HM Land Registry records the plot of land for 78, William Street, Caerphilly as measuring 110 m².

That makes it the 18th largest plot in the postcode, where 23 of the 28 other houses have recorded plot data.

78, William Street, Caerphilly has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Jun 2023.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

The most recent sale of 78, William Street, Caerphilly completed on 25th November 2024 at £185,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 5 times.

Values of comparable properties have risen by 30.2% over the period since November 2024.

• Sold Nov 2024£185,000
• Sold May 2021£123,000
• Sold Mar 2011£80,000

Since 2016 55 properties similar to 78, William Street, Caerphilly have sold within a radius of 1.1 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 5th September 2025, was 6, Standard Street, Caerphilly, CF83 8DE, a freehold house which sold for £230,000.

Read more about house prices in CF83.

• Sold Sep 2025£230,000 | 4 Bed House6, Standard Street, Caerphilly, CF83 8DE6, Standard Street, Caerphilly, CF83 8DE
• Sold Aug 2025£215,000 | 4 Bed House6 Ystrad Buildings, Caerphilly, CF83 8BT6 Ystrad Buildings, Caerphilly, CF83 8BT
• Sold Jul 2025£162,000 | 4 Bed House56, William Street, Caerphilly, CF83 8FX56, William Street, Caerphilly, CF83 8FX
• Sold Nov 2024£149,500 | 3 Bed House34, Thomas Street, Caerphilly, CF83 8DP34, Thomas Street, Caerphilly, CF83 8DP
• Sold Jun 2024£178,000 | 4 Bed House7, Coronation Street, Caerphilly, CF83 8DL7, Coronation Street, Caerphilly, CF83 8DL
• Sold Apr 2024£175,000 | 4 Bed House17, William Street, Caerphilly, CF83 8DQ17, William Street, Caerphilly, CF83 8DQ
• Sold Nov 2023£153,000 | 3 Bed House49, William Street, Caerphilly, CF83 8DQ49, William Street, Caerphilly, CF83 8DQ
• Sold May 2022£180,000 | 4 Bed House89, James Street, Caerphilly, CF83 8FY89, James Street, Caerphilly, CF83 8FY
• Sold Jan 2022£160,000 | 3 Bed House90, James Street, Caerphilly, CF83 8FY90, James Street, Caerphilly, CF83 8FY
• Sold Dec 2021£166,000 | 4 Bed House92, James Street, Caerphilly, CF83 8FY92, James Street, Caerphilly, CF83 8FY
• Sold Sep 2021£158,000 | 3 Bed House50, Mary Street, Caerphilly, CF83 8HN50, Mary Street, Caerphilly, CF83 8HN
• Sold Jun 2021£115,000 | 4 Bed House2, Coronation Street, Caerphilly, CF83 8DL2, Coronation Street, Caerphilly, CF83 8DL
• Sold Jun 2021£158,000 | 4 Bed House68, James Street, Caerphilly, CF83 8FY68, James Street, Caerphilly, CF83 8FY
• Sold Apr 2021£120,000 | 4 Bed House29, Mary Street, Caerphilly, CF83 8HN29, Mary Street, Caerphilly, CF83 8HN
• Sold Feb 2020£166,500 | 4 Bed House4, Standard Street, Caerphilly, CF83 8DE4, Standard Street, Caerphilly, CF83 8DE
• Sold Jan 2019£103,000 | 4 Bed House84, James Street, Caerphilly, CF83 8FY84, James Street, Caerphilly, CF83 8FY
• Sold May 2018£133,500 | 3 Bed House24, Standard Street, Caerphilly, CF83 8DE24, Standard Street, Caerphilly, CF83 8DE
• Sold Aug 2017£115,000 | 3 Bed House10, Upper Glyn Gwyn Street, Caerphilly, CF83 8FZ10, Upper Glyn Gwyn Street, Caerphilly, CF83 8FZ
• Sold Aug 2017£129,000 | 3 Bed House61, James Street, Caerphilly, CF83 8FY61, James Street, Caerphilly, CF83 8FY
• Sold Aug 2016£110,000 | 4 Bed House19, Upper Glyn Gwyn Street, Caerphilly, CF83 8FZ19, Upper Glyn Gwyn Street, Caerphilly, CF83 8FZ

Of the 71 addresses on William Street, Trethomas, Caerphilly, CF83, 78, William Street, Caerphilly comes out as the 4th largest and the 13th most expensive in our analysis of the public data.

It is also £35k less expensive than the average property across the CF83 district.

• Energlyn & Churchill Park

  |

  3.6 km away
• Caerphilly

  |

  3.7 km away
• Llanbradach

  |

  3.8 km away

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