Flat B, 34, Belsize Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 07 May 2025.

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

Land Registry records and our Estate Agent network show 107 sales of comparable properties within 260 metres of Flat B, 34, Belsize Square since 2015.

Most recently, Flat 18, 7, Lambolle Road, London, NW3 4HS, a leasehold flat, sold at £750,000 on the 30th January 2026.

Read more about house prices in NW3.

• Sold Jan 2026£750,000 | 2 Bed FlatFlat 18, 7, Lambolle Road, London, NW3 4HSFlat 18, 7, Lambolle Road, London, NW3 4HS
• Sold Jan 2026£695,000 | 2 Bed FlatFlat D, 71, Belsize Park Gardens, London, NW3 4JPFlat D, 71, Belsize Park Gardens, London, NW3 4JP
• Sold Jul 2025£845,000 | 2 Bed Flat25G , Belsize Park Gardens, London, NW3 4JH25G , Belsize Park Gardens, London, NW3 4JH
• Sold Mar 2025£475,000 | 2 Bed FlatFlat 3, 28, Belsize Park Gardens, London, NW3 4LHFlat 3, 28, Belsize Park Gardens, London, NW3 4LH
• 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£1,135,000 | 2 Bed FlatFlat 3, 5, Belsize Avenue, London, NW3 4BLFlat 3, 5, Belsize Avenue, London, NW3 4BL
• Sold Feb 2025£880,000 | 2 Bed Flat25D , Belsize Park Gardens, London, NW3 4JH25D , Belsize Park Gardens, London, NW3 4JH
• 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 Sep 2024£800,000 | 2 Bed Flat19B, Belsize Park, London, NW3 4DU19B, Belsize Park, London, NW3 4DU
• Sold Dec 2023£615,000 | 2 Bed FlatFlat 11, 27, Belsize Park, London, NW3 4DUFlat 11, 27, Belsize Park, London, NW3 4DU
• 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 Dec 2021£1,450,000 | 3 Bed Flat42A, Belsize Park Gardens, London, NW3 4LY42A, Belsize Park Gardens, London, NW3 4LY
• Sold Jun 2021£793,000 | 2 Bed Flat26A , Lambolle Road, London, NW3 4HR26A , Lambolle Road, London, NW3 4HR
• 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 Sep 2015£862,500 | 2 Bed FlatFlat 7, 28, Belsize Park Gardens, London, NW3 4LHFlat 7, 28, Belsize Park Gardens, London, NW3 4LH

Agents in our network have reported 1 letting of a comparable property within 260 metres of Flat B, 34, 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

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Our analysis of the public data ranks Flat B, 34, Belsize Square as the 151st largest and the 140th most expensive of the 264 addresses on Belsize Square, London, NW3.

Against the NW3 postcode district average, it is £517k less expensive than the typical property.

• 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

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