Commercial Gas Certificate for Shops and Offices London
Arrange suitable gas safety paperwork for a London shop, office, clinic, salon, showroom or managed workspace. This guide explains how boilers, water heaters, heating equipment, leases, shared plant and mixed-use buildings affect the inspection route and quotation.
Describe the gas equipment, not only the certificate name
An office floor served by central plant, a high-street shop with its own combination boiler and a clinic with a commercial water heater are not the same job. An accurate inventory helps identify the right work category, site access and evidence route.
- Full address, postcode, business use and opening hours.
- Fuel, appliance types, locations and data-plate photographs.
- Who owns or controls each item, pipework and shared plant.
- Reason, exact requested wording, access details and deadline.
What gas equipment does the premises actually use?
Do not rely on the reception desk, lease schedule or an old certificate to identify the installation. Walk through the unit and ask the building manager about plant outside the demised area.
Heating and hot water
Record boilers, water heaters, warm-air units, radiant heaters and gas fires. Include the make, model, output, location, fuel and the rooms or units served. A domestic-sized appliance installed in a workplace still needs the correct commercial context and engineer competence.
Pipework, meters and isolation
Identify the meter position, emergency control, accessible installation pipework and local isolation points. State whether the supply serves only the unit or continues to other tenants, shared plant or residential accommodation.
Staff kitchens and specialist uses
A small staff hob is different from a bakery, demonstration kitchen, beauty treatment process or catering operation. List cooking and process appliances separately because another Gas Safe work category or additional assessment may be required.
Landlord and shared plant
Central boilers, rooftop equipment and riser pipework may sit outside the occupier's area but still serve it. Ask for plant-room records, the responsible party, access arrangements and the boundary between landlord and tenant equipment.
“Commercial gas certificate” is a customer term, not one universal document
An insurer, landlord, incoming tenant or facilities team may use this phrase for evidence that an agreed part of the installation has been inspected. The wording is useful, but it does not define which appliances, pipework, fuel or work categories are included.
A suitable record should identify the premises, agreed scope, equipment inspected, findings, defects, limitations and the registered business or engineer responsible. Read it with any service sheet, commissioning record, repair invoice and landlord plant evidence relevant to the property.
Send any insurer form, lease clause, tender specification or managing-agent checklist before the appointment. The quotation can then state whether the proposed visit will provide the evidence that the recipient expects.
What a commercial gas safety visit may cover
The actual checks depend on the equipment, fuel, access and booked work. A clear quotation protects the customer from assuming that one record covers every system in the building.
Appliances and controls
The agreed inspection may consider accessible appliance condition, operation, combustion safety, controls, flame supervision and signs of unsafe use. The record should make clear which appliances were inspected and which were excluded or inaccessible.
Flues and ventilation
Relevant flue arrangements, combustion-air provision and signs of spillage or poor ventilation may need attention. A gas visit does not automatically certify the whole building ventilation system, indoor-air-quality strategy or mechanical design.
Supply and installation pipework
Accessible pipework, connections, isolation and signs of deterioration may form part of the agreed work. Extensive commercial pipework, strength or tightness testing, purging, alteration and commissioning should be quoted separately where required.
Safety findings and limitations
The record should identify defects, action taken and any part that could not be assessed. It is evidence of an inspection at a point in time, not a warranty against future failure or blanket confirmation that every gas-related duty has been met.
An inspection, service and repair are separate pieces of work
A safety inspection assesses and records the agreed scope. A service follows maintenance tasks appropriate to the appliance, normally informed by the manufacturer's instructions. Fault investigation is used to diagnose a problem, while remedial work may involve adjustment, cleaning, parts or alteration.
Do not assume that ordering a certificate includes a full boiler service, replacement parts, commissioning, ventilation work or a return visit. Ask the quotation to state the appliance count, inspection scope, certificate or record, exclusions, service tasks and how defects will be priced.
Where the site already has a maintenance contractor, share the current service history and outstanding defects. The inspection should complement that evidence rather than create a second, disconnected file.
Who is responsible in a leased shop or office?
Responsibility may be shared, but it should not be vague. Review the lease, facilities agreement and appliance ownership so access, maintenance and remedial decisions do not stall after an inspection.
Business occupier or employer
Manage workplace risks, report faults, prevent unsafe use and keep equipment under the organisation's control properly maintained. Provide trading constraints, authorised contacts and accurate information about tenant-owned appliances.
