Flat 7, 50, Belsize Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 11 Jan 2021.

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

The most recent sale of Flat 7, 50, Belsize Square completed on 31st August 2004 at £299,950 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold twice.

• Sold Aug 2004£299,950
• Sold Jul 1996£111,000

Since 2017 51 properties similar to Flat 7, 50, Belsize Square have sold within a radius of 260 metres, per the Land Registry and our network of Estate Agents.

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

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 Mar 2025£550,000 | 2 Bed FlatFlat 3, 21, Belsize Avenue, London, NW3 4BLFlat 3, 21, Belsize Avenue, London, NW3 4BL
• Sold May 2024£650,000 | 2 Bed Flat22, Mccrone Mews, London, NW3 5BG22, Mccrone Mews, London, NW3 5BG
• 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 Sep 2023£617,500 | 1 Bed FlatFlat D, 10, Belsize Square, London, NW3 4HTFlat D, 10, Belsize Square, London, NW3 4HT
• 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 Nov 2022£530,000 | 1 Bed FlatFlat 4, 26, Belsize Avenue, London, NW3 4AUFlat 4, 26, Belsize Avenue, London, NW3 4AU
• 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 Jun 2022£560,000 | 2 Bed FlatFlat 2, 5, Belsize Avenue, London, NW3 4BLFlat 2, 5, Belsize Avenue, London, NW3 4BL
• Sold Jun 2022£553,000 | 2 Bed Flat16, Mccrone Mews, London, NW3 5BG16, Mccrone Mews, London, NW3 5BG
• 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£519,000 | 1 Bed Flat4E , Belsize Square, London, NW3 4HT4E , Belsize Square, London, NW3 4HT
• Sold Jun 2021£531,000 | 1 Bed FlatFlat 6, 26, Belsize Avenue, London, NW3 4AUFlat 6, 26, Belsize Avenue, London, NW3 4AU
• Sold Jun 2021£525,000 | 2 Bed Flat12, Mccrone Mews, London, NW3 5BG12, Mccrone Mews, London, NW3 5BG
• 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 Aug 2017£680,000 | 2 Bed FlatFlat 4, 26, Belsize Park, London, NW3 4DUFlat 4, 26, Belsize Park, London, NW3 4DU

Over the past 2 years our Estate Agent network has recorded 2 lets within 260 metres of Flat 7, 50, Belsize Square.

The latest, in February 2025, was 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living.

• 
  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.

Of the 264 addresses on Belsize Square, London, NW3, Flat 7, 50, Belsize Square comes out as the 212th largest and the 217th most expensive in our analysis of the public data.

It is also £753k less expensive than the average property across the NW3 district.

• Rosary Catholic Primary School

  500 m away
• Holy Trinity CofE Primary School, NW3

  600 m away
• Fitzjohn's Primary School

  700 m away

• The UCL Academy

  700 m away
• Harris Academy St John's Wood

  1.2 km away
• Haverstock School

  1.2 km away

• Belsize Park

  |

  500 m away
• Swiss Cottage

  |

  600 m away
• Finchley Road

  |

  700 m away

The flood risk here is rated Very Low, based on Environment Agency data.