37D, Belsize Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 15 May 2018.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 37D, Belsize Square was last sold on 4th December 2020 for £1,405,000 and was recorded as a leasehold flat.

The property has had 4 sales since 1995.

Since December 2020, the market for similar properties has dropped by 14.1%.

• Sold Dec 2020£1,405,000
• Sold Jan 2014£1,300,000
• Sold Jul 2009£807,000

According to the Land Registry and our network of Estate Agents, there have been 63 sales of properties similar to 37D, Belsize Square within a radius of 260 metres since 2017.

The most recent example is Flat 3, 29, Belsize Park Gardens, London, NW3 4JH, a leasehold flat which sold for £1,500,000 on the 3rd October 2025.

Read more about house prices in NW3.

• Sold Oct 2025£1,500,000 | 3 Bed FlatFlat 3, 29, Belsize Park Gardens, London, NW3 4JHFlat 3, 29, Belsize Park Gardens, London, NW3 4JH
• Sold Mar 2025£1,350,000 | 3 Bed FlatFlat 3, 11, Belsize Park, London, NW3 4ESFlat 3, 11, Belsize Park, London, NW3 4ES
• Sold Jan 2025£1,087,000 | 3 Bed Flat19D , Belsize Park, London, NW3 4DU19D , Belsize Park, London, NW3 4DU
• Sold Jan 2025£1,520,000 | 3 Bed FlatFlat 5, 13, Belsize Park Gardens, London, NW3 4JGFlat 5, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Nov 2024£1,550,000 | 3 Bed Flat19C , Belsize Park, London, NW3 4DU19C , Belsize Park, London, NW3 4DU
• Sold Oct 2024£1,269,537 | 3 Bed Flat46A, Belsize Square, London, NW3 4HN46A, Belsize Square, London, NW3 4HN
• Sold Jul 2024£1,563,290 | 3 Bed FlatFlat 5, 42, Belsize Square, London, NW3 4HNFlat 5, 42, Belsize Square, London, NW3 4HN
• Sold May 2024£1,000,000 | 4 Bed FlatFlat 6, 23, Belsize Park, London, NW3 4DUFlat 6, 23, Belsize Park, London, NW3 4DU
• Sold Sep 2023£1,337,000 | 3 Bed FlatFlat 2, 29, Belsize Park Gardens, London, NW3 4JHFlat 2, 29, Belsize Park Gardens, London, NW3 4JH
• Sold Jun 2023£1,700,000 | 4 Bed FlatFlat 4, 16, Belsize Park, London, NW3 4ESFlat 4, 16, Belsize Park, London, NW3 4ES
• Sold Sep 2022£1,520,000 | 3 Bed FlatFlat 1, 14, Belsize Park, London, NW3 4ESFlat 1, 14, Belsize Park, London, NW3 4ES
• Sold Feb 2022£1,625,000 | 3 Bed Flat15A, Belsize Square, London, NW3 4HT15A, Belsize Square, London, NW3 4HT
• Sold Jan 2022£1,150,000 | 3 Bed FlatFlat 20, Manor Mansions, Belsize Grove, London, NW3 4NBFlat 20, Manor Mansions, Belsize Grove, London, NW3 4NB
• Sold Jan 2022£1,550,000 | 3 Bed FlatFlat 2, Manor Mansions, Belsize Grove, London, NW3 4NBFlat 2, Manor Mansions, Belsize Grove, London, NW3 4NB
• Sold Jul 2021£1,995,000 | 3 Bed FlatFlat 3, 3, Belsize Park, London, NW3 4ETFlat 3, 3, Belsize Park, London, NW3 4ET
• Sold Aug 2020£1,585,000 | 3 Bed Flat14A, Belsize Square, London, NW3 4HT14A, Belsize Square, London, NW3 4HT
• Sold Dec 2019£1,490,000 | 3 Bed Flat18A, Belsize Square, London, NW3 4HT18A, Belsize Square, London, NW3 4HT
• Sold Oct 2019£1,876,000 | 3 Bed FlatFlat 1, 13, Belsize Park Gardens, London, NW3 4JGFlat 1, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Jul 2018£1,715,000 | 4 Bed Flat18A, Belsize Park, London, NW3 4DU18A, Belsize Park, London, NW3 4DU
• Sold Sep 2017£1,485,000 | 4 Bed FlatFlat 7, 25, Belsize Park, London, NW3 4DUFlat 7, 25, Belsize Park, London, NW3 4DU

Our network of Estate Agents reports 2 lets within 260 metres of 37D, 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.

Belsize Square, London, NW3 has a total of 264 addresses. According to our analysis of all the public data, 37D, Belsize Square is the 33rd largest and the 41st most expensive property on the street.

When compared to the postcode district it is £53k more expensive than the average property in NW3.

• Rosary Catholic Primary School

  500 m away
• Holy Trinity CofE Primary School, NW3

  600 m away
• St Paul's Church of England Primary School

  800 m away

• The UCL Academy

  700 m away
• Haverstock School

  1.1 km away
• Harris Academy St John's Wood

  1.2 km away

• Belsize Park

  |

  500 m away
• Swiss Cottage

  |

  600 m away
• Finchley Road

  |

  700 m away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.