Landlord Gas Safety Certificate (CP12) — Twickenham & TW Postcode Area
Every landlord who lets a property with gas appliances in England is legally required to arrange an annual gas safety inspection carried out by a Gas Safe registered engineer. The resulting record — commonly called a CP12 or Landlord Gas Safety Certificate — is not optional. Failing to hold a valid, in-date certificate can result in unlimited fines, prosecution, and in the event of an incident, potential liability for serious harm to your tenants.
Emergency Plumbers TW arranges CP12 inspections by Gas Safe registered engineers across the full TW postcode area, including Twickenham, Richmond, Teddington, Isleworth, Hounslow, Feltham, Staines, and surrounding areas.
What Is a CP12 and Who Needs One?
A CP12 is the official record produced after a Gas Safe engineer has inspected every gas appliance, flue, and pipework installation at a rental property. The law — specifically the Gas Safety (Installation and Use) Regulations 1998 — requires landlords to:
- Arrange an inspection every 12 months without exception
- Cover all let residential properties and HMOs with gas installations
- Provide a copy of the certificate to existing tenants within 28 days of the inspection
- Give new tenants a copy before they move in
- Retain records for a minimum of two years
If your property is managed through a letting agent, the legal duty still rests with you as the landlord unless you have a written agreement transferring that responsibility.
What Does the Inspection Cover?
Our Gas Safe engineer will check and record the condition of:
- Boiler and central heating system — operation, flue integrity, ventilation, and safety controls
- Gas hob, cooker, or range — burner operation, flame failure devices, and connections
- Gas fires and decorative appliances — combustion, seals, and flue draw
- Gas pipework throughout the property — pressure testing and visual inspection for corrosion or poor jointing
- Carbon monoxide and smoke alarm provision (advisory notes where relevant)
At the end of the visit you receive a signed CP12 certificate confirming pass or advisory status for each appliance. If any appliance is found to be immediately dangerous it will be made safe before the engineer leaves, and you will receive a clear written report.
Same-Week Bookings Available
We understand that expiry dates and tenant move-in dates do not always align conveniently. We offer same-week appointments across the TW area, with early-morning and Saturday slots available to minimise disruption to occupied properties.
Multi-Property and Letting Agent Accounts
If you manage more than one property, or if you are a letting agent responsible for a portfolio, we can:
- Schedule inspections across multiple properties in a single block to reduce your admin
- Provide consolidated invoicing per portfolio or per quarter
- Issue reminder notifications when certificates are approaching their renewal date
- Offer preferential rates for volume bookings — contact us to discuss your portfolio
We work discreetly and professionally with tenants on your behalf, so you do not need to be present at every inspection.
Book Your CP12 Inspection
Do not wait until your certificate has lapsed. Call us on 07360 268948 to arrange your inspection or to discuss a service agreement for multiple properties. We cover Twickenham, Richmond, Teddington, Isleworth, Hounslow, Feltham, Staines, and all surrounding TW postcodes.
Every inspection is carried out by a Gas Safe registered engineer. Ask to see their Gas Safe ID card.
What to do right now in Hammersmith
- Book your CP12 inspection before your current certificate expires — penalties apply from day one of non-compliance.
- Gather details of all gas appliances in the property (boiler, hob, fire, pipework) so the engineer can work efficiently.
- Ensure the property is accessible on the agreed date — a missed appointment still incurs a call-out charge.
- Once issued, provide a copy of the CP12 to your tenant within 28 days and keep your own copy for at least two years.
Local to Hammersmith
We cover Hammersmith (W6) — from Hammersmith Broadway, King Street, Hammersmith Bridge and across Chiswick, Fulham, Shepherd's Bush. Being genuinely local means a faster response when every minute counts.