40, William Street, Porth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 Nov 2013.

The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Since 2010 247 properties similar to 40, William Street, Porth have sold within a radius of 1.2 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 2nd April 2026, was 2, Llanwonno Road, Porth, CF39 0HU, a freehold house which sold for £135,000.

Read more about house prices in CF39.

• Sold Apr 2026£135,000 | 3 Bed House2, Llanwonno Road, Porth, CF39 0HU2, Llanwonno Road, Porth, CF39 0HU
• Sold Dec 2025£128,000 | 3 Bed House38, Church Terrace, Porth, CF39 0ET38, Church Terrace, Porth, CF39 0ET
• Sold Sep 2025£156,500 | 3 Bed House12, Station Road, Porth, CF39 0HA12, Station Road, Porth, CF39 0HA
• Sold Mar 2025£90,000 | 3 Bed House13, Graig Road, Porth, CF39 0NS13, Graig Road, Porth, CF39 0NS
• Sold Jan 2025£120,000 | 3 Bed House3, Weston Terrace, Porth, CF39 0ER3, Weston Terrace, Porth, CF39 0ER
• Sold Jun 2024£110,000 | 3 Bed House31, William Street, Porth, CF39 0EU31, William Street, Porth, CF39 0EU
• Sold Jun 2023£145,000 | 3 Bed House8, Station Road, Porth, CF39 0HB8, Station Road, Porth, CF39 0HB
• Sold Apr 2023£75,000 | 3 Bed House47, William Street, Porth, CF39 0EY47, William Street, Porth, CF39 0EY
• Sold Mar 2023£145,000 | 3 Bed House6, Graig Road, Porth, CF39 0NS6, Graig Road, Porth, CF39 0NS
• Sold Nov 2022£105,000 | 3 Bed House15, Graig Road, Porth, CF39 0NS15, Graig Road, Porth, CF39 0NS
• Sold Nov 2022£100,000 | 3 Bed House45, Ynys Street, Porth, CF39 0HL45, Ynys Street, Porth, CF39 0HL
• Sold Jul 2022£123,000 | 3 Bed House60, William Street, Porth, CF39 0EY60, William Street, Porth, CF39 0EY
• Sold Apr 2022£105,000 | 3 Bed House20, Weston Terrace, Porth, CF39 0ER20, Weston Terrace, Porth, CF39 0ER
• Sold Mar 2021£125,000 | 3 Bed House15, Weston Terrace, Porth, CF39 0ER15, Weston Terrace, Porth, CF39 0ER
• Sold Oct 2019£95,000 | 3 Bed House42, William Street, Porth, CF39 0EY42, William Street, Porth, CF39 0EY
• Sold Oct 2018£78,000 | 3 Bed House52, William Street, Porth, CF39 0EY52, William Street, Porth, CF39 0EY
• Sold Aug 2017£69,000 | 3 Bed House30, Church Terrace, Porth, CF39 0ET30, Church Terrace, Porth, CF39 0ET
• Sold Aug 2015£65,000 | 3 Bed House50, William Street, Porth, CF39 0EY50, William Street, Porth, CF39 0EY
• Sold Feb 2013£59,950 | 3 Bed House41, William Street, Porth, CF39 0EY41, William Street, Porth, CF39 0EY
• Sold Oct 2010£94,000 | 3 Bed House34, William Street, Porth, CF39 0EY34, William Street, Porth, CF39 0EY

Of the 68 addresses on William Street, Porth, CF39, 40, William Street, Porth comes out as the 45th largest and the 22nd most expensive in our analysis of the public data.

It is also £2k less expensive than the average property across the CF39 district.

• Porth

  |

  1.4 km away
• Dinas (Rhondda)

  |

  2.2 km away
• Trehafod

  |

  2.6 km away

The flood risk here is rated Very Low, based on Environment Agency data.