CP17 Commercial Gas Safety Certificate London
Arrange commercial gas safety paperwork for an existing London business, managed building or non-domestic installation. This guide explains what CP17 wording usually means, what information is needed, where responsibilities may sit and when a different commercial gas route is more appropriate.
CP17 is commonly used to describe a non-domestic gas safety record, but the label alone does not define every check. Send the requester wording, site use, fuel, appliance and plant list, areas under landlord or tenant control, access details and deadline. The scope can then be confirmed before attendance.
Start with the premises, equipment and requester wording
A managing agent may ask for “CP17”, an insurer may ask for a commercial gas safety record, while an occupier may only know that a boiler or plant room needs attention. Forward the original wording and describe the whole site. This reduces the risk of booking an appliance-only visit when the request concerns a wider installation, or ordering a general record when specialist work is required.
- Full address, postcode, business activity and responsible site contact.
- Exact wording from the landlord, insurer, lease, agent or facilities team.
- Natural gas or LPG, appliances, meters, plant, pipework and shared areas.
- Known faults, previous records, access restrictions and required date.
When a CP17-style enquiry may be the right starting point
This route is most useful when the request concerns an existing non-domestic premises or installation rather than one narrowly defined task. The eventual quotation should still identify the equipment and areas included.
Shop, office or clinic
Where boilers, water heaters, warm-air heaters or other gas equipment serve a workplace and the occupier or landlord needs current safety evidence.
Managed commercial building
Where a managing agent or facilities team coordinates plant rooms, shared services, landlord-controlled equipment, risers, meters and several occupiers.
Lease or tenant handover
Where the incoming or outgoing parties need to understand the condition, scope and responsibility for existing gas systems before a unit changes hands.
Insurance or compliance file
Where a requester needs a dated record for a property file and has supplied clear wording about the premises, equipment and deadline.
Boiler room or plant area
Where the enquiry concerns non-domestic heating plant and its associated installation, while any servicing or repair requirement is identified separately.
Mixed-use commercial site
Where retail, offices, hospitality, shared plant or residential elements create different equipment ownership and access arrangements that need to be separated.
What a commercial gas safety visit may consider
The visit should be defined around the particular premises and equipment. Depending on the agreed scope, an engineer may consider accessible installation pipework, appliances and plant, flues or chimneys, ventilation provisions, controls, safety devices, evidence of safe operation and any obvious signs that further investigation or maintenance is needed.
Previous records, appliance schedules and access to landlord-controlled areas help the engineer understand what should be included. Inaccessible rooms, concealed pipework, isolated equipment or systems outside the quotation must be recorded as limitations rather than silently treated as passed.
A safety record is not a repair guarantee
The record describes the agreed inspection and findings at the time of attendance. It does not guarantee future operation, cover hidden defects or prove that excluded equipment has been serviced. If a fault, incomplete combustion work or maintenance need is identified, arrange the appropriate remedial or servicing visit and retain the evidence.
CP17 does not replace every commercial gas service
Several gas records can be relevant at one address. Choose by equipment and work scope, not by whichever certificate code appears first in a search result.
Responsibility follows control, ownership and the lease
Commercial premises often involve more than one party. The freeholder may control central plant and common pipework, the tenant may own appliances inside the unit, and a managing agent or facilities provider may coordinate maintenance. Read the lease, equipment schedules and service-charge arrangements rather than assuming one certificate transfers every responsibility.
HSE guidance says employers must keep gas appliances and associated equipment safe and use competent people for installation, maintenance or repair. The dutyholder should provide safe access, accurate site information and previous records, coordinate affected occupants, retain the completed documentation and act on findings.
Useful handover question
Ask: “Who owns and maintains each appliance, the meter, installation pipework, flue, ventilation provision and shared plant?” Record the answer and any uncertainty before booking. It is easier to correct the scope before attendance than to discover an inaccessible or excluded system at the deadline.
There is no single CP17 expiry date for every commercial premises
A blanket statement that every CP17 certificate lasts exactly twelve months can be misleading. Employers and dutyholders must keep gas equipment safe, while a suitable maintenance and inspection plan depends on the installation and the obligations applying to the site.
Make the equipment and responsible people available
A complete enquiry is especially important in London buildings where loading, parking, security, trading hours and tenant access can restrict attendance. Use this checklist before confirming the appointment.
- Confirm the responsible contact, engineer access time, keys, security procedure, induction and parking or loading arrangements.
- List boilers, water heaters, heaters, catering appliances, plant, meters and LPG equipment, including make and model where known.
- Identify landlord-controlled rooms, shared systems, tenant equipment and any area that needs separate permission.
- Provide the last gas record, service history, appliance schedule, drawings, known defects and recent repair or alteration details.
- Explain trading constraints, occupied areas, vulnerable people and equipment that cannot be interrupted without approval.
- Send the original requester wording and state whether the evidence is for insurance, a lease, handover, audit or planned maintenance.
- Allow time before the deadline for access problems, further investigation or remedial work if the first visit identifies an issue.
