Our Data Sources
21, Blenheim Road, Sidcup has a single entry in the Land Registry from October 2025 and a single entry in the EPC database dated May 2023.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
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, Blenheim Road, Sidcup, we estimate a market value of £656,365 and a rental value of £2,685 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £581,352 and £2,378 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Blenheim Road, Sidcup as measuring 235 m2.
That makes it the 25th largest plot in the postcode, where all 30 other houses have recorded plot data.
Energy Efficiency
21, Blenheim Road, Sidcup has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 15 May 2023.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 21, Blenheim Road, Sidcup completed on 3rd October 2025 at £623,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 this is the property's only sale.
Values of comparable properties have dropped by 8.0% over the period since October 2025.
- Sold Oct 2025£623,000
Similar Properties Sold Nearby
Over the past 2 years 228 properties similar to 21, Blenheim Road, Sidcup have sold within a radius of 660 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 5th January 2026, was 187, Hurst Road, Sidcup, DA15 9AH, a freehold house which sold for £630,000.
Read more about house prices in DA15.
- Sold Jan 2026£630,000 | 4 Bed House187, Hurst Road, Sidcup, DA15 9AH187, Hurst Road, Sidcup, DA15 9AH
- Sold Aug 2025£795,000 | 4 Bed House15, Chaucer Road, Sidcup, DA15 9AP15, Chaucer Road, Sidcup, DA15 9AP
- Sold Jun 2025£620,000 | 4 Bed House33, Blenheim Road, Sidcup, DA15 9AU33, Blenheim Road, Sidcup, DA15 9AU
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 30 addresses on Blenheim Road, Sidcup, DA15, 21, Blenheim Road, Sidcup comes out as the 7th largest and the 9th most expensive in our analysis of the public data.
It is also £122k more expensive than the average property across the DA15 district.
More reading links
Schools Nearby
- Hurst Primary School900 m away
- Chatsworth Infant School900 m away
- Birkbeck Primary School1.0 km away
- Hurstmere School200 m away
- Chislehurst and Sidcup Grammar School700 m away
- Cleeve Park School900 m away
More reading links
Public Transport Nearby
- Albany Park|700 m away
- Sidcup|1.0 km away
- Bexley|2.2 km away
Available Internet Speeds
Internet coverage here is poor, based on recent Ofcom data, and connectivity may be weak or unavailable.
According to recent data from Ofcom, Slow/none Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.
