Gas Safety Certificates in Erith — CP12 for Landlords & Homeowners
Gas Safety Certificates from £79. Fixed pricing. Same-day documentation. Fast booking. Covering Erith, Belvedere, Thamesmead and all surrounding postcodes.
Fixed Pricing — No Surprises
We display our pricing clearly because most of our competitors don't, and we think that's unhelpful.
| Service | Fixed Price |
|---|---|
| Single gas appliance inspection (e.g. boiler only) | £79 |
| Two gas appliances (e.g. boiler + gas hob) | £99 |
| Three or more gas appliances | £115 |
| Boiler service + Gas Safety Certificate (combined) | £149 |
| CP12 re-inspection (if initial remedial work required) | £50 |
The Checkatrade benchmark for Erith is £74–£106. Our pricing is competitive and we don't charge hidden travel or parking fees.
What Is a Gas Safety Certificate (CP12)?
A Gas Safety Certificate — also known as a CP12, after the Gas Safe Register checklist — is the official documentation that confirms all gas appliances in a property have been inspected by a Gas Safe registered engineer and found to be operating safely.
The certificate records the address, the engineer's Gas Safe registration number, details of all appliances inspected, results of each safety check, any defects found, and the date of inspection (valid for 12 months from issue).
Landlord Legal Requirements
Under the Gas Safety (Installation and Use) Regulations 1998, landlords must arrange an annual gas safety check on all gas appliances, issue a copy of the Gas Safety Record to current tenants within 28 days, issue a copy to new tenants before they move in, and retain records for a minimum of two years.
Non-compliance is a criminal offence — penalties include unlimited fines and potential prosecution under health and safety legislation.
What a Gas Safety Check Covers
Gas boiler or gas water heater
Checking combustion, flue integrity, ventilation, gas pressure, safety devices, controls operation.
Gas hob or cooker
Burner operation, ignition, stability, gas connections.
Gas fire or gas room heater
Combustion, flue or balanced flue operation, safety devices.
All gas pipework and connections
Visual inspection for corrosion, joint integrity, pipework installation standards.
Flues and chimneys serving gas appliances
Checking for blockage, correct termination, flue gas spillage test.
Ventilation provision
Confirming adequate ventilation for gas appliances requiring it.
Carbon monoxide alarm check
We check whether a CO alarm is fitted and functioning (strongly recommended; required by law in properties with solid fuel appliances).
Gas Safety Certificates for Landlords
Legal Requirements
- ✓Annual gas safety check on all gas appliances in the tenancy
- ✓Carried out by a Gas Safe registered engineer
- ✓Copy issued to current tenants within 28 days
- ✓Copy issued to new tenants before they move in
- ✓Records retained for minimum two years
HMO Properties
Houses in Multiple Occupation (HMOs) have additional requirements. We carry out gas safety inspections for HMOs — call to discuss your specific property and we'll confirm what's required and the cost.
Call for HMO Pricing →Multiple Properties
If you manage multiple rental properties in Erith and surrounding areas, call us to discuss a portfolio arrangement. We can coordinate inspections across multiple properties and provide a consistent, reliable service with bulk pricing on larger portfolios.
Discuss Portfolio Pricing →How Quickly Can You Attend?
For straightforward gas safety certificate bookings, we typically have appointments available within three to five working days. During busy periods (September–November when landlords renew before the heating season), book early.
For urgent certificates — where a certificate has lapsed and a new tenancy is imminent — call us directly on 01474 329154 and we'll prioritise where we can. We aim to offer same-week appointments in most cases.
The Gas Safety Inspection Process
Book Your Appointment
Call 01474 329154 or use the contact form. We'll confirm a date, time and the address. Let us know how many gas appliances are in the property so we can confirm the correct price.
Engineer Arrives
Our Gas Safe registered engineer arrives at the agreed time. The inspection takes 30–60 minutes for a standard single-appliance property (boiler only), or up to 90 minutes for a property with multiple gas appliances.
Inspection Carried Out
The engineer inspects each gas appliance and all related pipework and flues, following the Gas Safe Register checklist. You don't need to be present if you've arranged access, though we recommend being available for the first inspection at a property.
Certificate Issued
If all appliances pass, the CP12 certificate is completed on site and a copy is provided immediately. We also email the certificate — you'll have documentation the same day. If any appliance is found to be unsafe, we'll explain clearly what was found and what remedial action is required.
Gas Safety Certificate Coverage Area
We cover the full local service area for gas safety inspections. View location-specific pages:
Frequently Asked Questions
How much should a gas safety certificate cost in Erith?+
Our fixed prices start at £79 for a single-appliance inspection. The Checkatrade benchmark for the Erith area is £74–£106. We display our prices transparently because we think it's more respectful of your time than making you call for a quote just to find out a number.
How long does a gas safety check take?+
A standard boiler-only inspection typically takes 30–45 minutes. Properties with multiple gas appliances (boiler plus gas hob, gas fire, etc.) take 60–90 minutes. The engineer needs unobstructed access to each appliance and to the boiler flue — please ensure these are accessible before the visit.
What happens if my appliances fail the safety check?+
If an appliance is found to be Immediately Dangerous (ID), the engineer will isolate it (disconnect from the gas supply) and label it accordingly. The appliance must be repaired or replaced before being reconnected. If classed At Risk (AR), it should not be operated until remedial work is carried out. We'll explain what was found and what work is required. We can carry out necessary repairs and return for a re-inspection at a reduced rate of £50.
How often do landlords need a gas safety certificate?+
Every 12 months. The certificate has a 12-month validity — it cannot be extended or backdated. Landlords should book the next inspection before the current certificate expires to avoid any gap in compliance.
What is a CP12 certificate?+
CP12 is the informal name for the Gas Safety Record — the official documentation issued following a gas safety inspection. The name comes from the Corgi (now Gas Safe) inspection checklist. The terms 'gas safety certificate', 'Gas Safety Record' and 'CP12' are used interchangeably and refer to the same document.
Can I get a gas safety check and boiler service at the same time?+
Yes, and we'd recommend it. A combined boiler service and gas safety certificate from one visit is more convenient and costs less than two separate appointments. Our combined service and GSC is priced at £149.
Can a plumber do a gas safety check?+
Only if they are also Gas Safe registered. Gas Safe registration is the legal qualification required to carry out gas safety inspections and issue CP12 certificates in England, Wales and Scotland. All Thames Plumber Services engineers who carry out gas safety inspections hold current Gas Safe registration.
Do you need a gas safety certificate to sell a house?+
A Gas Safety Certificate is not a legal requirement for residential property sales — unlike an Energy Performance Certificate, which is legally required to market a property for sale. However, solicitors and buyers may request evidence of recent gas safety checks. For peace of mind, consider having one done before listing.
Book a Gas Safety Certificate
Fixed pricing. Gas Safe registered engineers. Same-day documentation.
We cover Erith, Belvedere, Thamesmead, Slade Green, Abbey Wood, Crayford, Northfleet and Swanscombe.
Call 01474 329154