Detached
£605,411
93% above the Llanishen average
11.5% of sales
What is the average house price in Llanishen? £313,434
The average house price in Llanishen is £313,434, based on 141 homes sold in the 12 months to September 2026. Prices are down 1.6% (£4,992) on a year earlier.
- 1 year change
- −1.6%
- Sold in 12 months
- 141
- Data up to
- September 2026
Sold prices from HM Land Registry, not asking prices. How we calculate this
How much does each type of property cost in Llanishen?
Average sold price by property type, and each type's share of recent sales.
Semi-detached
£372,105
19% above the Llanishen average
34.4% of sales
Terraced
£297,620
5% below the Llanishen average
21.1% of sales
Flats
£179,823
43% below the Llanishen average
32.9% of sales
Are house prices in Llanishen going up or down?
House prices in Llanishen are falling: down 1.6% (£4,992) over the past year. Over the past 10 years, prices are up 53.1% (£108,665).
Past 12 months
−1.6%
−£4,992From £318,426 to £313,434
£329,777£310,905
Past 10 years
+53.1%
+£108,665From £204,769 to £313,434
£318,426£204,769
Quick answers for Llanishen
9 key facts at a glance.
When did prices peak?
£454,500
Highest average, reached in March 2026
How many homes sold?
141
Recorded so far for the 12 months to September 2026
What sells most often?
Semi-detached houses
34.4% of recent sales
What is the most common price range?
£200k - £300k
25.7% of sales
How many people live in Llanishen?
10,358
8,259 people per square mile · Very High (Census 2021)
Population density is Very High, on a scale from Very Low to Very High.
Usual residents, including communal establishments.
How many households are in Llanishen?
4,572
3,645 households per square mile · Very High (Census 2021)
Household density is Very High, on a scale from Very Low to Very High.
Occupied households, not communal establishments.
How much green space is in Llanishen?
27 m² per resident
Less green space per resident than 56% of areas in England and Wales. That's about 3.8 football pitches for every 1,000 residents.
8.6% of the area · 2 public parks. Parks, playing fields, allotments and other public green space, not counting golf courses. Contains OS data © Crown copyright and database right 2026.
What is the crime rate in Llanishen?
80 crimes per 1,000 residents
Very High · −12.7% on the previous year · 12 months to September 2026
Crime rate is Very High, on a scale from Very Low to Very High.
Contains public sector information licensed under the Open Government Licence v3.0. Source: police.uk.
How does Llanishen rank?
17th most expensive area of Cardiff.
Compared with 36 areas
What are the most expensive homes sold in Llanishen?
The highest recorded sale prices in Llanishen, from HM Land Registry.
#1 Most expensive sale
lambourne house lambourne crescent, cardiff
£1,750,000
Sold July 2019
View house details
How do house prices in Llanishen compare with nearby areas?
Llanishen compared with the 6 nearest other areas in Cardiff.
Llanishen vs Thornhill
- Llanishen
- £313,434
- Thornhill
- £320,883+£7,449
Open comparison
Llanishen vs Cyncoed
- Llanishen
- £313,434
- Cyncoed
- £536,344+£222,910
Open comparison
Llanishen vs Heath
- Llanishen
- £313,434
- Heath
- £357,681+£44,247
Open comparison
Llanishen vs Lisvane
- Llanishen
- £313,434
- Lisvane
- £627,494+£314,060
Open comparison
Llanishen vs Rhiwbina
- Llanishen
- £313,434
- Rhiwbina
- £403,334+£89,900
Open comparison
Llanishen vs Pentwyn
- Llanishen
- £313,434
- Pentwyn
- £233,191−£80,243
Open comparison
Thinking of buying in Llanishen?
There's a lot to think about. Whether it's a home to live in or a buy-to-let, our free checklist walks you through what to check before you make an offer.
What to check before you buyWhere does this data come from?
Price information is from HM Land Registry, location boundaries are from OpenStreetMap, and households and population are from Nomis Census 2021 postcode estimates (21 March 2021). Parks and green space are from OS Open Greenspace. Contains OS data © Crown copyright and database right 2026. Crime is from police.uk street-level data. Contains public sector information licensed under the Open Government Licence v3.0. Source: police.uk.
Last updated 6 November 2026 at 00:25 with the latest Land Registry data (September 2026). The Llanishen dataset covers 994 postcodes.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.
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