Flat D, 10, Belsize Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 03 May 2023.

The property is not connected to mains gas and has single glazed windows. It is heated using community scheme.

According to HM Land Registry, Flat D, 10, Belsize Square was last sold on 19th September 2023 for £617,500 and was recorded as a leasehold flat.

The property has had 3 sales since 1995.

Since September 2023, the market for similar properties has dropped by 12.9%.

• Sold Sep 2023£617,500
• Sold Dec 2000£230,000
• Sold Jul 1996£92,000

According to the Land Registry and our network of Estate Agents, there have been 52 sales of properties similar to Flat D, 10, Belsize Square within a radius of 280 metres since 2016.

The most recent example is Flat 2, 22, Belsize Avenue, London, NW3 4AU, a leasehold flat which sold for £545,000 on the 5th December 2025.

Read more about house prices in NW3.

• Sold Dec 2025£545,000 | 1 Bed FlatFlat 2, 22, Belsize Avenue, London, NW3 4AUFlat 2, 22, Belsize Avenue, London, NW3 4AU
• Sold Sep 2023£780,000 | 2 Bed FlatFlat 5, 28, Belsize Park Gardens, London, NW3 4LHFlat 5, 28, Belsize Park Gardens, London, NW3 4LH
• Sold Jul 2023£525,000 | 1 Bed FlatFlat 5, 5, Belsize Avenue, London, NW3 4BLFlat 5, 5, Belsize Avenue, London, NW3 4BL
• Sold Mar 2023£508,000 | 2 Bed FlatFlat 27, 35-36, Belsize Square, London, NW3 4HLFlat 27, 35-36, Belsize Square, London, NW3 4HL
• Sold Mar 2023£650,000 | 2 Bed FlatFlat 2, 5, Lambolle Road, London, NW3 4HSFlat 2, 5, Lambolle Road, London, NW3 4HS
• Sold Sep 2022£615,000 | 1 Bed FlatFlat 3, Claridge House 13, Belsize Park, London, NW3 4ESFlat 3, Claridge House 13, Belsize Park, London, NW3 4ES
• Sold Sep 2022£455,000 | 1 Bed FlatFlat 4, 47, Belsize Park, London, NW3 4EEFlat 4, 47, Belsize Park, London, NW3 4EE
• Sold Jun 2022£560,000 | 2 Bed FlatFlat 2, 5, Belsize Avenue, London, NW3 4BLFlat 2, 5, Belsize Avenue, London, NW3 4BL
• Sold Jun 2022£640,000 | 2 Bed FlatFlat 3, 2, Crossfield Road, London, NW3 4NSFlat 3, 2, Crossfield Road, London, NW3 4NS
• Sold Mar 2022£615,000 | 2 Bed FlatFlat 23, 7, Lambolle Road, London, NW3 4HSFlat 23, 7, Lambolle Road, London, NW3 4HS
• Sold Mar 2022£519,000 | 1 Bed Flat4E , Belsize Square, London, NW3 4HT4E , Belsize Square, London, NW3 4HT
• Sold Oct 2021£620,000 | 1 Bed Flat49A, Belsize Park Gardens, London, NW3 4JL49A, Belsize Park Gardens, London, NW3 4JL
• Sold Jun 2021£535,000 | 1 Bed FlatFlat 7, 5, Belsize Avenue, London, NW3 4BLFlat 7, 5, Belsize Avenue, London, NW3 4BL
• Sold Jun 2021£525,000 | 2 Bed Flat14, Mccrone Mews, London, NW3 5BG14, Mccrone Mews, London, NW3 5BG
• Sold Apr 2021£525,000 | 1 Bed Flat17, Mccrone Mews, London, NW3 5BG17, Mccrone Mews, London, NW3 5BG
• Sold Feb 2021£515,000 | 1 Bed Flat16D , Belsize Square, London, NW3 4HT16D , Belsize Square, London, NW3 4HT
• Sold Jan 2021£525,000 | 1 Bed Flat41D, Belsize Square, London, NW3 4HN41D, Belsize Square, London, NW3 4HN
• Sold May 2018£630,000 | 1 Bed FlatFlat 3, 13, Belsize Park Gardens, London, NW3 4JGFlat 3, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Aug 2017£680,000 | 2 Bed FlatFlat 4, 26, Belsize Park, London, NW3 4DUFlat 4, 26, Belsize Park, London, NW3 4DU
• Sold Feb 2016£659,000 | 1 Bed Flat41C, Belsize Square, London, NW3 4HN41C, Belsize Square, London, NW3 4HN

Our network of Estate Agents reports 2 lets within 280 metres of Flat D, 10, 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, Flat D, 10, Belsize Square is the 215th largest and the 208th most expensive property on the street.

When compared to the postcode district it is £732k less expensive than the average property in NW3.

• 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

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