Flat 5, 22, Belsize Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 26 Mar 2026.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Flat 5, 22, Belsize Square last changed hands on 25th May 2022, selling for £1,000,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has dropped by 10.4% since May 2022.

• Sold May 2022£1,000,000
• Sold Sep 2013£695,000

Land Registry records and our Estate Agent network show 80 sales of comparable properties within 280 metres of Flat 5, 22, Belsize Square since 2020.

Most recently, Flat 4, 43, Eton Avenue, London, NW3 3EP, a leasehold flat, sold at £927,500 on the 10th November 2025.

Read more about house prices in NW3.

• Sold Nov 2025£927,500 | 2 Bed FlatFlat 4, 43, Eton Avenue, London, NW3 3EPFlat 4, 43, Eton Avenue, London, NW3 3EP
• Sold Jul 2025£700,000 | 2 Bed FlatFlat 8, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 8, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Mar 2025£705,000 | 2 Bed FlatFlat C, 71, Belsize Park Gardens, London, NW3 4JPFlat C, 71, Belsize Park Gardens, London, NW3 4JP
• Sold Feb 2025£880,000 | 2 Bed Flat25D , Belsize Park Gardens, London, NW3 4JH25D , Belsize Park Gardens, London, NW3 4JH
• Sold Feb 2025£680,000 | 2 Bed Flat22A, Adamson Road, London, NW3 3HR22A, Adamson Road, London, NW3 3HR
• Sold Nov 2024£755,000 | 2 Bed FlatFlat 6, 24, Belsize Park, London, NW3 4DUFlat 6, 24, Belsize Park, London, NW3 4DU
• Sold Nov 2024£1,085,000 | 2 Bed Flat44B, Belsize Park Gardens, London, NW3 4LY44B, Belsize Park Gardens, London, NW3 4LY
• Sold Oct 2024£790,000 | 2 Bed FlatFlat 7, 5, Lambolle Road, London, NW3 4HSFlat 7, 5, Lambolle Road, London, NW3 4HS
• Sold Oct 2024£425,000 | 2 Bed Flat59A, Belsize Park Gardens, London, NW3 4JN59A, Belsize Park Gardens, London, NW3 4JN
• Sold Aug 2024£825,000 | 2 Bed Flat44B, Lambolle Road, London, NW3 4HR44B, Lambolle Road, London, NW3 4HR
• Sold Jun 2024£775,000 | 2 Bed FlatFlat 2, 51, Belsize Park Gardens, London, NW3 4JLFlat 2, 51, Belsize Park Gardens, London, NW3 4JL
• Sold Oct 2023£780,000 | 2 Bed FlatFlat 2, 5A , Belsize Square, London, NW3 4HTFlat 2, 5A , Belsize Square, London, NW3 4HT
• Sold Oct 2023£721,500 | 2 Bed FlatFlat 4, Claridge House 13, Belsize Park, London, NW3 4ESFlat 4, Claridge House 13, Belsize Park, London, NW3 4ES
• Sold Sep 2023£810,500 | 2 Bed FlatFlat 7, 73, Belsize Park Gardens, London, NW3 4JPFlat 7, 73, Belsize Park Gardens, London, NW3 4JP
• Sold Jun 2023£935,000 | 2 Bed FlatFlat 9, 28, Belsize Park Gardens, London, NW3 4LHFlat 9, 28, Belsize Park Gardens, London, NW3 4LH
• Sold Apr 2023£800,000 | 2 Bed FlatFlat 1, 11, Belsize Park, London, NW3 4ESFlat 1, 11, Belsize Park, London, NW3 4ES
• Sold Oct 2022£885,000 | 2 Bed Flat65E , Belsize Park Gardens, London, NW3 4JN65E , Belsize Park Gardens, London, NW3 4JN
• Sold Dec 2021£1,450,000 | 3 Bed Flat42A, Belsize Park Gardens, London, NW3 4LY42A, Belsize Park Gardens, London, NW3 4LY
• Sold Aug 2020£755,000 | 2 Bed FlatFlat 6, Claridge House 13, Belsize Park, London, NW3 4ESFlat 6, Claridge House 13, Belsize Park, London, NW3 4ES
• Sold Jun 2020£835,000 | 2 Bed FlatFlat 7, 39, Eton Avenue, London, NW3 3EPFlat 7, 39, Eton Avenue, London, NW3 3EP

Agents in our network have reported 2 lettings of comparable properties within 280 metres of Flat 5, 22, Belsize Square across the last 2 years.

The newest of these is 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat 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.

Our analysis of the public data ranks Flat 5, 22, Belsize Square as the 149th largest and the 130th most expensive of the 264 addresses on Belsize Square, London, NW3.

Against the NW3 postcode district average, it is £436k less expensive than the typical property.

• Holy Trinity CofE Primary School, NW3

  500 m away
• Rosary Catholic Primary School

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

  800 m away

• The UCL Academy

  600 m away
• Harris Academy St John's Wood

  1.1 km away
• Haverstock School

  1.2 km away

• Swiss Cottage

  |

  500 m away
• Belsize Park

  |

  600 m away
• Finchley Road

  |

  600 m away

Environment Agency data suggests this area has a Very Low risk of flooding.