House prices in CF3 4 (Llanrumney)

This article reveals price per square foot data and various charts to help you understand current housing market in 'CF3 4' (Llanrumney, St Mellons) - statistics were last calculated on 30 August 2024.

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Defining 'CF3 4'

This analysis is limited to properties whose postcode starts with "CF3 4", 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 Llanrumney.

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

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

Price per square foot

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

£ per sqft = price ÷ internal area

E.g. 40, Cheddar Crescent, Llanrumney, St Mellons, sold for £177,000 on Jun-2024. Given the internal area of 925 square feet, the price per sqft is £191.

England & Wales have been officially metric for many decades. Convert this site to square meters.

The chart below is called a histogram, it helps you see the distribution of this house price per sqft data. To make this chart we put the sales data into a series of £ per sqft 'buckets' (e.g. £218-£232, £232-£246, £246-£260 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 96 sales in Llanrumney (CF3 4) that took place in the last two years.

Generate a custom chart like the one above but based on your own criteria.

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 Llanrumney (CF3 4). Of the 96 transactions, half were sold for between £196 and £259 per square foot. The median, or 'middle', price per square foot in 'CF3 4' is £226. Notably, only 25% of properties that sold recently were valued at more than £259 sqft. For anything to be valued more than this means it has to be more desireable than the clear majority of homes.

Price map for Llanrumney, St Mellons

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 St Mellons. 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.

House price heatmap for Llanrumney, St Mellons

Comparison with neighbouring postcode sectors

The table below shows how 'CF3 4' compares to neighbouring postcode sectors.

Postcode sector	Lower quartile	Middle quartile	Upper quartile
CF3 3 Rumney	£211 sqft	£246 sqft	£298 sqft
CF3 2 Marshfield	£276 sqft	£316 sqft	£365 sqft
CF3 5 Llanrumney	£207 sqft	£235 sqft	£266 sqft
CF3 6 Old St Mellons	£302 sqft	£347 sqft	£373 sqft
CF3 1 Rumney	£186 sqft	£204 sqft	£249 sqft
CF3 0 St Mellons	£252 sqft	£291 sqft	£322 sqft
CF3 4 Llanrumney	£196 sqft	£226 sqft	£259 sqft

Will St Mellons 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 CF3 4 (Llanrumney) compared with both the wider area CF3 and inflation (CPIH from the Office of National Statistics). The dashed trend lines in the chart show the average over time.

Download time series data as CSV (paying users only).

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.

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 St Mellons 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 St Mellons 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 £sqft	Recent sales
Ridgeway Road, Llanrumney, CF3 4A	914 sqft	£214	25
Kennerleigh Road, Llanrumney, CF3 4B	731 sqft	£171	15
Newport Road, Llanrumney, CF3 4F	0 sqft	£244	11
Bideford Road, Llanrumney, CF3 4E	904 sqft	£227	10
Ball Road, Llanrumney, CF3 4B	0 sqft	£250	10
Llanrumney Avenue, Llanrumney, CF3 4E	904 sqft	£215	9
Cranleigh Rise, Llanrumney, CF3 4A	667 sqft	£183	8
Llanrumney Avenue, Llanrumney, CF3 4D	957 sqft	£228	8

Search for your street here.

Raw data

Our analysis of Llanrumney 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	sqft	£/sqft
40, Cheddar Crescent, Llanrumney, St Mellons	£177,000 Jun-2024	925	191
16, Claremont Crescent, Llanrumney, St Mellons	£285,000 May-2024	990	287
4, Blagdon Close, Llanrumney, St Mellons	£218,000 May-2024	990	220

See the entire list of all sales in Llanrumney (CF3 4) here.