Commercial buildings carry obligations that residential properties do not. Statutory compliance, tenant obligations, health and safety legislation, and insurance requirements all create a maintenance framework that property managers and building owners must navigate. Missing a statutory inspection or allowing a building system to deteriorate below a safe standard creates legal exposure, not just a repair bill.
This checklist covers the full scope of commercial building maintenance — from monthly tasks that any facilities manager can carry out, to annual statutory inspections that require qualified contractors. It is structured by frequency and system type, so it can be used as the basis for a planned preventive maintenance (PPM) programme.
Monthly Checks
Monthly checks are largely visual and operational. They take 2–3 hours for a typical commercial unit and can be carried out by a facilities manager or building manager without specialist qualifications.
| System | Task | Who |
|---|---|---|
| Fire Safety | Test fire alarm call points (rotate zones) | FM / Contractor |
| Fire Safety | Test emergency lighting (visual check) | FM |
| Fire Safety | Inspect fire doors — self-closers, seals, signage | FM |
| Fire Safety | Check fire extinguisher pressure gauges | FM |
| Security | Test intruder alarm and access control systems | FM |
| Security | Check CCTV cameras for obstructions or faults | FM |
| Building Fabric | Visual inspection of roof drainage and gutters | FM |
| Building Fabric | Check external doors and windows for damage | FM |
| M&E | Check boiler pressure and pilot light (if applicable) | FM |
| M&E | Inspect visible pipework for leaks or corrosion | FM |
| M&E | Test emergency stop buttons on plant equipment | FM |
| Compliance | Check legionella flushing log is up to date | FM |
Quarterly Checks
Quarterly checks require more time and, in some cases, specialist contractors. They cover systems that change seasonally — HVAC, drainage, and external fabric — and compliance records that need regular updating.
| System | Task | Who |
|---|---|---|
| HVAC | Clean or replace air handling unit filters | Contractor |
| HVAC | Check cooling tower water treatment (if applicable) | Contractor |
| HVAC | Inspect ductwork for blockages or damage | Contractor |
| Drainage | Clear external gullies and inspection chambers | FM / Contractor |
| Drainage | Check flat roof drainage outlets for blockages | FM |
| Building Fabric | Inspect external cladding and pointing for deterioration | FM |
| Building Fabric | Check roof covering for lifted flashings or membrane damage | FM / Roofer |
| Electrical | Test RCDs and circuit breakers | Qualified Electrician |
| Plumbing | Flush infrequently used outlets (legionella control) | FM |
| Compliance | Review and update building log book | FM |
Annual Statutory Inspections
Statutory inspections are legally required and must be carried out by qualified contractors. Missing a statutory inspection creates legal liability, can invalidate your building insurance, and — in the case of gas and electrical systems — creates a direct safety risk to occupants.
Keep all statutory inspection certificates in the building log book and ensure they are available for inspection by the local authority, fire service, or HSE on request.
| Inspection | Legal Basis | Frequency | Approx. Cost |
|---|---|---|---|
| Gas safety inspection & certificate | Gas Safety Regulations 1998 | Annual | £80–£200 |
| Fixed electrical installation condition report (EICR) | BS 7671 / Electricity at Work Regs | Every 5 years | £300–£800 |
| Fire alarm system inspection | BS 5839-1 | Twice yearly | £150–£400 |
| Emergency lighting full discharge test | BS 5266-1 | Annual | £100–£250 |
| Lift thorough examination | LOLER 1998 | Every 6 months | £200–£500 |
| Pressure vessel inspection (if applicable) | PSSR 2000 | Every 2 years | £150–£400 |
| Legionella risk assessment | L8 ACoP (HSE) | Every 2 years | £300–£800 |
| Asbestos management review | CAR 2012 | Annual | £200–£500 |
| PAT testing (portable appliances) | Electricity at Work Regs | Annual (risk-based) | £100–£300 |
| Fire risk assessment | Regulatory Reform (Fire Safety) Order 2005 | Annual review | £300–£600 |
Building Fabric: What to Inspect and When
The building fabric — roof, walls, windows, and drainage — is the most visible maintenance area and the one most likely to generate reactive repair costs if neglected. A flat commercial roof has a typical lifespan of 15–25 years depending on the membrane type. An annual inspection by a qualified roofer will identify any areas of membrane deterioration, blocked outlets, or failed upstand details before they cause water ingress.
