Tonypandy · CF40
Gas safety certificate in CF40 (Tonypandy)? We'll point you the right way.
Covering Tonypandy, Trealaw, Penygraig, Dinas, Williamstown, Cwm Clydach, Llwynypia, Penrhiwfer, including Llwyn-y-pia, Pen-y-graig, Porth. Find Gas Safe registered engineers nearby.
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CF40 (Tonypandy) in a nutshell
CF40 covers Tonypandy, Trealaw, Penygraig, Dinas, Williamstown, Cwm Clydach, Llwynypia, Penrhiwfer, in Rhondda Cynon Taf. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for CF40
Rhondda Cynon Taf council area
CF40 is in Rhondda Cynon Taf's area. Some councils run their own landlord licensing, so it's worth checking theirs.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
CF40 stretches across Cwm Clydach, Llwyn-y-pia, Pen-y-graig and more, so give your full postcode, not just 'CF40', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Tonypandy run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Tonypandy: 86.7% mains gas onlyWales landlord rules: quick version
- 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.
More detail on the Tonypandy page. Always double-check on GOV.WALES.
Next door to CF40
Frequently asked questions
Which areas does CF40 cover?
CF40 (Tonypandy, Trealaw, Penygraig, Dinas, Williamstown, Cwm Clydach, Llwynypia, Penrhiwfer) includes the wards of Cwm Clydach, Llwyn-y-pia, Pen-y-graig, Porth, Tonypandy, Tonyrefail West, Trealaw (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to CF40?
Neighbouring districts include CF43 (Ferndale), CF39 (Porth), CF41 (Pentre), CF44 (Aberdare), CF42 (Treorchy) (ONS Postcode Directory via Doogal). A pro covering CF40 may well cover these too, so it's worth asking.
How many homes are in CF40?
About 8,753 households and 20,541 residents at the 2011 Census, across 479 active postcodes (Doogal / ONS Postcode Directory).
Which council area is CF40 in?
CF40 sits in Rhondda Cynon Taf (postcodes.io). Parliamentary constituency: Rhondda and Ogmore.
📊 The numbers behind this page
- Postcode district
- CF40 1
- Areas covered
- Tonypandy, Trealaw, Penygraig, Dinas, Williamstown, Cwm Clydach, Llwynypia, Penrhiwfer 2
- Active postcodes
- 479 3
- Households (2011 Census, via Doogal)
- 8,753 2
- Population (2011 Census, via Doogal)
- 20,541 2
- Electoral wards
- Cwm Clydach, Llwyn-y-pia, Pen-y-graig, Porth, Tonypandy, Tonyrefail West, Trealaw 4
- Parliamentary constituencies
- Rhondda and Ogmore 4
- Local authority
- Rhondda Cynon Taf 4
- Households heated by mains gas only (Tonypandy built-up area)
- 86.7% 5
- ONS Postcode Directory
- Doogal
- Doogal / ONSPD
- postcodes.io
- ONS Census 2021
Made with open data. See where it all comes from. Updated 26 October 2026.