Our Data Sources
21, Belsize Square has no records in the Land Registry and a single entry in the EPC database dated November 2013.
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
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 21, Belsize Square is in very good condition we estimate a sale value of £6,048,504 and a rental value of £16,905 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £5,357,246 and a rental value of £14,973 per month.
Energy Efficiency
21, Belsize Square has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 01 Nov 2013.
The property is not connected to mains gas and has fully double glazed windows. It is heated using a boiler and underfloor heating (mains gas).
Similar Properties Sold Nearby
According to the Land Registry and our network of Estate Agents, there have been 4 sales of properties similar to 21, Belsize Square within a radius of 280 metres since 2009.
The most recent example is 4, Buckland Crescent, London, NW3 5DX, a freehold house which sold for £5,475,000 on the 11th August 2021.
Read more about house prices in NW3.
- Sold Aug 2021£5,475,000 | 6 Bed House4, Buckland Crescent, London, NW3 5DX4, Buckland Crescent, London, NW3 5DX
- Sold Jan 2021£5,600,000 | 6 Bed House19, Belsize Square, London, NW3 4HT19, Belsize Square, London, NW3 4HT
- Sold Jul 2015£5,800,000 | 6 Bed House49, Belsize Square, London, NW3 4HN49, Belsize Square, London, NW3 4HN
- Sold Dec 2009£5,000,000 | 6 Bed House1, Belsize Square, London, NW3 4HT1, Belsize Square, London, NW3 4HT
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Properties Let Nearby
Our network of Estate Agents reports 2 lets within 280 metres of 21, Belsize Square over the last 2 years.
Most recently, 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat, was 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 £1,626,154, ranging from £628,382 to £5,911,653.
- Flat 4, 22 Belsize Square
3 Bed Flat | 2 m | Est. Value: £1,190,492
- Flat 1, 22 Belsize Square
3 Bed Flat | 2 m | Est. Value: £1,442,797
- Flat 5, 22 Belsize Square
2 Bed Flat | 2 m | Est. Value: £889,358
- Flat 2, 22 Belsize Square
3 Bed Flat | 2 m | Est. Value: £1,267,478
- Flat A
4 Bed Flat | 16 m | Est. Value: £2,428,769
Location Comparison
Belsize Square, London, NW3 has a total of 264 addresses. According to our analysis of all the public data, 21, Belsize Square is the 4th largest and the 3rd most expensive property on the street.
When compared to the postcode district it is £4.435m more expensive than the average property in NW3.
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
According to recent data from Ofcom, Ultrafast Broadband is available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.