Check the address, scope, findings and limitations
A useful record should identify the premises, date, responsible business and engineer, the installation or equipment within scope, the checks or work completed, the result, observations and any limitations. Compare that information with the request rather than filing the document by the CP17 label alone.
Keep the record with servicing, repair and commissioning documents. Where a defect is reported, record who is responsible for the action, arrange the work with an appropriately competent engineer and retain completion evidence. A managing agent should also make sure the relevant landlord, occupier or facilities contact receives the finding.
What if access was incomplete?
An inaccessible appliance or plant room should remain an explicit limitation. Do not treat a partial record as evidence for equipment that was not seen. Arrange access and a return visit where the excluded area forms part of the required safety or contractual scope.
Check registration and relevant commercial categories
Gas work must be matched to the engineer’s competence for the fuel, appliance, installation and activity. Check the Gas Safe Register and the categories shown on the engineer’s ID card; domestic registration alone does not establish competence for every non-domestic appliance or commercial task.
Specialist pipework testing, purging or commissioning should be described separately because the applicable technical procedure depends on installation limits and the work being undertaken. Use the CP15 and CP16 guide when that is the actual requirement.
Do not wait for a certificate enquiry. Avoid flames and electrical switches, move people away from danger and call the National Gas Emergency Service on 0800 111 999 for mains natural gas. For LPG, contact the supplier or use the emergency number for the installation.
Use current sources for workplace duties and competence
These primary sources explain business gas-safety responsibilities, Gas Safe registration and the distinction between general premises safety and specialist commercial gas procedures. The responsible engineer still needs to apply the current requirements to the installation.
Send your CP17 commercial gas enquiry
Include the site address, business use, requester wording, fuel, appliance and plant list, areas under landlord or tenant control, previous records, access constraints and deadline. We will review the information and confirm the suitable next step by phone or email.
For an urgent routine enquiry: submit the details first, then call 020 8004 7911 so the site can be identified quickly.
CP17 commercial gas safety certificate FAQs
What is a CP17 commercial gas safety certificate?
CP17 is a term commonly used for a non-domestic gas safety record covering an agreed commercial installation or premises scope. It is not a single statutory certificate that suits every business. The requester wording, fuel, appliances, pipework, plant and areas to be inspected should be confirmed before booking.
Who may need CP17-style commercial gas safety paperwork?
Business occupiers, commercial landlords, managing agents, facilities teams and organisations may request it for shops, offices, clinics, community premises, managed buildings, boiler rooms or other non-domestic sites. Responsibility depends on the lease, ownership of equipment and who controls the workplace and maintenance.
What may be considered during a CP17 visit?
The agreed visit may consider accessible installation pipework, appliances, flues or chimneys, ventilation, safety devices, controls and the apparent operating condition of the equipment within scope. The engineer records the work completed, findings and limitations. Servicing, repairs or specialist testing are separate unless included in the quotation.
Is a CP17 certificate required every year?
There is no universal CP17 expiry rule for every commercial site. Employers and dutyholders must keep gas equipment safe, while the maintenance and inspection interval may be influenced by manufacturer instructions, equipment condition and use, risk assessment, previous findings, lease terms, insurer requirements and the competent engineer’s advice.
Is CP17 the same as CP42, CP15 or CP16?
No. CP42 normally relates to commercial catering appliances. CP15 and CP16 are commonly requested for defined testing, purging or commissioning work. A CP17-style enquiry is generally about an existing non-domestic installation or premises safety record. Mixed sites may need more than one work scope.
Does CP17 include a commercial boiler service?
Not automatically. A safety record and a planned appliance service answer different questions. If a boiler, water heater or plant item also needs servicing, combustion work or repair, include that requirement and the make and model when requesting a quotation.
What information should I send for a CP17 quotation?
Send the full address and postcode, business use, exact requester wording, natural gas or LPG, appliance and plant list, landlord-controlled or shared areas, previous records, known faults, access contact, trading constraints and deadline. Photographs and asset schedules are helpful where available.
Can a commercial landlord or tenant arrange the visit?
Either may be able to arrange attendance, but the responsible parties should first agree the scope and access. Check the lease and maintenance responsibilities, identify who owns each appliance or system, and include landlord-controlled plant, shared pipework and tenant equipment where relevant.
What happens if a defect or limitation is recorded?
The record should explain the finding and any area or equipment that could not be assessed. Urgent safety action may be needed immediately; other remedial work should be prioritised and completed by a suitably competent engineer. Keep repair evidence with the original record and update the responsible dutyholder.
What should I do if I smell gas at commercial premises?
Do not wait for a routine certificate appointment. Avoid flames and electrical switches, move people away from danger and call the National Gas Emergency Service on 0800 111 999 for mains natural gas. For LPG, contact the supplier or use the emergency number for the installation.
Need CP17 commercial gas safety support in London?
Send the requester wording and complete site details before booking. A clear scope helps the right commercial competence, access arrangements and record be considered from the start.