Our Data Sources
Flat A, 20, Belsize Square has no records in the Land Registry and a single entry in the EPC database dated November 2021.
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
In very good condition, we estimate Flat A, 20, Belsize Square would be worth £2,550,207, with a potential rental value of £7,795 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £2,258,755, with a rental value of £6,904 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat A, 20, Belsize Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Nov 2021.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 7 sales of comparable properties within 270 metres of Flat A, 20, Belsize Square since 2009.
Most recently, Flat 26, Eton Court, Eton Avenue, London, NW3 3HJ, a leasehold flat, sold at £2,200,000 on the 27th February 2026.
Read more about house prices in NW3.
- Sold Feb 2026£2,200,000 | 4 Bed FlatFlat 26, Eton Court, Eton Avenue, London, NW3 3HJFlat 26, Eton Court, Eton Avenue, London, NW3 3HJ
- Sold Nov 2022£2,635,000 | 4 Bed Flat6, Crossfield Road, London, NW3 4NS6, Crossfield Road, London, NW3 4NS
- Sold Aug 2022£2,625,000 | 4 Bed FlatFlat 2, 43, Lancaster Grove, London, NW3 4HBFlat 2, 43, Lancaster Grove, London, NW3 4HB
- Sold Jun 2022£2,450,000 | 4 Bed Flat6B , Belsize Park Gardens, London, NW3 4LD6B , Belsize Park Gardens, London, NW3 4LD
- Sold Apr 2017£1,900,000 | 4 Bed FlatFlat D, 31, Lancaster Grove, London, NW3 4EXFlat D, 31, Lancaster Grove, London, NW3 4EX
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Agents in our network have reported 2 lettings within 270 metres of Flat A, 20, Belsize Square across the last 2 years.
The newest of these is 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living in February 2025.
- Let agreed Feb 2025£ Undisclosed | 2 Bed Flat3B , Lancaster Drive, London, NW3 4EY3B , Lancaster Drive, London, NW3 4EY
- Let agreed Mar 2024£ Undisclosed | 1 Bed Flat3A , Lancaster Drive, London, NW3 4EY3A , Lancaster Drive, London, NW3 4EY
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Explore Nearby Properties
The surrounding properties have an average estimated value of £1,986,709, ranging from £761,752 to £5,911,653.
- Flat B
4 Bed Flat | 0 m | Est. Value: £2,428,769
- 19 Belsize Square
6 Bed House | 3 m | Est. Value: £5,911,653
- 21 Belsize Square
6 Bed House | 16 m | Est. Value: £5,760,480
- Flat 1, 18 Belsize Square
3 Bed Flat | 17 m | Est. Value: £1,262,525
- Flat 3, 18 Belsize Square
3 Bed Flat | 17 m | Est. Value: £1,637,047
Location Comparison
Our analysis of the public data ranks Flat A, 20, Belsize Square as the 13th largest and the 7th most expensive of the 264 addresses on Belsize Square, London, NW3.
Against the NW3 postcode district average, it is £1.103m more expensive than the typical property.
More reading links
Schools Nearby
- Holy Trinity CofE Primary School, NW3500 m away
- Rosary Catholic Primary School600 m away
- St Paul's Church of England Primary School800 m away
- The UCL Academy600 m away
- Harris Academy St John's Wood1.1 km away
- Haverstock School1.2 km away
More reading links
Public Transport Nearby
- Swiss Cottage|500 m away
- Belsize Park|600 m away
- Finchley Road|600 m away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
