Cymru Wales / South Glamorgan / Cardiff
Thornhill£320,883
Average price, last 12 months
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The average house price in Thornhill is £320,883 over the last 12 months. Over the past year prices rose 9.9%.
Cymru Wales / South Glamorgan / Cardiff
Thornhill£320,883
Average price, last 12 months
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Boundary outlines for this location, using the same colours as the rest of the page.
With £330,000 you could afford the average semi-detached house in Thornhill.
Flats
£178,714
In budget
Terraced
£258,132
In budget
Semi-detached
£292,463
In budget
Detached
£459,225
£129k short
Average sale price by type of home over the last 12 months, from HM Land Registry. These are averages, so cheaper homes of each type do sell.
With a 10% deposit, a 25-year mortgage at 4.5% on the average home in Thornhill costs £1,605 a month.
£1,605
a month
A repayment mortgage on each location's average sale price over the last 12 months. The rate is an example, not a quote, so check current deals. Many lenders cap borrowing at about 4.5 times income.
Average sale price by property type over the last 12 months.
Share of last 12 months' sales by property type.
Mostly terraced houses
Thornhill has 5 public parks among 10 green space sites. Green space covers 15.9% of the area: about 39 m² per resident, or 5.4 football pitches for every 1,000 people. More green space per resident than 63% of areas in England and Wales, where the typical area has 31 m².
15.9%
of the land is green space
39 m² per resident, or 5.4 football pitches for every 1,000 residents
5 public parks
Each grid is the location's land, one square per 1%. Green space from OS Open Greenspace, not counting golf courses; Contains OS data © Crown copyright and database right 2026.
Thornhill has about 29 residents for every football pitch of land, or 10,634 people per square mile, which counts as very high density.
Census 2021 population divided by land area. A football pitch is about 7,140 m² (105 m × 68 m).
Rolling 12-month average for each location, last 10 years. Gaps mean no sales were recorded that month.
Prices in Thornhill were down on a year earlier in 26 months of the 108 since October 2017. They are now up 9.9% on a year earlier.
Each stripe is one month: the rolling 12-month average against the same month a year earlier, since October 2017. Falls are hatched as well as red.
Monthly sales volume for each location, last 10 years.
Every measure side by side. The highest value in each row is highlighted.
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£320,883
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
+£29,013
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
+£98,435
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
105
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
278
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
3,078
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
4,790 per sq mi · Very High
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
6,833
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
10,634 per sq mi · Very High
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
39 m² per resident · more than 63% of areas
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
15.9%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
5
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
21 per 1,000 · Very Low
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
−13.4%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
2.9 per 1,000
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
JAN 2023 · £422,166
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£200k – £300k · 43.8%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£459,225
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£292,463
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£258,132
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
£178,714
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
23.1%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
29.8%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
40.5%
Thornhill
Cymru Wales / South Glamorgan / Cardiff / Thornhill
6.6%
| Metric | Thornhill Cymru Wales / South Glamorgan / Cardiff / Thornhill |
|---|---|
| Latest 12-month average | £320,883 |
| Change over 1 year | +£29,013 |
| Change over ~10 years | +£98,435 |
| Homes sold (last 12 months) | 105 |
| Number of postcodes | 278 |
| Households (Census 2021) | 3,078 |
| Household density | 4,790 per sq mi · Very High |
| Population (Census 2021) | 6,833 |
| Population density | 10,634 per sq mi · Very High |
| Green space per resident | 39 m² per resident · more than 63% of areas |
| Green space share of area | 15.9% |
| Public parks | 5 |
| Crime rate (per 1,000 residents) | 21 per 1,000 · Very Low |
| Crime vs previous 12 months | −13.4% |
| Anti-social behaviour per 1,000 residents | 2.9 per 1,000 |
| Peak month | JAN 2023 · £422,166 |
| Most common price band | £200k – £300k · 43.8% |
| Detached average | £459,225 |
| Semi-detached average | £292,463 |
| Terraced average | £258,132 |
| Flats average | £178,714 |
| Detached share of sales | 23.1% |
| Semi-detached share of sales | 29.8% |
| Terraced share of sales | 40.5% |
| Flats share of sales | 6.6% |
Sold prices from HM Land Registry. Households and population from Census 2021. Green space from OS Open Greenspace, not counting golf courses; Contains OS data © Crown copyright and database right 2026. Crime is police-recorded crime from police.uk, per 1,000 residents, over the latest 12 published months; anti-social behaviour is counted separately. Contains public sector information licensed under the Open Government Licence v3.0. Source: police.uk.
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 buyContains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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