Feb 07, 2023 by HM

House prices in Sully (CF64 5)

This article reveals price per square metre data and various charts to help you understand current housing market in Sully (CF64 5).

Price per square metre

Knowing the average house price in Sully 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. 5, Bassett Road, Sully, Penarth, sold for £295,000 on Sep-2023. Given the internal area of 75 square metres, the price per sqm is £3,933.

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. £4,250-£4,500, £4,500-£4,750, £4,750-£5,000 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 136 sales in Sully (CF64 5) that took place in the last two years.

Distribution of £ per sqm for Sully (CF64 5)
Distribution of £ per sqm house prices in Sully

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 Sully (CF64 5). Of the 136 transactions, half were sold for between £2,980 and £4,570 per square metre. Notably, only 25% of properties that sold recently were valued at more than £4,570m2. 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 'CF64 5' is £3,710. The table below shows how 'CF64 5' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
CF64 1 Penarth £2,950m2 £3,440m2 £3,910m2
CF64 5 Sully £2,980m2 £3,710m2 £4,570m2
CF64 3 Penarth £3,380m2 £3,860m2 £4,400m2
CF64 4 Dinas Powys £3,000m2 £3,440m2 £3,840m2
CF64 2 Penarth £2,960m2 £3,400m2 £4,080m2

Will Sully 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 CF64 5 (Sully). 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 CF64 5 and the blue dots are the individual property sales that inform this trend.

Price per square metre in Sully (CF64 5) over time
House price trends for Sully

Hover on any blue dot to see details of specific sales

Disclaimer: The data provided throughout this website about Sully 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 Sully data or any other data I am given.

Price map for Sully

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 Sully. 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 Sully
House price heatmap for Sully

Street level data

Street Avg size Avg £/m2 Recent sales
Hayes Road, Sully, CF64 5Q 78m2 £2,487 57
Arlington Road, Sully, CF64 5T 61m2 £3,637 17
Althorp Drive, Sully, CF64 5F 74m2 £3,873 13
Porlock Drive, Sully, CF64 5Q 77m2 £4,080 13
Minehead Avenue, Sully, CF64 5T 101m2 £3,046 10
Bassett Road, Sully, CF64 5H 96m2 £3,901 9
Wimborne Crescent, Sully, CF64 5S 84m2 £2,830 9
Cosmeston Drive, Sully, CF64 5F 107m2 £3,915 8

Search for your street here.

Raw data

Our analysis of Sully 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
23, Arlington Rd, Sully, Penarth £132,500
42 3,154
5, Bassett Rd, Sully, Penarth £295,000
75 3,933
3, Maillards Haven, Sully, Penarth £885,000
126 7,023

See the entire list of all sales in Sully (CF64 5) 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.