Porth · CF39
Gas safety certificate in CF39 (Porth)? We'll point you the right way.
Covering Porth, Llwyncelyn, Cymmer, Glynfach, Trebanog, Ynyshir, Wattstown, Dinas, Tonyrefail, Coed Ely, Thomastown, Gilfach Goch, Evanstown, including Blackmill, Cymer, Gilfach-goch. Find Gas Safe registered engineers nearby.
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How to check a gas safety engineer is registered: see the Porth page.
CF39 (Porth) in a nutshell
CF39 covers Porth, Llwyncelyn, Cymmer, Glynfach, Trebanog, Ynyshir, Wattstown, Dinas, Tonyrefail, Coed Ely, Thomastown, Gilfach Goch, Evanstown, in Bridgend and Rhondda Cynon Taf. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.
Local tips for CF39
Two councils in one district
CF39 is split between Bridgend and Rhondda Cynon Taf. Some councils run their own landlord licensing, so check which one your home is in.
Where's this from?
postcodes.io (ONSPD) local authorityGive your full postcode
CF39 stretches across Blackmill, Cymer, Gilfach-goch and more, so give your full postcode, not just 'CF39', when you ask for quotes.
Where's this from?
postcodes.io (ONSPD) wardsMostly mains gas round here
Most homes in Porth run on mains gas, so a standard boiler-and-hob check is what most people need.
Where's this from?
ONS Census 2021, Porth: 85.8% 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 Porth page. Always double-check on GOV.WALES.
Next door to CF39
Frequently asked questions
Which areas does CF39 cover?
CF39 (Porth, Llwyncelyn, Cymmer, Glynfach, Trebanog, Ynyshir, Wattstown, Dinas, Tonyrefail, Coed Ely, Thomastown, Gilfach Goch, Evanstown) includes the wards of Blackmill, Cymer, Gilfach-goch, Porth, Tonyrefail East, Tonyrefail West, Tylorstown and Ynyshir (ONS Postcode Directory via postcodes.io).
Which postcode districts are next to CF39?
Neighbouring districts include CF40 (Tonypandy), CF43 (Ferndale), CF37 (Pontypridd), CF72 (Pontyclun), CF41 (Pentre) (ONS Postcode Directory via Doogal). A pro covering CF39 may well cover these too, so it's worth asking.
How many homes are in CF39?
About 12,213 households and 28,868 residents at the 2011 Census, across 558 active postcodes (Doogal / ONS Postcode Directory).
Which council area is CF39 in?
CF39 sits in Bridgend, Rhondda Cynon Taf (postcodes.io). Parliamentary constituency: Rhondda and Ogmore.
📊 The numbers behind this page
- Postcode district
- CF39 1
- Areas covered
- Porth, Llwyncelyn, Cymmer, Glynfach, Trebanog, Ynyshir, Wattstown, Dinas, Tonyrefail, Coed Ely, Thomastown, Gilfach Goch, Evanstown 2
- Active postcodes
- 558 3
- Households (2011 Census, via Doogal)
- 12,213 2
- Population (2011 Census, via Doogal)
- 28,868 2
- Electoral wards
- Blackmill, Cymer, Gilfach-goch, Porth, Tonyrefail East, Tonyrefail West, Tylorstown and Ynyshir 4
- Parliamentary constituencies
- Rhondda and Ogmore 4
- Local authority
- Bridgend, Rhondda Cynon Taf 4
- Households heated by mains gas only (Porth built-up area)
- 85.8% 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.