HM Land Registry records the plot of land for 21, Clos Gwastir, Caerphilly as measuring 348 m².

That makes it the 6th largest plot in the postcode, where all 37 other houses have recorded plot data.

21, Clos Gwastir, Caerphilly has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 29 Sep 2010.

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 21, Clos Gwastir, Caerphilly completed on 9th January 2012 at £237,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 3 times.

Values of comparable properties have risen by 33.0% over the period since January 2012.

• Sold Jan 2012£237,000
• Sold Jul 1999£20,000
• Sold Feb 1997£88,950

Since 2014 59 properties similar to 21, Clos Gwastir, Caerphilly have sold within a radius of 680 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 23rd January 2026, was 53, Heol Ynys Ddu, Caerphilly, CF83 1SD, a freehold house which sold for £405,000.

Read more about house prices in CF83.

• Sold Jan 2026£405,000 | 4 Bed House53, Heol Ynys Ddu, Caerphilly, CF83 1SD53, Heol Ynys Ddu, Caerphilly, CF83 1SD
• Sold Dec 2025£430,000 | 4 Bed House55, Heol Ysgubor, Caerphilly, CF83 1SR55, Heol Ysgubor, Caerphilly, CF83 1SR
• Sold Nov 2025£440,000 | 4 Bed House8, Clos Cae'R Wern, Caerphilly, CF83 1SQ8, Clos Cae'R Wern, Caerphilly, CF83 1SQ
• Sold Aug 2024£400,000 | 4 Bed House28, Heol Ysgubor, Caerphilly, CF83 1SR28, Heol Ysgubor, Caerphilly, CF83 1SR
• Sold Nov 2023£410,000 | 4 Bed House15, Corbett Grove, Caerphilly, CF83 1SZ15, Corbett Grove, Caerphilly, CF83 1SZ
• Sold Jul 2023£412,500 | 4 Bed House9, Wesley Road, Caerphilly, CF83 1SS9, Wesley Road, Caerphilly, CF83 1SS
• Sold Jan 2023£430,000 | 4 Bed House28, Clos Gwastir, Caerphilly, CF83 1TD28, Clos Gwastir, Caerphilly, CF83 1TD
• Sold Feb 2022£440,000 | 4 Bed House32, Clos Enfys, Caerphilly, CF83 1SB32, Clos Enfys, Caerphilly, CF83 1SB
• Sold Jun 2021£345,000 | 4 Bed House9, Pant Llygodfa, Caerphilly, CF83 1TT9, Pant Llygodfa, Caerphilly, CF83 1TT
• Sold Aug 2020£335,000 | 4 Bed House1, Cae Uwchllyn, Caerphilly, CF83 1TY1, Cae Uwchllyn, Caerphilly, CF83 1TY
• Sold Nov 2018£382,500 | 5 Bed House9, Ffordd Erw, Caerphilly, CF83 1RY9, Ffordd Erw, Caerphilly, CF83 1RY
• Sold May 2018£315,000 | 4 Bed House50, Heol Ynys Ddu, Caerphilly, CF83 1SD50, Heol Ynys Ddu, Caerphilly, CF83 1SD
• Sold Nov 2017£323,500 | 4 Bed House2, Herons Way, Caerphilly, CF83 1SW2, Herons Way, Caerphilly, CF83 1SW
• Sold Jul 2017£300,000 | 5 Bed House9, Clos Cae'R Wern, Caerphilly, CF83 1SQ9, Clos Cae'R Wern, Caerphilly, CF83 1SQ
• Sold Apr 2016£299,950 | 5 Bed House35A, Heol Ysgubor, Caerphilly, CF83 1SR35A, Heol Ysgubor, Caerphilly, CF83 1SR
• Sold Feb 2016£280,000 | 5 Bed House35B, Heol Ysgubor, Caerphilly, CF83 1SR35B, Heol Ysgubor, Caerphilly, CF83 1SR
• Sold Dec 2015£282,500 | 5 Bed House64, Heol Ysgubor, Caerphilly, CF83 1SR64, Heol Ysgubor, Caerphilly, CF83 1SR
• Sold Oct 2015£275,000 | 4 Bed House55, Heol Ynys Ddu, Caerphilly, CF83 1SD55, Heol Ynys Ddu, Caerphilly, CF83 1SD
• Sold Oct 2014£240,000 | 4 Bed House36, Clos Enfys, Caerphilly, CF83 1SB36, Clos Enfys, Caerphilly, CF83 1SB
• Sold Oct 2014£280,000 | 4 Bed House12, Clos Cae'R Wern, Caerphilly, CF83 1SQ12, Clos Cae'R Wern, Caerphilly, CF83 1SQ

Of the 37 addresses on Clos Gwastir, Caerphilly, CF83, 21, Clos Gwastir, Caerphilly comes out as the 4th largest and the 5th most expensive in our analysis of the public data.

It is also £201k more expensive than the average property across the CF83 district.

• Aber

  |

  1.0 km away
• Caerphilly

  |

  1.4 km away
• Energlyn & Churchill Park

  |

  1.9 km away

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