most commercial boilers require at least an annual service, and many require quarterly inspection of controls and safety devices.
- Air conditioning and ventilation HVAC systems, fan coil units, air handling units, split systems and ventilation ductwork. F-Gas regulations require records of any refrigerant top-ups and leak checks at defined intervals based on the system’s refrigerant charge. These are compliance obligations, not optional maintenance.
- Air conditioning and ventilation HVAC systems, fan coil units, air handling units, split systems and ventilation ductwork. F-Gas regulations require records of any refrigerant top-ups and leak checks at defined intervals based on the system’s refrigerant charge. These are compliance obligations, not optional maintenance.
- Mechanical plant Pumps, motors, pipework systems, expansion vessels and pressure relief valves. These are the components most likely to fail without warning — and the most likely to cause significant disruption when they do.
- Mechanical plant Pumps, motors, pipework systems, expansion vessels and pressure relief valves. These are the components most likely to fail without warning — and the most likely to cause significant disruption when they do.
- Water systems Legionella risk management and water hygiene compliance, including temperature monitoring, showerhead descaling and water treatment records. Under the Health and Safety at Work Act and associated ACoP L8, employers and building managers have a legal duty to manage legionella risk — a PPM contract is the most common way of demonstrating compliance.
What a PPM Contract Is Not
A PPM contract is not a guarantee that nothing will break. It is a programme designed to reduce the likelihood and frequency of breakdowns, catch early-stage faults before they become failures, and maintain the evidence of compliance that your insurer, landlord, housing association or local authority may require.
A PPM contract is not a guarantee that nothing will break. It is a programme designed to reduce the likelihood and frequency of breakdowns, catch early-stage faults before they become failures, and maintain the evidence of compliance that your insurer, landlord, housing association or local authority may require.
The Commercial Case for PPM
There are three distinct reasons why a commercial property manager should consider a PPM contract. They are not equally weighted — the right reason depends on your property type.
- Cost predictability The most cited reason for PPM is that it converts unpredictable capital expenditure — emergency repairs, unplanned shutdowns, emergency boiler hire — into predictable operational expenditure. A commercial boiler failure in January can cost several times more to repair on an emergency basis than the annual cost of a servicing contract. For budget-holders managing property portfolios, predictable costs are worth a premium.
- Compliance and risk management For social housing providers, schools, care homes, hotels and any property with a duty of care to occupants, PPM is not optional — it is the mechanism through which compliance with gas safety, electrical safety, F-Gas, legionella and fire safety regulations is maintained and evidenced. The Regulator of Social Housing, Ofsted, the Care Quality Commission and local authority environmental health teams all expect documented maintenance records as a baseline. A PPM contract with a competent contractor produces those records automatically.
- Asset lifespan Commercial plant rooms represent significant capital investment. A commercial boiler that is properly serviced and maintained on a PPM programme will typically last 15 to 20 years. The same boiler, reactive-maintained, may last 8 to 12 years before requiring replacement. Across a portfolio of properties, the difference in capital expenditure over a decade is substantial.
When PPM Is Particularly Important
Not every commercial property needs a comprehensive multi-trade PPM contract. A small single-tenanted office with a straightforward combi boiler can often be managed with an annual service and reactive callout cover. But PPM becomes essential when:
- The building is occupied continuously or has no shutdown window. Schools, care homes, social housing blocks and hotels cannot simply close while a boiler is repaired. Emergency failures in these settings cause immediate harm to occupants and immediate legal exposure for managers. A PPM programme reduces the probability of failure during occupation and — critically — provides documented evidence that all reasonable steps were taken.
- You manage a portfolio of multiple properties. Managing maintenance reactively across 10, 20 or 50 properties is operationally chaotic. A PPM contract with a single multi-trade contractor consolidates scheduling, reporting and accountability into one managed programme.
- Your building contains complex or high-value plant. Large commercial boilers, central plant rooms, chiller systems and BMS-integrated HVAC all require specialist servicing at defined intervals. These are not systems where reactive maintenance is a sensible strategy.
- You have regulatory compliance obligations. If your gas safety certificate, EICR, F-Gas log or legionella risk assessment lapses, you are non-compliant — regardless of whether anything has gone wrong. PPM programmes are built around these compliance cycles so that nothing is missed.
