How do I compare house prices between areas?

Where is this area?

Boundary outlines for this location, using the same colours as the rest of the page.

What can I buy with my budget in Old St. Mellons?

With £350,000 you could afford the average semi-detached house in Old St. Mellons.

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.

How much would a mortgage cost in Old St. Mellons?

With a 10% deposit, a 25-year mortgage at 4.5% on the average home in Old St. Mellons costs £1,724 a month.

• Old St. Mellons

  £1,724

  a month

  Average price

  £344,566

  Deposit

  £34,457

  Mortgage

  £310,109

  Salary needed at 4.5×

  £68,913

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.

How green is Old St. Mellons?

Old St. Mellons has 2 public parks among 15 green space sites. Green space covers 4.2% of the area: about 32 m² per resident, or 4.4 football pitches for every 1,000 people. More green space per resident than 52% of areas in England and Wales, where the typical area has 31 m².

• Old St. Mellons

  4.2%

  of the land is green space
  32 m² per resident, or 4.4 football pitches for every 1,000 residents
  2 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.

How crowded is Old St. Mellons?

Old St. Mellons has about 9.6 residents for every football pitch of land, or 3,478 people per square mile, which counts as very high density.

Old St. Mellons

9.6 people per football pitch of land · 3,478 per square mile

Census 2021 population divided by land area. A football pitch is about 7,140 m² (105 m × 68 m).

How have average house prices moved?

Rolling 12-month average for each location, last 10 years. Gaps mean no sales were recorded that month.

When have prices risen and fallen in Old St. Mellons?

Prices in Old St. Mellons were down on a year earlier in 37 months of the 108 since October 2017. They are now up 11.1% 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.

How many homes were sold?

Monthly sales volume for each location, last 10 years.

How do all the numbers compare?

Every measure side by side. The highest value in each row is highlighted.

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.