3B, Belsize Avenue has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 Jun 2020.

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 3B, Belsize Avenue completed on 14th August 2002 at £113,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 this is the property's only sale.

Since 2019 65 properties similar to 3B, Belsize Avenue have sold within a radius of 270 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 24th April 2026, was Flat 3, 1, Lyndhurst Gardens, London, NW3 5NS, a leasehold flat which sold for £915,000.

Read more about house prices in NW3.

• Sold Apr 2026£915,000 | 2 Bed FlatFlat 3, 1, Lyndhurst Gardens, London, NW3 5NSFlat 3, 1, Lyndhurst Gardens, London, NW3 5NS
• 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£877,000 | 2 Bed Flat49B, Belsize Avenue, London, NW3 4BN49B, Belsize Avenue, London, NW3 4BN
• 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 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 Dec 2023£615,000 | 2 Bed FlatFlat 11, 27, Belsize Park, London, NW3 4DUFlat 11, 27, Belsize Park, London, NW3 4DU
• Sold Dec 2023£880,000 | 2 Bed FlatFlat 6, 33, Belsize Park, London, NW3 4DXFlat 6, 33, Belsize Park, London, NW3 4DX
• 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 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 Jan 2023£675,000 | 2 Bed FlatFlat 5, 11, Belsize Park, London, NW3 4ESFlat 5, 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 Oct 2022£905,000 | 2 Bed FlatFlat 3, 33, Belsize Park, London, NW3 4DXFlat 3, 33, Belsize Park, London, NW3 4DX
• 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 Aug 2019£700,000 | 2 Bed Flat9E , Belsize Avenue, London, NW3 4BL9E , Belsize Avenue, London, NW3 4BL

Over the past 2 years our Estate Agent network has recorded 1 let of a property comparable to 3B, Belsize Avenue, all within 270 metres.

The latest, in March 2024, was 3A , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living.

• 
  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 446 addresses on Belsize Avenue, London, NW3, 3B, Belsize Avenue comes out as the 228th largest and the 137th most expensive in our analysis of the public data.

It is also £506k less expensive than the average property across the NW3 district.

• 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

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