Flat 21, 57
Flat 21, 57
Description & Estimates







The public record describes Flat 21, 57, Belsize Park as a period apartment with 150 ft2 of internal area.
In this area, apartments of this size are normally studios with a balcony.
Flat 21, 57, Belsize Park has an estimated sale value of £229,750 and an estimated rental value of £771 per month, assuming reasonable condition and based on the information available.
The apartment sits within 57, Belsize Park, London, NW3.
Belsize Park, London, NW3 lies in the borough of Camden, within the NW3 postal district.
Our Data Sources
Flat 21, 57, Belsize Park has no records in the the Land Registry and a single entry in the EPC database dated February 2026.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate Flat 21, 57, Belsize Park would be worth £241,238, with a potential rental value of £809 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £213,668, with a rental value of £717 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Recent Market Change
The estimated sale value of Flat 21, 57, Belsize Park has fallen by £2,633 (1.1%) over the last year. During the same period, its estimated monthly rental value has moved up by £54 (7.0%). The property's estimated gross yield is currently 4.0%.
Energy Efficiency
Flat 21, 57, Belsize Park has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 23 Feb 2026.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 1 sale of a comparable property within 300 metres of Flat 21, 57, Belsize Park across the last 2 years.
Most recently, Flat 6, 17, Crossfield Road, London, NW3 4NT, a leasehold flat, sold at £158,000 on the 19th January 2015.
Read more about house prices in NW3.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Agents in our network have reported 1 letting within 300 metres of Flat 21, 57, Belsize Park across the last 2 years.
The newest of these is 15C, Fitzjohns Avenue, London, NW3 5JY, a leasehold flat let by Fine Living in February 2025.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Location Comparison
Our analysis of the public data ranks Flat 21, 57, Belsize Park as the 405th largest and the 418th most expensive of the 423 addresses on Belsize Park, London, NW3.
Against the NW3 postcode district average, it is £1.095m less expensive than the typical property.
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Schools Nearby
- 300mHoly Trinity CofE Primary School, NW3
- 800mFitzjohn's Primary School
- 900mRosary Catholic Primary School
- 500mThe UCL Academy
- 900mHarris Academy St John's Wood
- 1.4kmHaverstock School
More reading links
Public Transport Nearby
Swiss Cottage station is the nearest stop to Flat 21, 57, Belsize Park at 300 metres away.
- 300mSwiss Cottage
- 400mFinchley Road
- 600mSouth Hampstead
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.

