Sold house prices in Trethomas

A locality in Caerphilly.

Sold house prices in Trethomas have an overall average of £149,209, based on all 413 residential sales on record — drawn from every recorded UK house sale.

Trethomas market analysis

Medians over the most recent 12 months of all UK property sales (to July 2026). Median is used, not mean — it isn't skewed by the odd very-high sale.

Across Trethomas, the median sold price over the 12 months to July 2026 was £205,000 — it rose 24.8% on the year before. That reflects 35 recorded sales. Detached homes are the priciest at a median of £280,000, while flat/maisonette homes are the most affordable at £115,000. Over the past year, semi-detached homes moved the most (+29.2%). New-build homes were 0% of recent sales, a share that is steady.

These figures track the median of prices actually paid, not a like-for-like index. A move can reflect a change in what sold — more new homes, or a different mix of house types and sizes — as much as any change in what a given home is worth.

£205,000
Median sold price (12m)
+24.8%
Year-on-year change
35
Sales in last 12 months
£149,209
Average, all time (2015–2026)

Median sold price by year

2021202220242025£149k£185k

New-build share of sales

0%20220%20230%20240%2025

Median price by property type (last 12 months)

TypeMedian12-month changeSales
Terraced£171,000+6.2%22
Semi-detached£232,500+29.2%8
Detached£280,000-11.1%3
Flat/Maisonette£115,000+0%1
Other£217,500—1

Change compares the median for the last 12 months with the 12 months before.

Development activity

New-build homes were 0% of sales in the latest year, and the share is ▬ steady over the period — a marker of how much new housing is being built here (not a price forecast). See the new-build chart above.

How these figures are calculated. Year-on-year change compares the median sold price over the most recent 12 months of data with the 12 months before it. We use the median, not the average, so a few unusually high or low sales don't distort it. Because HM Land Registry data lags — sales take time to be registered — the most recent month or two are provisional and tend to revise upward. Figures track the mix of what actually sold, so they are not a like-for-like index. The same method is used across this site, so an area's figure here matches its ranking in investment trends.

📈 See investment trends across Caerphilly →

Recent sales in Trethomas

£190,000
79, JAMES STREET, CAERPHILLY, CF83 8FY
TerracedJul 2026
£35,000
8, STANDARD STREET, CAERPHILLY, CF83 8DE
TerracedJul 2026
£220,000
3, CENTRAL HOUSES, CAERPHILLY, CF83 8BS
TerracedJun 2026
£230,000
35, NEWPORT ROAD, CAERPHILLY, CF83 8DA
Semi-detachedMay 2026
£210,000
52, WILLIAM STREET, CAERPHILLY, CF83 8FX
TerracedMay 2026
£205,000
2, CENTRAL HOUSES, CAERPHILLY, CF83 8BS
TerracedApr 2026
£170,000
10, ELM GROVE, CAERPHILLY, CF83 8GT
TerracedApr 2026
£149,000
12, CORONATION STREET, CAERPHILLY, CF83 8DL
TerracedApr 2026
£235,000
2, LLANFABON DRIVE, CAERPHILLY, CF83 8GJ
Semi-detachedMar 2026
£157,500
10, THE AVENUE, CAERPHILLY, CF83 8BW
TerracedMar 2026
£188,000
42, MARY STREET, CAERPHILLY, CF83 8HN
TerracedMar 2026
£170,000
44, MARY STREET, CAERPHILLY, CF83 8HN
TerracedFeb 2026
£155,000
15, CORONATION STREET, CAERPHILLY, CF83 8DL
TerracedFeb 2026
£147,500
11, LOWER GLYN GWYN STREET, CAERPHILLY, CF83 8GA
TerracedFeb 2026
£132,000
4, WILLIAM STREET, CAERPHILLY, CF83 8DQ
TerracedJan 2026
£189,000
19, REDBROOK AVENUE, CAERPHILLY, CF83 8DB
Semi-detachedJan 2026
£205,000
26, WILLIAM STREET, CAERPHILLY, CF83 8DQ
TerracedDec 2025
£172,000
66, JAMES STREET, CAERPHILLY, CF83 8FY
TerracedDec 2025
£235,000
14, LOWER GLYN GWYN STREET, CAERPHILLY, CF83 8GA
Semi-detachedDec 2025
£220,000
11, TYN Y WERN TERRACE, CAERPHILLY, CF83 8FP
TerracedDec 2025
£620,000
39, NEWPORT ROAD, CAERPHILLY, CF83 8DA
DetachedDec 2025
£217,500
FIRST FLOOR FLAT, CHARLIES CAFE, NEWPORT ROAD, CAERPHILLY, CF83 8BY
OtherDec 2025
£195,000
28, HAZEL GROVE, CAERPHILLY, CF83 8GU
Semi-detachedNov 2025
£255,000
53, WILLIAM STREET, CAERPHILLY, CF83 8FX
DetachedNov 2025

Streets in Trethomas

WILLIAM STREET
45 sales · avg £141,537
MARY STREET
37 sales · avg £128,428
NEWPORT ROAD
30 sales · avg £209,400
LLANFABON DRIVE
29 sales · avg £136,686
THOMAS STREET
27 sales · avg £126,320
JAMES STREET
24 sales · avg £141,642
CORONATION STREET
24 sales · avg £124,852
STANDARD STREET
20 sales · avg £145,123
UPPER GLYN GWYN STREET
15 sales · avg £137,033
NAVIGATION STREET
15 sales · avg £138,263
BRYN Y FRAN AVENUE
15 sales · avg £162,050
HAZEL GROVE
13 sales · avg £157,769
TYN Y WERN TERRACE
11 sales · avg £217,818
LOWER GLYN GWYN STREET
11 sales · avg £172,959
THE BRYN
10 sales · avg £162,600
THE AVENUE
10 sales · avg £137,130
CLOS PANTGLAS
10 sales · avg £119,175
REDBROOK AVENUE
8 sales · avg £158,625
ELM GROVE
7 sales · avg £156,226
CENTRAL HOUSES
7 sales · avg £156,136
BEVAN CLOSE
7 sales · avg £89,143
YSTRAD BUILDINGS
6 sales · avg £156,167
ST MARGARETS CLOSE
6 sales · avg £260,833
PANTGLAS VIEW
5 sales · avg £130,320
BRYNYFRAN AVENUE
5 sales · avg £110,100
BRYN CLOSE
5 sales · avg £132,600
BEVAN RISE
4 sales · avg £95,375
ASH GROVE
4 sales · avg £145,000
TYN Y WERN VILLAS
3 sales · avg £258,333
STANDARD VILLAS
3 sales · avg £139,667

Estate agents in Trethomas

Estate agency businesses registered in Trethomas (Companies House).

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