Gas Safe Registered · Certificate Within 24 Hours · City of London
Gas Safety Certificate City of London — from £64.99
Annual CP12 gas safety inspection for landlords in City of London. Gas Safe registered engineers, fixed pricing, no hidden charges — certificate emailed within 24 hours.
Postcodes covered: EC2, EC1, EC4, E1, EC3. Next-day appointments available — book online in under 3 minutes.
from£64.99
What is a Gas Safety Certificate (CP12)?
A Gas Safety Certificate, formally known as a CP12, is a document confirming that all gas appliances, flues and pipework in a rental property have been inspected by a Gas Safe Registered engineer and found to be safe. The engineer checks each appliance for correct operation, adequate ventilation, secure flue connections and correct gas pressure, and lists every appliance on the certificate along with its result.
Every private landlord in England has been legally required to hold a valid CP12 and renew it every 12 months since the Gas Safety (Installation and Use) Regulations 1998 came into force. This national duty applies in City of London as it does across England, and an HMO licence can add its own conditions on top.
Gas safety in City of London — local property context
The City had 8,161 homes in March 2022, and over 40% of them are in the Barbican, Golden Lane and Smithfield areas; the Barbican Estate alone accounts for 2,140. At the 2021 Census, 5.5% of households lived in flats in converted buildings such as former warehouses or churches, and only 1.3% in converted or shared houses (London 11.1%).
Most homes here are small flats: 53.4% of occupied City homes have one bedroom, against 21.2% across London, and only 3.8% have four bedrooms or more. Our Gas Safe registered engineers are experienced with the boilers, gas fires and appliances typically found in properties across the EC2, EC1, EC4, E1, EC3 postcode areas, and regularly carry out CP12 inspections across City of London for private landlords, letting agents and HMO operators.
Postcodes covered in City of London
EC2, EC1, EC4, E1, EC3 and surrounding areas. Enter your full postcode during booking to confirm coverage and availability.
Gas safety in City flats: what the record covers
Most Barbican homes get background heat from the estate's shared electric underfloor system, so the boiler-centred check many landlords picture may not match the flat. The gas safety record covers the gas appliances the flat actually has; list them when you book.
In a City HMO, licensed or not, the Corporation's HMO standards require a yearly check of every gas appliance by a Gas Safe registered engineer. The evidence goes to the City each year.
Property licensing in City of London
Mandatory HMO licensing
Mandatory HMO · In force
- Applies to:
- Homes shared by 5 or more people forming 2 or more households, including homes above or below commercial floors. A shared flat in a purpose-built block of 3 or more self-contained flats is outside this scheme
- Area:
- Whole City
- Period:
- Current definition since 1 October 2018 (SI 2018/221); in force as of October 2026
Checked October 2026. Schemes and fees change, so confirm the current position on the City of London Corporation licensing page.
- Households renting privately
- 48.3% (London 30.0%)
- Census 2021
- Households in purpose-built flats
- 87.0% (London 40.3%)
- Census 2021
- Homes built 1955 to 1982
- 41.4% (London 17.5%)
- VOA 2025
- Conservation areas
- 28, with more than 600 listed buildings and structures
- City of London Corporation
Sources
- City of London Corporation: Private rented accommodation
- City of London Corporation: Houses in multiple occupation (HMO)
- City of London Corporation: HMO licence application form
- City of London Corporation: Guidance on HMO standards
- Legislation.gov.uk: Licensing of HMOs (Prescribed Description) (England) Order 2018
- Legislation.gov.uk: Regulatory Reform (Fire Safety) Order 2005, article 6
- GOV.UK: A guide to making your small block of flats safe from fire
- GOV.UK: Check your fire safety responsibilities under the Fire Safety (England) Regulations 2022
- City of London Corporation: Strategic Housing Market Assessment 2023
- City of London Corporation: Barbican Estate Listed Building Management Guidelines
- City of London Corporation: Golden Lane Estate Listed Building Management Guidelines
- City of London Corporation: Conservation areas
- City of London Corporation: Listed buildings
- City of London Corporation: Barbican Estate, register your sub-tenant
- City of London Corporation: Barbican Estate home improvements
- City of London Corporation: Asbestos data, all blocks, Barbican Estate
- City of London Corporation: Barbican Estate fire safety
- City of London Corporation: Barbican Estate fire risk assessments
- City of London Corporation: Cromwell Tower fire risk assessment (2024)
- City of London Corporation: Barbican Estate heating study (November 2024)
- ONS Census 2021: TS054 Tenure (Nomis)
- ONS Census 2021: TS044 Accommodation type (Nomis)
- VOA: Council Tax Stock of Properties 2025
Gas Safety Certificate pricing in City of London
Fixed pricing by number of gas appliances. The same prices apply in City of London as across all other London boroughs — no London surcharge. The only location-based fee is the £20 Congestion Charge Zone addition for central London properties.
Gas Safety Certificate (CP12) — City of London pricing
| Description | Price |
|---|---|
| Up to 2 Appliances (excl. boiler)Cheapest | £64.99Book |
| 3 Appliances (excl. boiler) | £74.99Book |
| Boiler Check + Service | £84.99Book |
Additional charges (where applicable)
- Parking charge if no free on-site parking is available: £10
- Properties in the London Congestion Charge Zone: £20
Want the full service page? See our full Gas Safety Certificate page →
What's included from £64.99
Every gas safety check we carry out in City of London covers the complete inspection at no extra cost beyond the price shown.
- Inspection of every gas appliance — boiler, hob, cooker and gas fire
- Flue flow and spillage testing on every appliance with a flue
- Gas pressure and burner pressure checks
- Visual check of pipework, joints and fittings for leaks or damage
- Ventilation adequacy check for every gas appliance
- Gas Safe registered engineer — fully qualified and independently assessed
- Signed CP12 certificate emailed within 24 hours
- Immediate isolation of any appliance found to be unsafe
Gas Safety Certificate City of London — frequently asked questions
Other landlord certificates in City of London
We also cover these landlord certificates in City of London:
EICR
in City of London
EPC
in City of London
FRA
in City of London
PAT Testing
in City of London
Commercial EICR
in City of London
Electrical Diagnostic
in City of London
Fuse Box
in City of London
Emergency Lights
in City of London
Commercial Gas (CP42)
in City of London
Boiler Installation
in City of London
Fire Safety Cert
in City of London
Fire Alarm Install
in City of London
Fire Door Cert
in City of London
Extinguisher Testing
in City of London
Commercial EPC
in City of London
Asbestos Survey
in City of London
Legionella
in City of London
Managing an HMO in City of London? See all HMO compliance certificates →
Gas Safety Certificate in nearby boroughs
We cover all 33 London boroughs. See Gas Safety Certificate pricing and booking for areas near City of London:
Book your Gas Safety Certificate in City of London
Book online in under 3 minutes. A Gas Safe registered engineer confirms your appointment. Certificate emailed within 24 hours.
Next-day appointments across City of London and all 33 London boroughs.
Book Gas Safety Certificate in City of London — from £64.99Fixed pricing. No hidden charges. Gas Safe Registered. Certificate emailed within 24 hours.