Our Data Sources
Flat 21, 41-43, Belsize Avenue has 2 entries in the Land Registry , most recently in September 2019 and a single entry in the EPC database dated April 2019.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 2 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Flat 21, 41-43, Belsize Avenue would be worth £435,418, with a potential rental value of £1,881 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £385,656, with a rental value of £1,666 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 21, 41-43, Belsize Avenue has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 12 Apr 2019.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Electric underfloor heating.
Sold Prices
Flat 21, 41-43, Belsize Avenue last changed hands on 13th September 2019, selling for £520,000. The transaction was logged as a leasehold flat by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has dropped by 17.1% since September 2019.
- Sold Sep 2019£520,000
- Sold Apr 2014£400,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 4 sales of comparable properties within 270 metres of Flat 21, 41-43, Belsize Avenue across the last 2 years.
Most recently, 24A, Glenmore Road, London, NW3 4DB, a leasehold flat, sold at £400,000 on the 14th July 2025.
Read more about house prices in NW3.
- Sold Jul 2025£400,000 | 1 Bed Flat24A, Glenmore Road, London, NW3 4DB24A, Glenmore Road, London, NW3 4DB
- Sold Jan 2014£490,000 | 1 Bed FlatFlat C, 44, Belsize Avenue, London, NW3 4AEFlat C, 44, Belsize Avenue, London, NW3 4AE
- Sold Nov 2010£340,000 | 1 Bed FlatFlat 5, 47, Belsize Avenue, London, NW3 4BNFlat 5, 47, Belsize Avenue, London, NW3 4BN
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks Flat 21, 41-43, Belsize Avenue as the 383rd largest and the 382nd most expensive of the 446 addresses on Belsize Avenue, London, NW3.
Against the NW3 postcode district average, it is £907k less expensive than the typical property.
More reading links
Schools Nearby
- Rosary Catholic Primary School200 m away
- Fitzjohn's Primary School600 m away
- Fleet Primary School700 m away
- The UCL Academy1.0 km away
- Haverstock School1.2 km away
- William Ellis School1.5 km away
More reading links
Public Transport Nearby
- Belsize Park|300 m away
- Hampstead Heath|600 m away
- Finchley Road|900 m away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
