46A, Belsize Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 May 2021.

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

The most recent sale of 46A, Belsize Square completed on 16th October 2024 at £1,269,537 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold twice.

Values of comparable properties have dropped by 16.3% over the period since October 2024.

• Sold Oct 2024£1,269,537
• Sold Nov 1998£335,000

Since 2011 47 properties similar to 46A, Belsize Square have sold within a radius of 260 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 4th February 2026, was Flat E, 19, Belsize Park Gardens, London, NW3 4JG, a leasehold flat which sold for £1,325,000.

Read more about house prices in NW3.

• Sold Feb 2026£1,325,000 | 3 Bed FlatFlat E, 19, Belsize Park Gardens, London, NW3 4JGFlat E, 19, Belsize Park Gardens, London, NW3 4JG
• 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£1,087,000 | 3 Bed Flat19D , Belsize Park, London, NW3 4DU19D , Belsize Park, London, NW3 4DU
• 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 Nov 2024£1,550,000 | 3 Bed Flat19C , Belsize Park, London, NW3 4DU19C , Belsize Park, London, NW3 4DU
• Sold Jul 2024£1,325,000 | 3 Bed FlatFlat 4, 3, Buckland Crescent, London, NW3 5DHFlat 4, 3, Buckland Crescent, London, NW3 5DH
• Sold Jan 2024£1,270,000 | 3 Bed FlatFlat 2, 6, Lancaster Drive, London, NW3 4HAFlat 2, 6, Lancaster Drive, London, NW3 4HA
• Sold Jan 2023£1,420,000 | 3 Bed Flat25C , Belsize Avenue, London, NW3 4BL25C , Belsize Avenue, London, NW3 4BL
• Sold Feb 2022£1,600,000 | 3 Bed Flat6, Belsize Park Gardens, London, NW3 4LD6, Belsize Park Gardens, London, NW3 4LD
• Sold Dec 2019£1,300,000 | 3 Bed FlatFlat 2, 27, Belsize Park Gardens, London, NW3 4JHFlat 2, 27, Belsize Park Gardens, London, NW3 4JH
• Sold Jun 2019£1,400,000 | 3 Bed FlatFlat 1, 13, Belsize Square, London, NW3 4HTFlat 1, 13, Belsize Square, London, NW3 4HT
• Sold Nov 2018£1,200,000 | 3 Bed Flat7B , Belsize Park Gardens, London, NW3 4LB7B , Belsize Park Gardens, London, NW3 4LB
• 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 Oct 2016£1,300,000 | 3 Bed Flat1 Avenue House, Belsize Park Gardens, London, NW3 4LA1 Avenue House, Belsize Park Gardens, London, NW3 4LA
• Sold May 2015£1,230,500 | 3 Bed Flat43A, Belsize Square, London, NW3 4HN43A, Belsize Square, London, NW3 4HN
• Sold Jan 2013£1,095,000 | 3 Bed Flat5 Avenue House , Belsize Park Gardens, London, NW3 4LA5 Avenue House , Belsize Park Gardens, London, NW3 4LA
• Sold Mar 2011£932,000 | 3 Bed Flat28C , Belsize Square, London, NW3 4HU28C , Belsize Square, London, NW3 4HU

Over the past 2 years our Estate Agent network has recorded 2 lets within 260 metres of 46A, 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, 46A, Belsize Square comes out as the 46th largest and the 67th most expensive in our analysis of the public data.

It is also £138k 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.