Commercial landlord
Identify landlord-owned appliances, common supplies, risers, flues and central plant. Provide records and safe access for equipment that serves the unit but is outside the tenant's demise.
Managing agent or facilities team
Coordinate keys, permits, inductions, plant rooms, parking, shutdowns and the responsible approval contact. Keep inspection, service and repair evidence in one accessible compliance file.
Gas engineer or contractor
Confirm the agreed work, relevant Gas Safe categories, limitations and findings. The engineer cannot decide commercial responsibility that the lease parties have left unresolved.
Mixed-use buildings need a system-by-system decision
A shop or office with flats above may have separate meters and boilers, or one item of plant may serve both parts. HSE explains that gas fittings used only in a non-residential area are treated differently from equipment installed there which also serves residential accommodation.
Do not rely on the shop lease title or boiler location. Identify which spaces each appliance, pipe and flue serves; who owns it; who receives the energy bill; and who holds the residential gas safety records. Share this information before the commercial appointment is confirmed.
If duties overlap, the landlord, occupier and agent should cooperate and retain compatible evidence. A commercial record for the shop should not be presented as the annual record for flats unless the competent scope and applicable residential duties have genuinely been met.
How often should shop and office gas equipment be maintained?
HSE says employers should ensure gas appliances are maintained in a safe condition by a competent person and in line with manufacturer instructions and appropriate standards. The appropriate interval depends on the appliance, use, environment, age, previous findings and risk assessment.
This is different from saying that every commercial premises has one statutory annual certificate. An insurer, lease, maintenance plan or facilities standard may require annual evidence, and some equipment may need attention sooner. Follow the strictest relevant requirement and act immediately where a fault or unsafe condition is suspected.
Keep renewal dates, service schedules and defect actions together. Allow enough time before a lease or insurance deadline for access, parts, repairs and any necessary return evidence.
Check the evidence at fit-out, opening and tenant handover
A periodic inspection cannot replace missing installation, commissioning or repair records. Use these project stages to check whether the equipment and responsibility schedule still match the building.
New lease or occupation
Obtain the existing gas records, service history, manuals, defect status and landlord plant evidence. Compare them with the installed equipment before accepting that the handover file is complete.
Office or retail fit-out
Record any appliance, pipework, meter, partition, ceiling, ventilation or plant change. Installation and commissioning should be identified separately from an existing-system safety inspection.
Change of business use
A shop becoming a bakery, clinic, salon or food premises may introduce process heat, catering equipment or different ventilation demands. Re-scope the installation rather than reusing the former tenant's certificate.
Vacant unit or reconnection
State how long equipment has been unused, whether the supply was isolated and what works occurred during vacancy. Do not restart suspect equipment simply because an old record remains on file.
What to send for an accurate quotation
Provide enough information to identify the premises, equipment, requester and practical access. Photographs of appliances, data plates and plant-room entrances are useful when the existing paperwork is incomplete.
- Contact name, telephone, email, address and postcode.
- Business activity, occupancy status and opening or handover date.
- Natural gas or LPG, appliance list, locations and photographs.
- Tenant, landlord or shared ownership and areas served.
- Insurer, lease or agent wording and submission deadline.
- Keys, permits, inductions, roof or plant access and parking.
- Previous records, recent changes, faults and unresolved repairs.
Read the scope and limitations before filing the record
Check the address, fuel, appliance inventory and inspected areas. Read every defect, advisory note, action and limitation. If an appliance was inaccessible or plant records were unavailable, assign responsibility and resolve that evidence gap.
Where remedial work is required, use a Gas Safe registered engineer qualified for the relevant appliance, fuel and work category. Keep the repair invoice, parts information and any return inspection or updated record. Do not remove an out-of-use label or restart unsafe equipment without competent authority.
Provide the final evidence to the insurer, landlord, tenant or facilities team only after checking that it answers their request accurately. A file containing the inspection, service and completed repair evidence is more useful than an isolated certificate.
Stop normal work, keep people away, avoid flames and electrical switches, leave the affected area and follow the premises emergency plan. For a mains-gas or carbon monoxide emergency, call the National Gas Emergency Service on 0800 111 999. For LPG, call the supplier emergency number. Call 999 for fire or immediate danger. Do not use this enquiry form for an emergency.