Masonry and cladding should be inspected every 3–5 years for pointing failure, cracking, or movement. Brick pointing in commercial buildings typically lasts 20–30 years before requiring repointing, but exposure, traffic vibration, and thermal movement can accelerate deterioration. Failed pointing allows water into the wall construction, leading to frost damage, efflorescence, and internal damp.
Drainage is the most frequently neglected fabric element. Blocked gutters and downpipes cause water to back up onto the roof or overflow onto the external walls. In a commercial building with a large flat roof, a single blocked outlet can result in significant ponding load — flat roofs are typically designed for 150mm of water depth, but a blocked outlet can allow water to accumulate well beyond that during heavy rainfall.
Planned vs Reactive Maintenance: The Cost Difference
The financial case for planned maintenance is straightforward. A blocked gutter cleared in autumn costs £80–£150. The same blocked gutter, left until it causes water ingress into the building, results in roof repairs (£500–£2,000), internal redecoration (£500–£1,500), and potential business interruption. The ratio of planned to reactive cost is typically 1:10 for fabric issues and 1:5 for M&E systems.
A PPM contract with a single contractor who knows your building reduces both cost and response time. Rather than sourcing a new contractor each time a reactive issue arises, a PPM contractor has the building history, the access arrangements, and the relationship with your team to respond quickly and efficiently.
TCM Building & Maintenance provides PPM contracts for commercial properties across Hertfordshire and North London. Contracts cover all trades — roofing, plumbing, electrical, decoration, and general building fabric — under a single point of contact with a dedicated account manager.
Frequently Asked Questions
How often should a commercial building be professionally inspected?
A comprehensive professional inspection should be carried out annually. This covers the fabric of the building, M&E systems, and fire safety systems. Statutory inspections — gas safety (annually), fixed electrical installation testing (every 5 years), lift inspections (every 6 months) — have their own legal frequencies that must be met regardless of the general inspection schedule.
What is a planned preventive maintenance (PPM) schedule?
A PPM schedule is a documented programme of maintenance tasks carried out at predetermined intervals to prevent equipment failure and building deterioration. A PPM schedule for a commercial building typically covers monthly, quarterly, six-monthly, and annual tasks across all building systems. TCM Building & Maintenance can prepare a PPM schedule tailored to your building and carry out all scheduled work under a single contract.
Who is responsible for building maintenance in a commercial lease?
Responsibility depends on the lease terms. In a full repairing and insuring (FRI) lease, the tenant is responsible for all maintenance and repair. In an internal repairing lease, the tenant maintains the interior only. In a service charge lease, the landlord maintains the building and recovers costs from tenants through a service charge. Always review the lease carefully — a schedule of condition at the start of the lease limits the tenant's repairing liability.
What statutory maintenance is legally required for commercial buildings?
Statutory requirements include: gas safety certificate annually; EICR every 5 years; fire alarm inspection twice yearly; emergency lighting annual discharge test; lift examination every 6 months; legionella risk assessment every 2 years; and asbestos management plan if the building was constructed before 2000. Failure to comply can result in prosecution, invalidated insurance, and prohibition notices.
How much does commercial building maintenance cost per year?
Planned maintenance costs for a well-maintained commercial building typically run at 1–2% of the building's replacement value per year. For a 500m² office building with a replacement value of £1.5 million, that equates to £15,000–£30,000 per year. A robust PPM programme reduces reactive spend by 30–50% over a five-year period.
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