Feb 07, 2023 by HM

House prices in St Fagans (CF5 6)

This article reveals price per square metre data and various charts to help you understand current housing market in St Fagans (CF5 6).

Price per square metre

Knowing the average house price in St Fagans 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. 18, Harlech Road, St Fagans, Cardiff, sold for £435,000 on Aug-2023. Given the internal area of 125 square metres, the price per sqm is £3,480.

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 143 sales in St Fagans (CF5 6) that took place in the last two years.

Distribution of £ per sqm for St Fagans (CF5 6)
Distribution of £ per sqm house prices in St Fagans

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 St Fagans (CF5 6). Of the 143 transactions, half were sold for between £3,320 and £3,970 per square metre. Notably, only 25% of properties that sold recently were valued at more than £3,970m2. 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 'CF5 6' is £3,660. The table below shows how 'CF5 6' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
CF5 2 Llandaff £3,270m2 £3,840m2 £4,290m2
CF5 4 Ely £2,030m2 £2,410m2 £3,080m2
CF5 1 Canton £2,910m2 £3,340m2 £3,820m2
CF5 3 Fairwater £2,240m2 £2,550m2 £3,060m2
CF5 5 Ely £2,010m2 £2,420m2 £2,740m2
CF5 6 St Fagans £3,320m2 £3,660m2 £3,970m2

Will St Fagans 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 CF5 6 (St Fagans). 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 CF5 6 and the blue dots are the individual property sales that inform this trend.

Price per square metre in St Fagans (CF5 6) over time
House price trends for St Fagans

Hover on any blue dot to see details of specific sales

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

Price map for St Fagans

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 St Fagans. 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 St Fagans
House price heatmap for St Fagans

Street level data

Street Avg size Avg £/m2 Recent sales
Trem Y Coed, St Fagans, CF5 6F 110m2 £2,842 22
Harlech Road, St Fagans, CF5 6X 112m2 £3,100 14
Gwern Close, St Fagans, CF5 6X 89m2 £3,157 12
Burdons Close, St Fagans, CF5 6F 112m2 £3,348 12
Walston Road, St Fagans, CF5 6A 110m2 £3,082 8
Goldsland Walk, St Fagans, CF5 6F 122m2 £3,813 7
Michaelston Road, St Fagans, CF5 6F 69m2 £3,788 6
The Downs, St Fagans, CF5 6S 169m2 £3,403 6

Search for your street here.

New build activity

Street Avg size Avg £/m2 New build sales
Trem Y Rhyd, St Fagans, CF5 6F 111m2 £3,570 33
Picca Close, St Fagans, CF5 6X 109m2 £2,945 17
Cae Newydd, St Fagans, CF5 6F 110m2 £3,614 14
Lon Y Goetre Fach, St Fagans, CF5 6F 99m2 £2,924 9

Trem Y Rhyd, St Fagans, CF5 6F has seen 33 new build sales in the last 4 years (average price £445,017). These new build homes typically have an internal area of 111 m2, with an average price of £3,570 m2. This £sqm average is £-90 below the average for CF5 6. New builds typically command a £ per sqm premium. In the case of Trem Y Rhyd the premium seems not to exist. Without more info we can only speculate why this may be. Perhaps it may be greater density and smaller gardens, but this is just a guess.

Raw data

Our analysis of St Fagans 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
18, Harlech Rd, St Fagans, Cardiff £435,000
125 3,480
4, Wenvoe Close, St Fagans, Cardiff £477,000
130 3,669
The Old Station, Station Rd East, St Fagans, Cardiff £595,000
157 3,789

See the entire list of all sales in St Fagans (CF5 6) 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.