House prices in Trethomas
Median value — July 2026
£192,643
Modelled from 588 properties Stede tracks in Trethomas
Market snapshot
£192,643
Median value
£198,272
Average value
27
Sales in the last 12 months
+4%
Change over the past year
Value over time
- Modelled value
Modelled month by month from the UK House Price Index, averaged across every property type Stede tracks here.
View as a table
| Year | Modelled value |
|---|---|
| 2000 | £43,493 |
| 2001 | £45,790 |
| 2002 | £57,603 |
| 2003 | £74,126 |
| 2004 | £95,214 |
| 2005 | £104,065 |
| 2006 | £109,001 |
| 2007 | £114,109 |
| 2008 | £102,172 |
| 2009 | £100,416 |
| 2010 | £97,555 |
| 2011 | £103,013 |
| 2012 | £98,799 |
| 2013 | £100,351 |
| 2014 | £107,928 |
| 2015 | £110,053 |
| 2016 | £111,511 |
| 2017 | £119,847 |
| 2018 | £129,308 |
| 2019 | £131,636 |
| 2020 | £141,794 |
| 2021 | £159,428 |
| 2022 | £179,400 |
| 2023 | £177,019 |
| 2024 | £185,309 |
| 2025 | £187,117 |
| 2026 | £192,643 |
Property types
- Mid-terrace house55%£183,949
- Semi-detached house33%£207,715
- Detached house6%£282,658
- Flat / Maisonette5%£118,548
- Property2%£106,878
Recent sales
- 43 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GW£205,000 · 2026£205,000
- 79 James Street, Trethomas, Caerphilly, CF83 8FY£190,000 · 2026£190,000
- 8 Standard Street, Trethomas, Caerphilly, CF83 8DE£35,000 · 2026£35,000
- 3 Central Houses, Trethomas, Caerphilly, CF83 8BS£220,000 · 2026£219,000
- 35 Newport Road, Trethomas, Caerphilly, CF83 8DA£230,000 · 2026£229,000
- 52 William Street, Trethomas, Caerphilly, CF83 8FX£210,000 · 2026£209,000
- 2 Central Houses, Trethomas, Caerphilly, CF83 8BS£200,000 · 2026£199,000
- 10 Elm Grove, Trethomas, Caerphilly, CF83 8GT£170,000 · 2026£169,000
Addresses in Trethomas
- 83 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GX£139,950 · 2019£211,000
- 84 James Street, Trethomas, Caerphilly, CF83 8FY£103,000 · 2019£156,000
- 84 William Street, Trethomas, Caerphilly, CF83 8FX£175,000 · 2025£182,000
- 85 James Street, Trethomas, Caerphilly, CF83 8FY£72,000 · 2012£144,000
- 86 James Street, Trethomas, Caerphilly, CF83 8FY£134,950 · 2024£147,000
- 86 William Street, Trethomas, Caerphilly, CF83 8FX£107,500 · 2006£186,000
- 87 James Street, Trethomas, Caerphilly, CF83 8FY£149,000 · 2021£181,000
- 88 James Street, Trethomas, Caerphilly, CF83 8FY£105,000 · 2017£172,000
- 89 James Street, Trethomas, Caerphilly, CF83 8FY£180,000 · 2022£213,000
- 8A, Newport Road, Trethomas, Caerphilly, CF83 8BY£155,000 · 2002£611,000
- 9 Ash Grove, Trethomas, Caerphilly, CF83 8BP£95,000 · 2012£189,000
- 9 Bevan Close, Trethomas, Caerphilly, CF83 8GR£116,000 · 2023£119,000
- 9 Bevan Rise, Trethomas, Caerphilly, CF83 8GQ£95,500 · 2019£125,000
- 9 Clos Pantglas, Trethomas, Caerphilly, CF83 8BX£39,000 · 1999£190,000
- 9 Coronation Street, Trethomas, Caerphilly, CF83 8DL£42,950 · 2000£205,000
- 9 Elm Grove, Trethomas, Caerphilly, CF83 8GT£218,000 · 2023£248,000
- 9 Hazel Grove, Trethomas, Caerphilly, CF83 8GU£168,500 · 2019£254,000
- 9 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GJ£125,000 · 2017£203,000
- 9 Mary Street, Trethomas, Caerphilly, CF83 8HN£124,950 · 2017£211,000
- 9 Navigation Street, Trethomas, Caerphilly, Rhymney Valley, Mid Glamorgan, CF83 8DJ£36,000 · 2000£175,000
- 9 Newport Road, Trethomas, Caerphilly, CF83 8BY£140,000 · 2016£233,000
- 9 Pantglas View, Trethomas, Caerphilly, CF83 8BL£105,000 · 2011£204,000
- 9 Standard Street, Trethomas, Caerphilly, CF83 8DE£67,000 · 2000£325,000
- 9 The Avenue, Trethomas, Caerphilly, CF83 8BW£195,000 · 2022£234,000
- 9 Thomas Street, Trethomas, Caerphilly, CF83 8DP£135,000 · 2022£160,000
