37A, Belsize Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 28 Jun 2022.

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

According to the Land Registry and our network of Estate Agents, there have been 68 sales of properties similar to 37A, Belsize Square within a radius of 260 metres since 2015.

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 Aug 2025£1,040,000 | 3 Bed Flat44A, Belsize Square, London, NW3 4HN44A, Belsize Square, London, NW3 4HN
• 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£1,250,000 | 3 Bed Flat43D , Belsize Square, London, NW3 4HN43D , Belsize Square, London, NW3 4HN
• 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 Dec 2024£1,325,000 | 3 Bed FlatFlat 11, Manor Mansions, Belsize Grove, London, NW3 4NBFlat 11, Manor Mansions, Belsize Grove, London, NW3 4NB
• 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£1,325,000 | 3 Bed FlatFlat 4, 3, Buckland Crescent, London, NW3 5DHFlat 4, 3, Buckland Crescent, London, NW3 5DH
• 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 Feb 2022£1,600,000 | 3 Bed Flat6, Belsize Park Gardens, London, NW3 4LD6, Belsize Park Gardens, London, NW3 4LD
• Sold Dec 2020£1,405,000 | 3 Bed Flat37D, Belsize Square, London, NW3 4HL37D, Belsize Square, London, NW3 4HL
• Sold Dec 2019£1,490,000 | 3 Bed Flat18A, Belsize Square, London, NW3 4HT18A, Belsize Square, London, NW3 4HT
• Sold Jun 2019£1,400,000 | 3 Bed FlatFlat 1, 13, Belsize Square, London, NW3 4HTFlat 1, 13, Belsize Square, London, NW3 4HT
• Sold Jul 2018£1,550,000 | 3 Bed Flat18D , Belsize Park, London, NW3 4DU18D , Belsize Park, London, NW3 4DU
• Sold Mar 2018£1,160,000 | 3 Bed Flat44B , Belsize Square, London, NW3 4HN44B , Belsize Square, London, NW3 4HN
• Sold May 2015£1,230,500 | 3 Bed Flat43A, Belsize Square, London, NW3 4HN43A, Belsize Square, London, NW3 4HN

Our network of Estate Agents reports 2 lets within 260 metres of 37A, 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, 37A, Belsize Square is the 53rd largest and the 59th most expensive property on the street.

When compared to the postcode district it is £86k less 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.