- Awaab’s Law applies to your properties. For social housing providers, Awaab’s Law Phase 2 — coming into force in 2026 — imposes strict 24-hour response requirements for heating failures, gas safety issues and electrical hazards in occupied properties. A PPM programme significantly reduces the likelihood of emergency events and demonstrates the proactive maintenance approach that the Regulator of Social Housing now expects.
What to Look for in a PPM Contract
Not all PPM contracts are equal. When evaluating a PPM provider for your commercial property or portfolio, the following are the non-negotiables:
- Multi-trade capability. A PPM contract that covers heating but not electrical, or heating and electrical but not HVAC, creates gaps in your compliance programme and requires you to manage multiple contractors. A single multi-trade contractor with Gas Safe, NICEIC and F-Gas certification under one contract is significantly easier to manage.
- Digital reporting on every visit. You need a written record of every PPM visit — what was inspected, what was found, what was done, and what recommendations were made. This is the audit trail that protects you in the event of a regulatory inspection, insurance claim or legal challenge. If your contractor cannot provide this, find one who can.
- Emergency response SLA built into the contract. A PPM contract without an emergency response commitment is only half a maintenance programme. You need to know that if a system fails between scheduled visits, your PPM contractor will attend within a defined timeframe — not that you need to find someone new and explain your whole building from scratch.
- Clear scope definition upfront. The maintenance scope — every system, every component, every inspection interval — should be defined in writing before the contract starts. Vague scope leads to disputes about what is and is not included, which undermines the cost predictability that PPM is supposed to deliver.
- Engineer continuity. A PPM programme works best when the same engineers visit the same buildings regularly. They develop familiarity with the plant, notice changes in performance and catch early-stage faults that a first-time visitor would miss. Ask prospective contractors about their approach to engineer continuity.
How VHL Approaches PPM
VHL Mechanical delivers planned preventative maintenance contracts across commercial properties, social housing, education and healthcare estates across London. Our PPM programmes are built around multi-trade coverage — Gas Safe heating and gas safety, NICEIC electrical, F-Gas HVAC and water hygiene — under a single contract with a single account manager and a single set of compliance records.
Every PPM visit produces a digital job report issued on completion. Every compliance certificate — CP12, EICR, F-Gas log — is issued digitally on the day of inspection. Our emergency response SLA is built into every PPM contract as standard, not as an optional extra.
We currently hold PPM contracts with Hillingdon Council, educational facilities managers across northwest London and a range of commercial landlords and managing agents across the capital.
Summary: Do You Need a PPM Contract?
You probably need a PPM contract if any of the following apply:
- Your building is continuously occupied with no shutdown window
- You manage three or more commercial or residential properties
- Your building contains a commercial boiler, plant room, HVAC system or other complex plant
- You have regulatory compliance obligations under gas safety, electrical safety, F-Gas or legionella legislation
- You manage social housing and are subject to Awaab’s Law
- Your reactive maintenance spend is unpredictable and difficult to budget for
You can probably manage reactively if your building is simple, single-tenanted, has straightforward systems and your compliance obligations are limited to an annual boiler service and occasional EICR.
If you are unsure, the right starting point is a site survey. A competent PPM contractor should be able to assess your building, identify your compliance obligations and give you a clear picture of what a PPM programme would cover, how often visits would be required and what it would cost — before you commit to anything.
Talk to VHL About a PPM Programme for Your Building
VHL Mechanical provides planned preventative maintenance contracts across commercial properties, schools, care homes, social housing and mixed-use estates across London.
VHL Mechanical provides planned preventative maintenance contracts across commercial properties, schools, care homes, social housing and mixed-use estates across London.
If you are responsible for maintaining a commercial property or portfolio and want to understand what a PPM contract would look like for your buildings, Call us on 0208 102 9898.
We will carry out a free site survey, identify your compliance obligations and provide a clear, fixed-price PPM proposal — with no obligation to proceed.
About the author
Malika Khan is Head of Business Strategy, Commercial Systems & Technology at VHL Mechanical, where she leads the commercial systems and compliance technology programme across heating, gas safety, and mechanical maintenance contracts for social housing, local authorities, and commercial estates across London. She works directly with housing associations, ALMOs, facilities managers, and procurement teams on the operational systems that underpin Awaab’s Law readiness, CP12 compliance, and SLA-backed delivery.
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VHL Mechanical is a Gas Safe registered, NICEIC-approved, ISO 9001 certified contractor based in Harrow, serving commercial, social housing and residential clients across Greater London.
