Treharris · CF46

Gas safety certificate in CF46 (Treharris)? We'll point you the right way.

Covering Treharris, Quakers Yard, Bedlinog, Nelson, including Bedlinog and Trelewis, Plymouth, St Cattwg. Find Gas Safe registered engineers nearby.

Free to use · No sign-up to search · Always check their registration before you book

Request a gas safety certificate in CF46 (Treharris)

No gas safety engineer listed for CF46 (Treharris) yet. Tell us what you need and we'll find you a registered gas safety engineer, free.

Request a gas safety certificate in CF46 (Treharris)

How to check a gas safety engineer is registered: see the Treharris page.

See what a listing looks like

CF46 (Treharris) in a nutshell

CF46 covers Treharris, Quakers Yard, Bedlinog, Nelson, in Caerphilly and Merthyr Tydfil. Give your full postcode when you ask for quotes, so the pro can confirm they cover your street.

Local tips for CF46

🧭

Two councils in one district

CF46 is split between Caerphilly and Merthyr Tydfil. Some councils run their own landlord licensing, so check which one your home is in.

Where's this from?postcodes.io (ONSPD) local authority
📍

Give your full postcode

CF46 stretches across Bedlinog and Trelewis, Nelson, Plymouth and more, so give your full postcode, not just 'CF46', when you ask for quotes.

Where's this from?postcodes.io (ONSPD) wards
🔥

Mostly mains gas round here

Most homes in Treharris run on mains gas, so a standard boiler-and-hob check is what most people need.

Where's this from?ONS Census 2021, Treharris: 87.1% mains gas only
🔥
New to gas safety certificates? Here's what to expect, how to get ready and what it costs, in plain English. Read the quick guide →

Wales 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 Treharris page. Always double-check on GOV.WALES.

Next door to CF46

CF45 · Mountain AshCF82 · HengoedCF81 · BargoedCF37 · PontypriddNP12 · BlackwoodNP24 · New Tredegar

← Gas safety (CP12) across Treharris · all areas

Frequently asked questions

Which areas does CF46 cover?

CF46 (Treharris, Quakers Yard, Bedlinog, Nelson) includes the wards of Bedlinog and Trelewis, Nelson, Plymouth, St Cattwg, Treharris, Ystrad Mynach (ONS Postcode Directory via postcodes.io).

Which postcode districts are next to CF46?

Neighbouring districts include CF45 (Mountain Ash), CF82 (Hengoed), CF81 (Bargoed), CF37 (Pontypridd) (ONS Postcode Directory via Doogal). A pro covering CF46 may well cover these too, so it's worth asking.

How many homes are in CF46?

About 5,916 households and 14,291 residents at the 2011 Census, across 349 active postcodes (Doogal / ONS Postcode Directory).

Which council area is CF46 in?

CF46 sits in Caerphilly, Merthyr Tydfil (postcodes.io). Parliamentary constituency: Caerphilly, Merthyr Tydfil and Aberdare.

📊 The numbers behind this page
Postcode district
CF46 1
Areas covered
Treharris, Quakers Yard, Bedlinog, Nelson 2
Active postcodes
349 3
Households (2011 Census, via Doogal)
5,916 2
Population (2011 Census, via Doogal)
14,291 2
Electoral wards
Bedlinog and Trelewis, Nelson, Plymouth, St Cattwg, Treharris, Ystrad Mynach 4
Parliamentary constituencies
Caerphilly, Merthyr Tydfil and Aberdare 4
Local authority
Caerphilly, Merthyr Tydfil 4
Households heated by mains gas only (Treharris built-up area)
87.1% 5
  1. ONS Postcode Directory
  2. Doogal
  3. Doogal / ONSPD
  4. postcodes.io
  5. ONS Census 2021

Made with open data. See where it all comes from. Updated 26 October 2026.