Flat 5, 5, Belsize Avenue has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 16 Jun 2025.

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

Flat 5, 5, Belsize Avenue last changed hands on 5th July 2023, selling for £525,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has dropped by 12.8% since July 2023.

• Sold Jul 2023£525,000
• Sold Jul 2014£465,000
• Sold Sep 2000£180,000

Land Registry records and our Estate Agent network show 24 sales of comparable properties within 270 metres of Flat 5, 5, Belsize Avenue since 2007.

Most recently, Flat 2, 22, Belsize Avenue, London, NW3 4AU, a leasehold flat, sold at £545,000 on the 5th December 2025.

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 Jun 2025£585,000 | 1 Bed Flat6, Mccrone Mews, London, NW3 5BG6, Mccrone Mews, London, NW3 5BG
• 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 Mar 2022£519,000 | 1 Bed Flat4E , Belsize Square, London, NW3 4HT4E , Belsize Square, London, NW3 4HT
• Sold Jun 2021£535,000 | 1 Bed FlatFlat 7, 5, Belsize Avenue, London, NW3 4BLFlat 7, 5, Belsize Avenue, London, NW3 4BL
• 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 Jan 2021£525,000 | 1 Bed Flat41D, Belsize Square, London, NW3 4HN41D, Belsize Square, London, NW3 4HN
• Sold May 2020£550,000 | 1 Bed Flat18A, Tudor Close, London, NW3 4AB18A, Tudor Close, London, NW3 4AB
• Sold Dec 2019£490,000 | 1 Bed FlatFlat 6, 5, Belsize Avenue, London, NW3 4BLFlat 6, 5, Belsize Avenue, London, NW3 4BL
• Sold Nov 2018£400,000 | 1 Bed FlatFlat 2, 49, Belsize Avenue, London, NW3 4BNFlat 2, 49, Belsize Avenue, London, NW3 4BN
• Sold Mar 2016£602,500 | 1 Bed Flat16G , Belsize Square, London, NW3 4HT16G , Belsize Square, London, NW3 4HT
• Sold Mar 2014£525,000 | 1 Bed FlatFlat 1, 16, Belsize Avenue, London, NW3 4AUFlat 1, 16, Belsize Avenue, London, NW3 4AU
• Sold Dec 2013£625,000 | 1 Bed FlatFlat E, 10, Belsize Square, London, NW3 4HTFlat E, 10, Belsize Square, London, NW3 4HT
• Sold Jun 2013£360,000 | 1 Bed FlatFlat 4, 5, Belsize Avenue, London, NW3 4BLFlat 4, 5, Belsize Avenue, London, NW3 4BL
• Sold Jul 2012£249,250 | 1 Bed Flat54A , Glenloch Road, London, NW3 4DL54A , Glenloch Road, London, NW3 4DL
• Sold Mar 2012£357,500 | 1 Bed FlatFlat 5, 38, Belsize Square, London, NW3 4HLFlat 5, 38, Belsize Square, London, NW3 4HL
• Sold Dec 2011£433,300 | 1 Bed FlatFlat 3, 20, Belsize Park Gardens, London, NW3 4LHFlat 3, 20, Belsize Park Gardens, London, NW3 4LH
• Sold Mar 2007£275,000 | 1 Bed FlatFlat 3, 22, Belsize Avenue, London, NW3 4AUFlat 3, 22, Belsize Avenue, London, NW3 4AU

Agents in our network have reported 2 lettings within 270 metres of Flat 5, 5, 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 5, 5, Belsize Avenue as the 377th largest and the 318th most expensive of the 446 addresses on Belsize Avenue, London, NW3.

Against the NW3 postcode district average, it is £804k 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.