- 9 Tyn Y Wern Terrace, Trethomas, Caerphilly, CF83 8FP£160,000 · 2022£179,000
- 9 William Street, Trethomas, Caerphilly, CF83 8DQ£161,000 · 2022£173,000
- 90 James Street, Trethomas, Caerphilly, CF83 8FY£160,000 · 2022£190,000
- 90 William Street, Trethomas, Caerphilly, CF83 8FX£110,000 · 2019£170,000
- 91 James Street, Trethomas, Caerphilly, CF83 8FY£182,500 · 2024£194,000
- 91 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GX£70,000 · 2010£136,000
- 92 James Street, Trethomas, Caerphilly, Rhymney Valley, Mid Glamorgan, CF83 8FY£166,000 · 2021£202,000
- 92 William Street, Trethomas, Caerphilly, CF83 8FX£140,000 · 2021£173,000
- 93 Bryn Dolwen, Trethomas, Caerphilly£125,000 · 2007£205,000
- 93 James Street, Trethomas, Caerphilly, CF83 8FY£122,000 · 2023£134,000
- 93 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GX£70,000 · 2010£136,000
- 94 William Street, Trethomas, Caerphilly, CF83 8FX£121,000 · 2016£211,000
- 95 James Street, Trethomas, Caerphilly, CF83 8FY£103,000 · 2006£176,000
- 96 James Street, Trethomas, Caerphilly, CF83 8FY£107,950 · 2015£192,000
- 96 William Street, Trethomas, Caerphilly, CF83 8FX£57,000 · 2003£197,000
- 97 James Street, Trethomas, Caerphilly, CF83 8FY£110,000 · 2014£200,000
- 97 Llanfabon Drive, Trethomas, Caerphilly, CF83 8GX£109,950 · 2017£181,000
- Apex House, 59, Mailboxs Ltd - Small Business Solutions, William Street, Trethomas, Caerphilly, CF83 8FX£12,800 · 1999£56,000
- Campo Ferria, Newport Road, Trethomas, Caerphilly, CF83 8BR£82,000 · 2021£107,000
- Central Buildings, 7, Newport Road, Trethomas, Caerphilly, CF83 8BU£125,000 · 2006£220,000
- Central Buildings, Flat 3, Trethomas, Caerphilly, CF83 8BU£145,000 · 2008£249,000
- Central Buildings, Flat 4, Newport Road, Trethomas, Caerphilly, CF83 8BU£36,000 · 2002£154,000
- Chapel Court, 2, Navigation Street, Trethomas, Caerphilly, CF83 8FR£120,000 · 2015£213,000
- Chapel Court, 3, Navigation Street, Trethomas, Caerphilly, CF83 8FR£140,000 · 2012£279,000
- Charlies Cafe, First Floor Flat, Newport Road, Trethomas, Caerphilly, CF83 8BY£217,500 · 2025£224,000
About this area
Trethomas, in Caerphilly, is a village. Stede can model 588 properties there, from HM Land Registry Price Paid Data and the UK House Price Index.
As of July 2026, Trethomas has a median estimated value of £192,643 and an average of £198,272.
Modelled values in Trethomas are +4% over the past year and +25% over five years.
The market here is mostly mid-terrace houses, which make up 55% of the properties Stede tracks in Trethomas.
27 sales were recorded in Trethomas over the past 12 months.
Common questions
What is the average house price in Trethomas?
As of July 2026, the average estimated value is £198,272 and the median is £192,643 across 588 properties Stede tracks in Trethomas. This is not a formal market valuation.
Are house prices in Trethomas going up or down?
Modelled values in Trethomas are +4% over the past year and +25% over five years, based on the UK House Price Index.
What types of property are in Trethomas?
55% of the properties Stede tracks in Trethomas are mid-terrace houses. semi-detached houses are next most common, at 33%.
How many properties are in Trethomas?
Stede can model 588 properties in Trethomas, with 27 recorded sales in the past 12 months.
How does Stede calculate house prices for Trethomas?
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources used for every individual property valuation on Stede. Full detail is on the methodology page.
How we calculate this
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources behind every individual property valuation on Stede.
Read the full methodology and data sources →