Swansea · Wales
Gas safety certificate (CP12) in Swansea
What you need: A yearly gas safety check of the gas appliances and flues you provide, by a Gas Safe registered engineer, with a copy of the record (CP12) for the contract-holder.
How often: Every year: a gas safety check by a Gas Safe registered engineer.
Free to use · No sign-up · Always check their registration before you book · Search another town or postcode
Request a gas safety certificate in Swansea
No gas safety engineer listed for Swansea yet. Tell us what you need and we'll find you a registered gas safety engineer, free.
Request a gas safety certificate in Swansea
Opens your email app with a short template (address, property type, date needed), addressed to [email protected].
Or check a gas safety engineer yourself
- Gas Safe Register: search the engineer's name or licence number and check the ID card shows the work they're doing for you
Only a Gas Safe registered engineer may legally work on gas appliances. These are public registers; we're not part of them and they don't endorse us.
Local tips for Swansea
Mostly mains gas round here
Most homes in Swansea run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Swansea: 80.3% mains gas onlyOwn your home? This is for you too.
It's only the law for landlords, but a yearly check is a smart habit for any home with gas.
Where's this from?
ONS Census 2021, Swansea: 62.3% owner-occupied🤓 Did you know? (Swansea edition)
Swansea is the second-largest city in the country.
The city forms a principal area, officially known as the City and County of Swansea.
Lots of purpose-built flats round here. Check whether the job covers just your flat or the shared areas too.
Source: ONS Census 2021 (TS044): 12.6% purpose-built flats vs 9.4% Wales
Landlord rules in plain English (Wales)
- Every year: a gas safety check by a Gas Safe registered engineer.
- CO alarm: needed where there's a gas, oil or solid fuel appliance.
- Register: with Rent Smart Wales.
The fuller version
Since 1 December 2022 most private tenancies in Wales are 'occupation contracts' under the Renting Homes (Wales) Act 2016.
Private landlords and agents in Wales must register (and, if managing, be licensed) with Rent Smart Wales.
Annual gas safety checks by a Gas Safe registered engineer are required, and the Fitness for Human Habitation regulations require a carbon monoxide alarm where there is a gas, oil or solid fuel appliance.
Rules differ in England, Wales, Scotland and Northern Ireland, and they do change. This is a friendly summary, not legal advice. Double-check on GOV.WALES.
Your corner of Swansea
Also covering: SA2, SA3, SA6, SA7, SA8, SA9, SA80, SA99
Nearby towns
Other checks in Swansea
Free landlord resources
Letting in Swansea? Our free, sourced guides for Wales:
Frequently asked questions
Do landlords in Swansea need a gas safety certificate?
Yes. Rented homes need a gas safety check every year by a Gas Safe registered engineer, with a copy for the contract-holder. (Summary only; check the official guidance.)
Which postcode districts are in Swansea?
11 active postcode districts use the Swansea post town, from SA1 to SA99 (ONS Postcode Directory via Doogal). District pages on this site: SA1, SA4, SA5.
Nobody covers my part of Swansea yet. Where else can I look?
The nearest other towns we list are Cardiff (~34 miles), Bristol (~59 miles), Exeter (~64 miles), measured straight-line between OS Open Names centres. A gas safety engineer based there may travel, so ask.
How many homes in Swansea are privately rented?
18.0% of 104,962 households rented privately at the 2021 Census (ONS TS054); 19.1% rented from a council or housing association.
📊 The numbers behind this page
- Households heated by mains gas only (Swansea local authority)
- 80.3% Source: ONS Census 2021 (TS046)
- Households on tank/bottled gas only (Swansea local authority)
- 1.0% Source: ONS Census 2021 (TS046)
- Households on oil heating only (Swansea local authority)
- 1.9% Source: ONS Census 2021 (TS046)
- Households with no central heating (Swansea local authority)
- 0.9% Source: ONS Census 2021 (TS046)
- Households on district/communal heat networks (Swansea local authority)
- 0.5% Source: ONS Census 2021 (TS046)
- Households privately renting (Swansea local authority)
- 18.0% Source: ONS Census 2021 (TS054)
- Population (GeoNames gazetteer)
- 300,352 Source: GeoNames, CC BY 4.0
- Active postcode districts with this post town
- 11 Source: Doogal / ONS Postcode Directory
- Local authority
- Swansea Source: postcodes.io (ONSPD)
- Region / nation
- Wales Source: OS Open Names via postcodes.io
- Nearest listed town
- Cardiff (~34 miles) Source: Calculated from OS Open Names coordinates
Made with open data. See where it all comes from. Updated 23 October 2026.