Tonypandy · CF40

Plumbing compliance check 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 plumbers 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

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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 authority
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Give 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) wards
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Older terraces, older pipes

Tonypandy has lots of terraced homes. In older ones, ask the plumber to look at shared supply pipes and any old tanks in the loft.

Where's this from?ONS Census 2021, Tonypandy: 71.8% terraced
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New to plumbing compliance checks? 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

  • Fit to live in: keep water, drainage and heating in repair.
  • Legionella: assess the risk.

More detail on the Tonypandy page. Always double-check on GOV.WALES.

Next door to CF40

CF43 · FerndaleCF39 · PorthCF41 · PentreCF44 · AberdareCF42 · TreorchyCF37 · Pontypridd

← Plumbing & water compliance across Tonypandy · all areas

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 in converted/shared houses (Tonypandy built-up area)
0.4% 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.