Feb 07, 2023 by HM

House prices in Rumney (CF3 3)

This article reveals price per square metre data and various charts to help you understand current housing market in Rumney (CF3 3).

Price per square metre

Knowing the average house price in Rumney is not much use. However, knowing average price per square metre can be quite useful. Price per sqm allows some comparison between properties of different size. We define price per square metre as the sold price divided by the internal area of a property:

£ per sqm = price ÷ internal area
E.g. 34, New Road, Rumney, St Mellons, sold for £245,000 on Oct-2023. Given the internal area of 102 square metres, the price per sqm is £2,401.

England & Wales have been officially metric for many decades. However house price per square foot is sometimes prefered by those of sufficiently advanced age. They may want to convert metres on this page to square feet.

The chart below is called a histogram, it helps you see the distribution of this house price per sqm data. To make this chart we put the sales data into a series of £ per sqm 'buckets' (e.g. £2,350-£2,500, £2,500-£2,650, £2,650-£2,800 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 118 sales in Rumney (CF3 3) that took place in the last two years.

Distribution of £ per sqm for Rumney (CF3 3)
Distribution of £ per sqm house prices in Rumney

You can see the spread of prices above. This is because although internal area is a key factor in determining valuation, it is not the only factor. Many factors other than size affect desirability; these factors could be condition, aspect, garden size, negotiating power of the vendor etc.

That said, the spread of prices will give you a feel of the typical range to expect in Rumney (CF3 3). Of the 118 transactions, half were sold for between £2,310 and £3,240 per square metre. Notably, only 25% of properties that sold recently were valued at more than £3,240m2. For anything to be valued more than this means it has to be more desireable than the clear majority of homes.

For the average, we calculate the 'median' or middle price. The median price per square metre in 'CF3 3' is £2,650. The table below shows how 'CF3 3' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
CF3 3 Rumney £2,310m2 £2,650m2 £3,240m2
CF3 1 St Mellons £1,890m2 £2,180m2 £2,540m2
CF3 2 Marshfield £2,780m2 £3,360m2 £3,890m2
CF3 5 Llanrumney £2,220m2 £2,530m2 £2,800m2
CF3 6 Old St Mellons £3,190m2 £3,620m2 £3,920m2
CF3 0 St Mellons £2,630m2 £3,110m2 £3,390m2
CF3 4 Llanrumney £1,990m2 £2,440m2 £2,810m2

Will Rumney house prices drop in 2024?

I cannot tell the future and don't believe anyone who says they can. I can however plot price trends - I have done this in the scatter plot below for CF3 3 (Rumney). From this one could infer a range of reasonable possible future price falls or rises. In the chart below, the red dashed line is the house price trend for CF3 3 and the blue dots are the individual property sales that inform this trend.

Price per square metre in Rumney (CF3 3) over time
House price trends for Rumney

Hover on any blue dot to see details of specific sales

Disclaimer: The data provided throughout this website about Rumney and any other area, is not financial advice. Any information provided does not and cannot ever take in to account the particular financial situation, objectives or property needs of either you or anyone reading this information. Furthermore, I cannot guarantee the accuracy of any data shown. This information is based on sold prices and internal area data provided by Land Registry and other third parties - I do not verify the accuracy of the Rumney data or any other data I am given.

Price map for Rumney

I've just finished coding the map I link to below. I find it useful and I am sure it will help you in exploring Rumney. You can zoom in all the way to individual properties and then all the way back out to see the whole country. The colours show the current estimated property values. I will explain more about the methodology and create a key next week.

Property price heatmap for Rumney
House price heatmap for Rumney

Street level data

Street Avg size Avg £/m2 Recent sales
Greenway Road, Rumney, CF3 3A 43m2 £2,390 15
New Road, Rumney, CF3 3B 80m2 £2,279 13
Wentloog Close, Rumney, CF3 3H 67m2 £2,238 12
Quarry Dale, Rumney, CF3 3B 88m2 £2,576 12
New Road, Rumney, CF3 3A 104m2 £2,637 11
Wentloog Road, Rumney, CF3 3E 70m2 £2,308 11
Greenway Road, Rumney, CF3 3P 88m2 £2,066 11
Tyr-y-sarn Road, Rumney, CF3 3B 96m2 £3,206 10

Search for your street here.

Raw data

Our analysis of Rumney is derived from what is essentially a big table of sold prices from Land Registry with added property size information. Below are three rows from this table to give you an idea.

Address Paid m2 £/m2
34, New Rd, Rumney, St Mellons £245,000
102 2,401
Flat 9 Downton Grange, New Rd, Rumney, St Mellons £76,000
72 1,055
Flat 6 Downton Grange, New Rd, Rumney, St Mellons £85,000
64 1,328

See the entire list of all sales in Rumney (CF3 3) here.


HouseMetric is a hobby, created out of a desire to see data and analysis not present on any free to use website. It is still a work in progress and I'll add more stuff in the near future.