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According to the public record, Flat A, 20, Belsize Square is a period apartment with 2,206 ft2 of internal area.
Apartments of this size in this area normally have 4 bedrooms.
Based on available information, and assuming reasonable condition, the estimated sale value for Flat A, 20, Belsize Square is £2,434,283 and the estimated rental value is £7,293 per month.
The apartment is within 20, Belsize Square, London, NW3.
Belsize Square, London, NW3 is located in the borough of Camden within the NW3 postal district.
Flat A, 20, Belsize Square has no records in the 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.
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 A, 20, Belsize Square is in very good condition we estimate a sale value of £2,555,997 and a rental value of £7,657 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £2,263,883 and a rental value of £6,782 per month.
Over the last 12 months the sale value of Flat A 20 Belsize Square has decreased by an estimated £12,695 (0.5%) and its rental value has increased by an estimated £442 per month (6.1%), giving an expected gross yield of 3.6%.
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 Boiler and radiators, mains gas.
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to Flat A, 20, Belsize Square within a radius of 270 metres over the last 2 years.
The most recent example is Flat 26, Eton Court, Eton Avenue, London, NW3 3HJ, a leasehold flat which sold for £2,200,000 on the 27th February 2026.
Read more about house prices in NW3.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Our network of Estate Agents report 2 lets within a 270 metres radius of Flat A, 20, Belsize Square over the last 2 years.
Most recently 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living in February 2025.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Belsize Square, London, NW3 has a total of 264 addresses. According to our analysis of all the public data, Flat A, 20, Belsize Square is the 12th largest and the 7th most expensive property on the street.
When compared to the postcode district it is £1.127m more expensive than the average property in NW3.
The nearest school is Holy Trinity CofE Primary School, NW3 which is 519 metres away. The nearest train station is Swiss Cottage which is 500 metres away.
Please login for all schools and rail links, broadband speeds, floodrisk and area demographics information including levels of education, home ownership and more.