Feb 07, 2023 by HM

House prices in Llanishen (CF14 5)

This article reveals price per square metre data and various charts to help you understand current housing market in Llanishen (CF14 5).

Price per square metre

Knowing the average house price in Llanishen 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. Apartment 47 Llys Isan, Ilex Close, Llanishen, Cardiff, sold for £430,000 on Sep-2023. Given the internal area of 94 square metres, the price per sqm is £4,574.

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. £2,800-£3,000, £3,000-£3,200, £3,200-£3,400 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 191 sales in Llanishen (CF14 5) that took place in the last two years.

Distribution of £ per sqm for Llanishen (CF14 5)
Distribution of £ per sqm house prices in Llanishen

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 Llanishen (CF14 5). Of the 191 transactions, half were sold for between £2,730 and £3,640 per square metre. Notably, only 25% of properties that sold recently were valued at more than £3,640m2. 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 'CF14 5' is £3,130. The table below shows how 'CF14 5' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
CF14 5 Llanishen £2,730m2 £3,130m2 £3,640m2
CF14 9 Thornhill £3,500m2 £3,960m2 £4,310m2
CF14 0 Lisvane £3,130m2 £3,820m2 £4,230m2
CF14 3 Gabalfa £2,620m2 £3,020m2 £3,510m2
CF14 1 Whitchurch £3,130m2 £3,590m2 £4,240m2
CF14 6 Rhiwbina £3,010m2 £3,910m2 £4,630m2
CF14 4 Heath £2,980m2 £3,490m2 £3,980m2
CF14 2 Whitchurch £2,680m2 £3,240m2 £3,800m2
CF14 7 Whitchurch £2,880m2 £3,440m2 £4,040m2

Will Llanishen 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 CF14 5 (Llanishen). 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 CF14 5 and the blue dots are the individual property sales that inform this trend.

Price per square metre in Llanishen (CF14 5) over time
House price trends for Llanishen

Hover on any blue dot to see details of specific sales

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

Price map for Llanishen

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 Llanishen. 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 Llanishen
House price heatmap for Llanishen

Street level data

Street Avg size Avg £/m2 Recent sales
Ilex Close, Llanishen, CF14 5D 67m2 £4,066 31
Tatham Road, Llanishen, CF14 5F 65m2 £2,783 30
Heol Hir, Llanishen, CF14 5A 70m2 £2,546 24
Fishguard Road, Llanishen, CF14 5P 98m2 £2,496 21
Ty Glas Road, Llanishen, CF14 5E 104m2 £3,902 19
Fidlas Road, Llanishen, CF14 5N 60m2 £2,569 15
Everest Avenue, Llanishen, CF14 5A 113m2 £3,571 13
Llanon Road, Llanishen, CF14 5A 95m2 £3,171 13

Search for your street here.

New build activity

Street Avg size Avg £/m2 New build sales
Walker Mews, Llanishen, CF14 5N 78m2 £3,446 12

Walker Mews, Llanishen, CF14 5N has seen 12 new build sales in the last 4 years (average price £268,846). These new build homes typically have an internal area of 78 m2, with an average price of £3,446 m2. This £sqm average is £316 above the average for CF14 5. New builds typically command a £ per sqm premium so this is normal.

Raw data

Our analysis of Llanishen 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
Apartment 47 Llys Isan, Ilex Close, Llanishen, Cardiff £430,000
94 4,574
8 Cedar Court, Fidlas Rd, Llanishen, Cardiff £210,000
64 3,281
7, Hunt Close, Llanishen, Cardiff £380,000
79 4,810

See the entire list of all sales in Llanishen (CF14 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.