House prices in CF5 6 (St Fagans)

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

Defining 'CF5 6'

This analysis is limited to properties whose postcode starts with "CF5 6", this is also called the postcode sector. It is shown in red on the map above. There are no official names for postcode sectors so I've just labelled it St Fagans.

You can click on the map labels to change to a neighbouring sector, or you can enter a different postcode sector (e.g. CM23 4) below.

FYI, a postcode sector is the full postcode without the last two letters.

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. 27, Picca Close, St Fagans, Cardiff, sold for £310,000 on Jan-2024. Given the internal area of 94 square metres, the price per sqm is £3,297.

England & Wales have been officially metric since 1965. However house price per square foot is prefered by some estate agents and those of sufficiently advanced age ;-) They may want to convert square meters 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 126 sales in St Fagans (CF5 6) that took place in the last two years.

Distribution of £ per sqm for St Fagans, Cardiff
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.

The spread of prices will give you a feel of the typical range to expect in St Fagans (CF5 6). Of the 126 transactions, half were sold for between £3,390 and £4,000 per square metre. The median, or 'middle', price per square metre in 'CF5 6' is £3,680. Notably, only 25% of properties that sold recently were valued at more than £4,000 sqm. For anything to be valued more than this means it has to be more desireable than the clear majority of homes.

Price map for St Fagans, Cardiff

Do have a look at the interactive price map I created. I find it useful and I am sure it will help you in exploring Cardiff. 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.

Property price heatmap for St Fagans
House price heatmap for St Fagans, Cardiff

Comparison with neighbouring postcode sectors

The table below shows how 'CF5 6' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
CF5 1 Cardiff £2,960 sqm £3,440 sqm £3,870 sqm
CF5 6 St Fagans £3,390 sqm £3,680 sqm £4,000 sqm
CF5 2 Cardiff £3,300 sqm £3,860 sqm £4,290 sqm
CF5 4 Cardiff £2,110 sqm £2,550 sqm £3,160 sqm
CF5 3 Cardiff £2,340 sqm £2,630 sqm £3,080 sqm
CF5 5 Cardiff £2,040 sqm £2,420 sqm £2,790 sqm

Will Cardiff 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 chart below for CF5 6 (St Fagans) compared with both the wider area CF5 and inflation (CPIH from the Office of National Statistics). The dashed trend lines in the chart show the average over time.

Historic price per square metre in St Fagans,Cardiff
House price trends for St Fagans

For the most recent sales activity, rather than a summarized average, it is better to see the underlying data. This is shown in the chart below, where blue dots represent individual sales, click on them to see details. If there is an obvious trend you should be able to spot it here amid the noise from outliers.

Most recent CF5 6 sales
Recent trends for St Fagans

Data from Land Registry comes in gradually over time. I update it every month but it takes about 5 months for the majority of sales for Cardiff to be recorded. Disclaimer: I do not verify and cannot guarantee the accuracy of any data shown. Outliers exist in the data, typically these are where the EPC registry records the internal area incorrectly, sometimes although very rarely the Land Registry price paid data can be wrong. The data provided throughout this website about Cardiff 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.

Street level data

Street Avg size Avg £sqm Recent sales
Picca Close, St Fagans, CF5 6X 108 sqm £3,066 25
Trem Y Coed, St Fagans, CF5 6F 109 sqm £2,961 22
Harlech Road, St Fagans, CF5 6X 112 sqm £3,164 15
Gwern Close, St Fagans, CF5 6X 90 sqm £3,121 12
Cae Newydd, St Fagans, CF5 6F 110 sqm £4,081 11
Lon Y Goetre Fach, St Fagans, CF5 6F 99 sqm £2,914 8
Burdons Close, St Fagans, CF5 6F 111 sqm £3,404 8
Goldsland Walk, St Fagans, CF5 6F 122 sqm £3,918 8

Search for your street here.

New build activity

Street Avg size Avg £sqm New build sales
Trem Y Rhyd, St Fagans, CF5 6F 111 sqm £3,655 11

Trem Y Rhyd, St Fagans, CF5 6F has seen 11 new build sales in the last 4 years (average price £469,826). These new build homes typically have an internal area of 111 sqm, with an average price of £3,655 sqm. This £sqm average is £-25 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 sqm £/sqm
27, Picca Close, St Fagans, Cardiff £310,000
94 3,297
8, Trem Y Rhyd, St Fagans, Cardiff £310,000
85 3,647
6, Heol Llanbedr, St Fagans, Cardiff £190,000
70 2,714

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


I created HouseMetric because I wanted to see this data and analysis myself, I also wanted to teach myself to build a website. Please give me feedback or spread the word about it. I'm constantly tinkering and adding more stuff to it.