Detached
£258,833
18% above the Trewalchmai average
66.7% of sales
What is the average house price in Trewalchmai? £219,350
The average house price in Trewalchmai is £219,350, based on 10 homes sold in the 12 months to May 2026. Prices are down 1.9% (£4,275) on a year earlier.
- 1 year change
- −1.9%
- Sold in 12 months
- 10
- Data up to
- May 2026
Sold prices from HM Land Registry, not asking prices. How we calculate this
How much does each type of property cost in Trewalchmai?
Average sold price by property type, and each type's share of recent sales.
Semi-detached
£177,000
19% below the Trewalchmai average
5.6% of sales
Terraced
£154,500
30% below the Trewalchmai average
27.8% of sales
Are house prices in Trewalchmai going up or down?
House prices in Trewalchmai are falling: down 1.9% (£4,275) over the past year. Over the past 10 years, prices are up 38.3% (£60,719).
Past 12 months
−1.9%
−£4,275From £223,625 to £219,350
£234,454£199,833
Past 10 years
+38.3%
+£60,719From £158,631 to £219,350
£242,454£119,500
Quick answers for Trewalchmai
8 key facts at a glance.
When did prices peak?
£550,000
Highest average, reached in October 2022
How many homes sold?
10
In the last 12 months+25.0% year on year
What sells most often?
Detached houses
66.7% of recent sales
What is the most common price range?
£100k - £150k
50.0% of sales
How many people live in Trewalchmai?
996
380 people per square mile · High (Census 2021)
Population density is High, on a scale from Very Low to Very High.
Usual residents, including communal establishments.
How many households are in Trewalchmai?
409
156 households per square mile · High (Census 2021)
Household density is High, on a scale from Very Low to Very High.
Occupied households, not communal establishments.
How much green space is in Trewalchmai?
36 m² per resident
More green space per resident than 59% of areas in England and Wales. That's about 5 football pitches for every 1,000 residents.
0.5% of the area · 0 public parks. Parks, playing fields, allotments and other public green space, not counting golf courses. Contains OS data © Crown copyright and database right 2026.
How does Trewalchmai rank?
32nd most expensive area of Ynys Môn / Isle of Anglesey.
Compared with 40 areas
What are the most expensive homes sold in Trewalchmai?
The highest recorded sale prices in Trewalchmai, from HM Land Registry.
How do house prices in Trewalchmai compare with nearby areas?
Trewalchmai compared with the 6 nearest other areas in Ynys Môn / Isle of Anglesey.
Trewalchmai vs Bryngwran
- Trewalchmai
- £219,350
- Bryngwran
- £233,477+£14,127
Open comparison
Trewalchmai vs Bodffordd
- Trewalchmai
- £219,350
- Bodffordd
- £255,631+£36,281
Open comparison
Trewalchmai vs Llangristiolus
- Trewalchmai
- £219,350
- Llangristiolus
- £240,687+£21,337
Open comparison
Trewalchmai vs Aberffraw
- Trewalchmai
- £219,350
- Aberffraw
- £208,500−£10,850
Open comparison
Trewalchmai vs Llanfaelog
- Trewalchmai
- £219,350
- Llanfaelog
- £371,883+£152,533
Open comparison
Trewalchmai vs Bodorgan
- Trewalchmai
- £219,350
- Bodorgan
- £204,375−£14,975
Open comparison
Thinking of buying in Trewalchmai?
There's a lot to think about. Whether it's a home to live in or a buy-to-let, our free checklist walks you through what to check before you make an offer.
What to check before you buyWhere does this data come from?
Price information is from HM Land Registry, location boundaries are from OpenStreetMap, and households and population are from Nomis Census 2021 postcode estimates (21 March 2021). Parks and green space are from OS Open Greenspace. Contains OS data © Crown copyright and database right 2026.
Last updated 7 October 2026 at 02:04 with the latest Land Registry data (May 2026). The Trewalchmai dataset covers 39 postcodes.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.