Our Data Sources
Flat 1, 423, Blackfen Road, Sidcup has 51 entries in the Land Registry, most recently in January 2017 and a single entry in the EPC database dated September 2022.
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
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 Flat 1, 423, Blackfen Road, Sidcup, we estimate a market value of £231,508 and a rental value of £1,226 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £205,050 and £1,086 per month respectively.
Energy Efficiency
Flat 1, 423, Blackfen Road, Sidcup has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 22 Sep 2022.
The property is not connected to mains gas and has fully double glazed windows. It is heated using electric storage heaters.
Sold Prices
The most recent sale of Flat 1, 423, Blackfen Road, Sidcup completed on 3rd January 2017 at £230,500 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 the property has sold 5 times.
Values of comparable properties have risen by 4.1% over the period since January 2017.
- Sold Jan 2017£230,500
- Sold Mar 2015£160,000
- Sold Jun 2014£150,000
Similar Properties Sold Nearby
Since 2019 6 properties similar to Flat 1, 423, Blackfen Road, Sidcup have sold within a radius of 590 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 25th April 2025, was Flat 6, 423, Blackfen Road, Sidcup, DA15 9NN, a leasehold flat which sold for £230,000.
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 Apr 2022£230,000 | 1 Bed FlatFlat 4, 423, Blackfen Road, Sidcup, DA15 9NNFlat 4, 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
Of the 427 addresses on Blackfen Road, Sidcup, DA15, Flat 1, 423, Blackfen Road, Sidcup comes out as the 426th largest and the 387th most expensive in our analysis of the public data.
It is also £283k less expensive than the average property across the DA15 district.
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
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband available in this area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












