Our Data Sources
21, Harriet Street, Cardiff has no recent1 records in the Land Registry and a single entry in the EPC database dated February 2026.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 21, Harriet Street, Cardiff, we estimate a market value of £431,173 and a rental value of £1,655 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £381,896 and £1,465 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Harriet Street, Cardiff as measuring 144 m2.
That makes it the 11th largest plot in the postcode, where 19 of the 20 other houses have recorded plot data.
Energy Efficiency
21, Harriet Street, Cardiff has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Feb 2026.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
The most recent sale of 21, Harriet Street, Cardiff completed on 29th May 1996 at £40,710 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
- Sold May 1996£40,710
Similar Properties Sold Nearby
Since 2013 40 properties similar to 21, Harriet Street, Cardiff have sold within a radius of 330 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 10th January 2025, was 63, Woodville Road, Cardiff, CF24 4FX, a freehold house which sold for £374,860.
Read more about house prices in CF24.
- Sold Jan 2025£374,860 | 5 Bed House63, Woodville Road, Cardiff, CF24 4FX63, Woodville Road, Cardiff, CF24 4FX
- Sold Jul 2024£475,000 | 5 Bed House22, Ruthin Gardens, Cardiff, CF24 4AU22, Ruthin Gardens, Cardiff, CF24 4AU
- Sold May 2024£410,000 | 5 Bed House171, Richmond Road, Cardiff, CF24 3BT171, Richmond Road, Cardiff, CF24 3BT
- Sold Aug 2023£410,000 | 4 Bed House143, Wyeverne Road, Cardiff, CF24 4BJ143, Wyeverne Road, Cardiff, CF24 4BJ
- Sold Apr 2023£200,000 | 4 Bed House15, Llandough Street, Cardiff, CF24 4AW15, Llandough Street, Cardiff, CF24 4AW
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £364,455, ranging from £255,099 to £459,954.
- 19 Harriet Street
5 Bed House | 5 m | Est. Value: £419,974
- 23 Harriet Street
4 Bed House | 5 m | Est. Value: £353,466
- 17 Harriet Street
4 Bed House | 10 m | Est. Value: £360,063
- 25 Harriet Street
4 Bed House | 10 m | Est. Value: £346,761
- 27 Harriet Street
5 Bed House | 15 m | Est. Value: £404,316
Location Comparison
Of the 124 addresses on Harriet Street, Cardiff, CF24, 21, Harriet Street, Cardiff comes out as the 26th largest and the 10th most expensive in our analysis of the public data.
It is also £181k more expensive than the average property across the CF24 district.
More reading links
Schools Nearby
Public Transport Nearby
- Cathays|300 m away
- Cardiff Queen Street|1.2 km away
- Cardiff Central|1.7 km away
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.





