Our Data Sources
Flat 4, 423, Blackfen Road, Sidcup has 61 entries in the Land Registry, most recently in April 2022 and a single entry in the EPC database dated September 2025.
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.
1Sales dated prior to 2007 are shown, but are not used in our calculations.
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 Flat 4, 423, Blackfen Road, Sidcup is in very good condition we estimate a sale value of £231,508 and a rental value of £1,226 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £205,050 and a rental value of £1,086 per month.
Energy Efficiency
Flat 4, 423, Blackfen Road, Sidcup has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 27 Sep 2025.
The property is not connected to mains gas and has fully double glazed windows. It is heated using room heaters (electric).
Sold Prices
According to HM Land Registry, Flat 4, 423, Blackfen Road, Sidcup was last sold on 22nd April 2022 for £230,000 and was recorded as a leasehold flat.
The property has had 6 sales since 1995.
Since April 2022, the market for similar properties has dropped by 2.3%.
- Sold Apr 2022£230,000
- Sold Aug 2014£165,000
- Sold Apr 2012£125,000
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 6 sales of properties similar to Flat 4, 423, Blackfen Road, Sidcup within a radius of 590 metres since 2019.
The most recent example is Flat 6, 423, Blackfen Road, Sidcup, DA15 9NN, a leasehold flat which sold for £230,000 on the 25th April 2025.
Read more about house prices in DA15.
- Sold Apr 2025£230,000 | 1 Bed FlatFlat 6, 423, Blackfen Road, Sidcup, DA15 9NNFlat 6, 423, Blackfen Road, Sidcup, DA15 9NN
- Sold Sep 2022£222,500 | 1 Bed FlatFlat 1, 423, Blackfen Road, Sidcup, DA15 9NNFlat 1, 423, Blackfen Road, Sidcup, DA15 9NN
- Sold Apr 2022£225,000 | 1 Bed FlatFlat 3, 423, Blackfen Road, Sidcup, DA15 9NNFlat 3, 423, Blackfen Road, Sidcup, DA15 9NN
- Sold Mar 2021£225,000 | 1 Bed Flat76, Westerham Drive, Sidcup, DA15 9NR76, Westerham Drive, Sidcup, DA15 9NR
- Sold Mar 2021£210,000 | 1 Bed Flat82, Westerham Drive, Sidcup, DA15 9NR82, Westerham Drive, Sidcup, DA15 9NR
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 £371,371, ranging from £220,484 to £735,880.
- Flat 6, 423 Blackfen Road
1 Bed Flat | 0 m | Est. Value: £223,909
- Flat 2, 423 Blackfen Road
2 Bed Flat | 0 m | Est. Value: £287,171
- Flat 8, 423 Blackfen Road
1 Bed Flat | 0 m | Est. Value: £240,484
- Flat 3, 423 Blackfen Road
1 Bed Flat | 0 m | Est. Value: £220,484
- Flat 5, 423 Blackfen Road
1 Bed Flat | 0 m | Est. Value: £250,036
Location Comparison
Blackfen Road, Sidcup, DA15 has a total of 427 addresses. According to our analysis of all the public data, Flat 4, 423, Blackfen Road, Sidcup is the 424th largest and the 385th most expensive property on the street.
When compared to the postcode district it is £283k less expensive than the average property in DA15.
More reading links
Schools Nearby
- Sherwood Park Primary School300 m away
- Danson Primary School1.0 km away
- Days Lane Primary School1.0 km away
- Blackfen School for Girls100 m away
- Bexley Grammar School900 m away
- Hurstmere School1.2 km away
More reading links
Public Transport Nearby
- Sidcup|1.8 km away
- Albany Park|1.8 km away
- Welling|1.9 km 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 available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.