Check the current official sources
This page helps customers prepare a clear enquiry. It does not replace the law, manufacturer instructions, a workplace risk assessment, lease advice or site-specific competent judgement. Use these primary sources when checking maintenance, competence, mixed-use duties and emergencies.
- HSE: Gas safety for employers
- HSE: Maintenance of work equipment
- HSE: PUWER overview
- HSE: Landlords, agents and mixed-use gas FAQs
- HSE: Gas safety checks and flats above shops
- Legislation.gov.uk: Gas Safety (Installation and Use) Regulations 1998
- Gas Safe Register: Find or check an engineer
- Gas Safe Register: Commercial work categories
- National Gas: Emergency contacts
Request a commercial gas quotation for a shop or office
Include the premises, fuel, appliance inventory, ownership, requester wording, access, previous records and deadline. The information will be reviewed so the suitable commercial gas route can be confirmed by phone or email.
Commercial gas certificate FAQs for shops and offices
Do shops and offices need a commercial gas certificate?
There is no single certificate that every shop or office must hold simply because it is a commercial premises. The dutyholder must keep relevant gas systems safe, and an insurer, landlord, managing agent or facilities team may request evidence. The suitable record depends on the gas equipment, fuel, premises use, ownership and exact purpose of the request.
What gas equipment is commonly found in shops and offices?
Common examples include commercial or domestic-sized boilers used in a workplace, water heaters, warm-air heaters, radiant heaters, gas fires, landlord plant, meters and installation pipework. Some retail premises also have catering appliances or LPG equipment. List every item and where it is located so the enquiry can be matched to the correct competence.
Is a gas safety inspection the same as a boiler service?
No. An inspection records findings for an agreed safety scope at the time of the visit. A service normally includes maintenance tasks set by the manufacturer. Cleaning, fault diagnosis, replacement parts, repairs, commissioning and alterations are separate unless the quotation expressly includes them. A premises may need both inspection evidence and planned servicing.
Is CP17 or CP42 the right certificate for a shop or office?
CP17 is commonly discussed for non-domestic gas installation or appliance records, while CP42 is associated with commercial catering gas appliances. Neither label should be chosen from the business name alone. A shop with a bakery kitchen or an office with catering equipment may need a catering route, while heating plant, LPG and pipework may require different work categories.
Who is responsible for gas safety in a leased commercial unit?
Responsibility can be divided between the business occupier or employer, commercial landlord, managing agent and facilities provider. Read the lease and management agreement, then identify who owns and controls each appliance, the installation pipework, shared plant, access and repairs. Contract wording does not remove the workplace duty to manage risks from equipment under an organisation's control.
What changes if there are flats above the shop or office?
Mixed-use buildings need careful scoping. HSE explains that equipment used only in a non-residential part is treated differently from gas fittings in that area which also serve residential accommodation. State whether the boiler, pipework, meter or flue serves the commercial unit, the flats or both, and provide the lease or management responsibility details before booking.
How often should workplace gas appliances be checked or serviced?
Use the manufacturer instructions, equipment type, intensity of use, operating conditions, risk assessment, previous findings and competent advice. HSE requires employers to maintain gas appliances in a safe condition but does not create one universal annual certificate rule for every shop and office appliance. An insurer or lease may set a separate evidence deadline.
What information is needed for a useful quotation?
Send the full address and postcode, business activity, reason and deadline, exact requester wording, fuel type, appliance inventory, data-plate photographs, equipment ownership, plant-room or roof access, opening hours, shutdown restrictions, parking or loading details, previous records, known faults and the contact who can authorise decisions on site.
What happens if the engineer records a defect or limitation?
Read the affected equipment, classification, action taken and any instruction about continued use. Arrange remedial work with a Gas Safe registered engineer who holds the relevant category, keep repair evidence and ask whether a return visit or updated record is needed. A certificate with unresolved findings or inaccessible equipment is not blanket approval of the premises.
What should I do if I smell gas in a shop or office?
Treat it as an emergency, not a routine certificate enquiry. Keep people away, avoid flames and electrical switches, leave the affected area and follow the site emergency procedure. For a mains-gas or carbon monoxide emergency, call the National Gas Emergency Service on 0800 111 999. For LPG, use the supplier emergency number, and call 999 for fire or immediate danger.
Need commercial gas safety paperwork for a London shop or office?
Send the equipment list, ownership, photographs, requester wording, access and deadline. The enquiry can then be checked against the suitable inspection, service and commercial gas work category.