Flat 1, 3, Belsize Avenue has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Aug 2014.

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

Flat 1, 3, Belsize Avenue last changed hands on 6th August 2015, selling for £1,075,000. 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 18.2% since August 2015.

Land Registry records and our Estate Agent network show 84 sales of comparable properties within 270 metres of Flat 1, 3, Belsize Avenue since 2014.

Most recently, 49B, Belsize Avenue, London, NW3 4BN, a leasehold flat, sold at £877,000 on the 27th March 2025.

Read more about house prices in NW3.

• Sold Mar 2025£877,000 | 2 Bed Flat49B, Belsize Avenue, London, NW3 4BN49B, Belsize Avenue, London, NW3 4BN
• Sold Mar 2025£857,000 | 2 Bed Flat46, Tudor Close, London, NW3 4AG46, Tudor Close, London, NW3 4AG
• 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 Sep 2024£800,000 | 2 Bed Flat19B, Belsize Park, London, NW3 4DU19B, Belsize Park, London, NW3 4DU
• Sold Aug 2024£885,000 | 2 Bed Flat9B , Belsize Avenue, London, NW3 4BL9B , Belsize Avenue, London, NW3 4BL
• Sold Aug 2024£512,500 | 2 Bed Flat19, Mccrone Mews, London, NW3 5BG19, Mccrone Mews, London, NW3 5BG
• Sold Mar 2024£1,085,000 | 2 Bed FlatFlat 4, 11, Belsize Avenue, London, NW3 4BLFlat 4, 11, Belsize Avenue, London, NW3 4BL
• 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 Jul 2023£840,000 | 2 Bed FlatFlat 2, 50, Belsize Square, London, NW3 4HNFlat 2, 50, Belsize Square, London, NW3 4HN
• 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 Nov 2022£670,000 | 2 Bed Flat18, Mccrone Mews, London, NW3 5BG18, Mccrone Mews, London, NW3 5BG
• Sold May 2021£685,000 | 2 Bed Flat21, Mccrone Mews, London, NW3 5BG21, Mccrone Mews, London, NW3 5BG
• 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 Jan 2020£945,000 | 2 Bed FlatFlat 5, 26, Belsize Park, London, NW3 4DUFlat 5, 26, Belsize Park, London, NW3 4DU
• Sold Aug 2019£700,000 | 2 Bed Flat9E , Belsize Avenue, London, NW3 4BL9E , Belsize Avenue, London, NW3 4BL
• Sold Jun 2014£960,000 | 2 Bed Flat22A, Belsize Park, London, NW3 4DU22A, Belsize Park, London, NW3 4DU

Agents in our network have reported 2 lettings of comparable properties within 270 metres of Flat 1, 3, Belsize Avenue 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 1, 3, Belsize Avenue as the 207th largest and the 134th most expensive of the 446 addresses on Belsize Avenue, London, NW3.

Against the NW3 postcode district average, it is £498k less expensive than the typical property.

• Rosary Catholic Primary School

  400 m away
• Fitzjohn's Primary School

  600 m away
• Holy Trinity CofE Primary School, NW3

  600 m away

• The UCL Academy

  900 m away
• Haverstock School

  1.3 km away
• Harris Academy St John's Wood

  1.4 km away

• Belsize Park

  |

  400 m away
• Finchley Road

  |

  700 m away
• Hampstead Heath

  |

  700 m away

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