Our Data Sources
21, Monmouth Street, Cardiff has no records in the the Land Registry and a single entry in the EPC database dated April 2019.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 21, Monmouth Street, Cardiff is in very good condition we estimate a sale value of £252,266 and a rental value of £1,706 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £223,435 and a rental value of £1,511 per month.
Plot Size
According to data from HM Land Registry, 21, Monmouth Street, Cardiff sits on a plot of 115 m2.
We have plot size data on 29 out of 30 other houses in the postcode and 21, Monmouth Street, Cardiff sits on the 11th largest plot.
Energy Efficiency
21, Monmouth Street, Cardiff has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Apr 2019.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 169 sales of properties similar to 21, Monmouth Street, Cardiff within a radius of 360 metres over the last 2 years.
The most recent example is 42, Allerton Street, Cardiff, CF11 6SL, a freehold house which sold for £225,000 on the 29th April 2026.
Read more about house prices in CF11.
- Sold Apr 2026£225,000 | 3 Bed House42, Allerton Street, Cardiff, CF11 6SL42, Allerton Street, Cardiff, CF11 6SL
- Sold Jun 2025£250,000 | 3 Bed House6, Cornwall Street, Cardiff, CF11 6SQ6, Cornwall Street, Cardiff, CF11 6SQ
- Sold Jun 2025£250,000 | 3 Bed House23, Court Road, Cardiff, CF11 6RY23, Court Road, Cardiff, CF11 6RY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Monmouth Street, Cardiff, CF11 has a total of 30 addresses. According to our analysis of all the public data, 21, Monmouth Street, Cardiff is the 16th largest and the 16th most expensive property on the street.
When compared to the postcode district it is £11k less expensive than the average property in CF11.
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Schools Nearby
Public Transport Nearby
- Cardiff Central|700 m away
- Ninian Park|900 m away
- Grangetown (Cardiff)|900 m away
Available Internet Speeds
According to recent data from Ofcom, Superfast Broadband is available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.












