House prices in TrethomasSold prices and price per sq ft
The median home in Trethomas sold for £200,000 between July 2025 and June 2026, based on 33 sales registered with HM Land Registry.
In Caerphilly, prices rose by 4.2% in the year to July 2026, according to the UK House Price Index.
Price per sq ft and per m²
We work out the price per sq ft from sales matched to the floor area on their energy certificate. In Trethomas, fewer than 20 matched sales exist so far, so we do not publish this figure yet. The number of matched sales grows every month.
Median price by property type in Trethomas
Sales between July 2025 and June 2026. A figure needs at least 11 sales.
| Property type | Median price | Middle half of sales | Sales |
|---|---|---|---|
| Detached | Too few sales to publish a figure (4 sales) | ||
| Semi-detached | Too few sales to publish a figure (9 sales) | ||
| Terraced | £172,000 | £158,750 to £207,500 | 19 |
| Flat | Too few sales to publish a figure (1 sales) | ||
Median price each year since 1995
Years with fewer than 11 sales are left out.
Show the figures for each year
| Year | Median price | Sales |
|---|---|---|
| 2025 | £190,000 | 30 |
| 2024 | £175,000 | 35 |
| 2023 | £190,000 | 26 |
| 2022 | £160,000 | 32 |
| 2021 | £149,500 | 50 |
| 2020 | £140,000 | 31 |
| 2019 | £135,000 | 31 |
| 2018 | £123,500 | 30 |
| 2017 | £115,500 | 37 |
| 2016 | £118,000 | 31 |
| 2015 | £110,000 | 27 |
| 2014 | £109,000 | 30 |
| 2013 | £98,250 | 30 |
| 2012 | £95,000 | 33 |
| 2011 | £93,750 | 28 |
| 2010 | £88,500 | 23 |
| 2009 | £86,500 | 20 |
| 2008 | £110,000 | 22 |
| 2007 | £114,000 | 27 |
| 2006 | £107,250 | 45 |
| 2005 | £99,000 | 37 |
| 2004 | £87,000 | 38 |
| 2003 | £74,000 | 63 |
| 2002 | £54,975 | 56 |
| 2001 | £44,500 | 52 |
| 2000 | £43,000 | 56 |
| 1999 | £40,000 | 50 |
| 1998 | £37,950 | 33 |
| 1997 | £38,750 | 29 |
| 1996 | £34,500 | 38 |
| 1995 | £32,500 | 37 |
Price map around Trethomas
Each small area is raised and coloured by its median price over the last 24 months. Hatched areas have too few sales for their own figure.
Caerphilly: house prices, area by area.
- Over one year
- Compared with England and Wales
- Sales
Loading the map
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This browser cannot show the relief map. Please try a more recent browser. Prices by area are listed on the house prices pages.
Latest sold prices in Trethomas
The 20 most recent sales, registered up to August 2026.
| Address | Date | Price | Type |
|---|---|---|---|
| 43 Llanfabon Drive, Trethomas Caerphilly CF83 8GW | 31 Jul 2026 | £205,000 | Semi-detached |
| 79 James Street, Trethomas Caerphilly CF83 8FY | 29 Jul 2026 | £190,000 | Terraced |
| 8 Standard Street, Trethomas Caerphilly CF83 8DE | 1 Jul 2026 | £35,000 | Terraced |
| 35 Newport Road, Trethomas Caerphilly CF83 8DA | 13 May 2026 | £230,000 | Semi-detached |
| 52 William Street, Trethomas Caerphilly CF83 8FX | 8 May 2026 | £210,000 | Terraced |
| 2 Central Houses, Trethomas Caerphilly CF83 8BS | 10 Apr 2026 | £200,000 | Terraced |
| 10 Elm Grove, Trethomas Caerphilly CF83 8GT | 9 Apr 2026 | £170,000 | Terraced |
| 2 Llanfabon Drive, Trethomas Caerphilly CF83 8GJ | 27 Mar 2026 | £235,000 | Semi-detached |
| 10 The Avenue, Trethomas Caerphilly CF83 8BW | 25 Mar 2026 | £157,500 | Terraced |
| 42 Mary Street, Trethomas Caerphilly CF83 8HN | 23 Mar 2026 | £188,000 | Terraced |
| 44 Mary Street, Trethomas Caerphilly CF83 8HN | 23 Feb 2026 | £170,000 | Terraced |
| 15 Coronation Street, Trethomas Caerphilly CF83 8DL | 10 Feb 2026 | £155,000 | Terraced |
| 19 Redbrook Avenue, Trethomas Caerphilly CF83 8DB | 29 Jan 2026 | £189,000 | Semi-detached |
| 26 William Street, Trethomas Caerphilly CF83 8DQ | 19 Dec 2025 | £205,000 | Terraced |
| 66 James Street, Trethomas Caerphilly CF83 8FY | 12 Dec 2025 | £172,000 | Terraced |
| 14 Lower Glyn Gwyn Street, Trethomas Caerphilly CF83 8GA | 11 Dec 2025 | £235,000 | Semi-detached |
| 11 Tyn Y Wern Terrace, Trethomas Caerphilly CF83 8FP | 5 Dec 2025 | £220,000 | Terraced |
| 39 Newport Road, Trethomas Caerphilly CF83 8DA | 3 Dec 2025 | £620,000 | Detached |
| 28 Hazel Grove, Trethomas Caerphilly CF83 8GU | 28 Nov 2025 | £195,000 | Semi-detached |
| 53 William Street, Trethomas Caerphilly CF83 8FX | 12 Nov 2025 | £255,000 | Detached |
Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.
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Questions about house prices in Trethomas
How much does a house cost in Trethomas?
The median price of a home sold in Trethomas between July 2025 and June 2026 was £200,000, from 33 sales. Half of these homes sold for between £162,000 and £235,000.
How much does a terraced house cost in Trethomas?
The median price of a terraced house in Trethomas was £172,000 over the last 12 complete months, from 19 sales.
Are house prices going up in Trethomas?
Yes. In Caerphilly, prices rose by 4.2% in the year to July 2026, according to the UK House Price Index.
How many homes sell in Trethomas each year?
33 homes sold in Trethomas in the last 12 complete months, and 61 over the last 24 months.
Where do these prices come from?
Every sale comes from the Price Paid Data of HM Land Registry, which records the price of every home sold in England and Wales since 1995. We keep standard sales at market value of houses and flats (category A) and leave out repossessions, transfers to companies and other special sales. Price changes over a year come from the UK House Price Index, published by HM Land Registry with the Office for National Statistics.
More prices near Trethomas
Part of
Places near Trethomas
- Bedwas155 sales
- Machen93 sales
- Cwmfelinfach34 sales
- Caerphilly1,478 sales
- Wattsville26 sales
- Llanbradach94 sales
- Ynysddu29 sales
- Cross Keys58 sales
- Pontywaun19 sales
- Lisvane212 sales
Postcode districts nearby
- Postcode district CF831,477 sales
- Postcode district NP11874 sales
- Postcode district CF82463 sales
- Postcode district CF142,103 sales
Local authorities covering Trethomas
- Caerphilly4,266 sales
Other places in Wales
- Llanymynech119 sales
- Knighton98 sales
- Cardiff9,075 sales
Region
Sales registered up to August 2026. Read how we calculate the figures.