If you let a commercial property in the North East, your lease mainly decides who pays for and arranges boiler maintenance, repair and replacement. It does not decide who is legally responsible for safety. Gas safety and health and safety law apply to whoever controls the plant, and a landlord who keeps control of a boiler, or who retains obligations under the lease, cannot hand the legal risk over to a tenant by drafting alone. This article explains where landlord commercial boiler responsibilities usually sit, what the law expects, how service charges and repairs work, and which records protect you if something goes wrong. It is general guidance, not legal advice.
Residential tenancies come with statutory repairing duties that a landlord cannot avoid. Commercial lets are different: they are largely governed by contract. Three parts of the lease do most of the work. The repairing covenant says who must keep the premises and their fixtures in repair. The service charge clause says which costs a landlord may recover from tenants. Any plant and equipment schedule or definition of "plant" clarifies whether the boiler is part of the demise (the tenant's space) or part of the building services the landlord retains.
In practice, three set-ups cover most North East lets:
Statute sits above all of these. The Health and Safety at Work Act 1974 and the Gas Safety (Installation and Use) Regulations 1998 apply whatever the lease says, and a lease cannot contract out of them. A clause making the tenant "responsible for the boiler" may settle who pays an invoice. It does not remove the landlord's duties where the landlord retains control, nor excuse a landlord who knows of a hazard in a shared plant room.
Read the lease first, then test it against the law. If the two seem to pull in different directions, the safety duty wins and the cost question is worked out afterwards.
The 1998 Regulations impose duties on several parties: installers, employers, the self-employed, and those with responsibility for premises or appliances. Regulation 36 deals with landlords' duties, including maintaining gas appliances and flues and the annual safety check. It is most clearly framed around residential lets, and the familiar landlord gas safety record (often called a CP12) is a residential concept. Do not assume it applies to a commercial let in the same way. Check the current Regulations and HSE guidance on gas safety in commercial premises, as of 2026, or ask a Gas Safe registered engineer or solicitor to confirm how it applies to your property.
The wider point matters more for commercial landlords. Duties under the Regulations and the 1974 Act tend to follow control, not ownership. The duty holder is whoever has control of the premises or the plant: the landlord, the tenant, or a managing agent acting for the landlord. In a single-let FRI building, that is often the tenant. In a multi-let block with a shared plant room, it is usually the landlord or their agent. Where control is split, for example a landlord-owned boiler with tenant-controlled distribution, both parties may carry duties and should agree who does what in writing.
All gas work, including installation, servicing, repair and flue work, must be carried out by a Gas Safe registered engineer. Never ask staff, tenants or general maintenance contractors to attempt any of it. You can verify an engineer's registration, and the types of gas work they are qualified for, on the Gas Safe Register. Ask to see their ID card, and note that commercial catering and commercial plant work require specific qualifications beyond domestic ones.
If anyone suspects a gas leak, they should leave the area immediately, avoid switching electrical items on or off, and call the National Gas Emergency Service on 0800 111 999 from a safe place.
Poor combustion or a damaged or blocked flue can release carbon monoxide, which is colourless and odourless. The risk is not confined to the plant room: fumes can travel through voids, shared walls and ceiling spaces into neighbouring units. That is one reason a landlord of a multi-let building should take flue condition and ventilation seriously even where individual tenants have their own heating.
An annual service and safety inspection is widely treated as best practice for commercial boilers. Manufacturers' warranties commonly require it, and insurers often expect it. Whether it is a strict legal requirement for your particular building depends on how the Regulations apply to your premises and on your lease, so the safest wording is the practical one: check your policy and your lease, and assume a yearly visit is expected unless you have good reason to think otherwise.
A proper inspection by a Gas Safe registered engineer typically covers:
That written report is as important as the visit. It tells you whether the plant can continue to run, whether it needs restricting, and what must be fixed and by when.
Book servicing in late summer or early autumn, before the heating season begins. When the first cold snap arrives on Tyneside, Wearside or Teesside, engineer availability tightens quickly, and a boiler that has not run since spring is more likely to reveal faults at precisely the wrong moment. Servicing in September gives you time to order parts and carry out remedial work before tenants notice a problem.
If you manage several buildings, a planned programme is easier than annual one-off bookings. Our annual boiler inspections and regional maintenance contracts across Newcastle, Sunderland, Middlesbrough and Northumberland are set up for exactly this kind of scheduled cover.
Suppose a multi-let office block in Newcastle loses its heating on a freezing January morning. The landlord retains the central boiler under the lease, and the service charge clause covers maintenance and repair of landlord plant. The landlord's agent calls out a Gas Safe registered engineer, who finds a failed circulation pump. It is repaired the same day, and the cost is recovered through the service charge in the normal way, provided the lease allows it. Had the agent left tenants without heat for several days while waiting for quotes, the landlord would have been open to complaints of unreasonable delay, and possibly claims, however clear the cost clause was. The lease sets who pays. It does not give the landlord unlimited time.
Many leases treat repair and replacement differently. Replacing a pump or controller is generally a repair. Replacing an entire boiler at the end of its life may be classed as capital expenditure or an improvement, which landlords often cannot recover through the service charge unless the lease says so expressly. Do not assume replacement is recoverable. Read the wording on "repair", "renewal", "replacement" and "improvement" before you commission a large job, and take legal advice if the position is unclear or a tenant disputes the cost.
Service charge costs must normally be within the lease terms and reasonable in amount and in how they were incurred. Obtaining more than one quotation for non-urgent works, keeping invoices, and explaining the reason for the work all help. Professional guidance on commercial service charges exists, including from RICS, but check the current edition and its status before relying on or citing it in correspondence with a tenant.
Name a contact, publish a fault reporting route, and have a Gas Safe registered engineer available on call. A fast response turns a loss of heat into an inconvenience rather than a dispute. Our emergency callout service exists for this situation.
If there is an incident, the first question from an insurer, a tenant's solicitor or an HSE inspector is usually: what did you do, and can you prove it? A compliance file is your answer. For each boiler, keep:
These records show reasonable steps. They do not guarantee that no claim will succeed, but a landlord with a dated, documented history is in a far stronger position than one relying on recollection.
Give tenants written rules at the start of the let. Set out who can enter the plant room, how to report a fault and to whom, and what to do in an emergency. State clearly that tenants and their staff must not carry out any work on boilers, gas pipework or flues, and must not store items in plant rooms or block ventilation. Those instructions are simple, but they are the ones most often missing.
Where a managing agent runs the building, confirm in writing who is the duty holder for the plant, who instructs engineers, and who holds the paperwork. Assumptions on both sides ("I thought the agent had it") are a common cause of lapsed services and missing records.
Seek professional advice where lease wording is ambiguous, where shared plant serves several units with different lease terms, or where a replacement cost is disputed. A short opinion early on is usually cheaper than a dispute later.
The lease sets who pays for servicing, repair and replacement. Safety duties stay with whoever controls the plant, and for many landlords that means they stay with you. The most reliable protection is a regular Gas Safe registered inspection, a clear written record of who is responsible, and a fast route for tenants to report faults.
If you own or manage commercial property in Newcastle, Sunderland, Middlesbrough, Northumberland or elsewhere in the North East, Commercial Boiler Solutions can arrange a Gas Safe registered inspection or set up a maintenance contract that fits your portfolio. Learn more about our services