Flat A, 44, Belsize Avenue has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 20 Sep 2019.

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

According to HM Land Registry, Flat A, 44, Belsize Avenue was last sold on 23rd September 2022 for £860,000 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

Since September 2022, the market for similar properties has dropped by 17.7%.

• Sold Sep 2022£860,000
• Sold Sep 1999£265,000

According to the Land Registry and our network of Estate Agents, there have been 92 sales of properties similar to Flat A, 44, Belsize Avenue within a radius of 270 metres since 2016.

The most recent example is Flat 27, Hillfield Court, Belsize Avenue, London, NW3 4BJ, a leasehold flat which sold for £575,000 on the 2nd December 2025.

Read more about house prices in NW3.

• Sold Dec 2025£575,000 | 3 Bed FlatFlat 27, Hillfield Court, Belsize Avenue, London, NW3 4BJFlat 27, Hillfield Court, Belsize Avenue, London, NW3 4BJ
• Sold Nov 2025£725,000 | 2 Bed FlatFlat 70, Hillfield Court, Belsize Avenue, London, NW3 4BGFlat 70, Hillfield Court, Belsize Avenue, London, NW3 4BG
• Sold Mar 2025£877,000 | 2 Bed Flat49B, Belsize Avenue, London, NW3 4BN49B, Belsize Avenue, London, NW3 4BN
• Sold Mar 2025£855,000 | 2 Bed Flat4, Tudor Close, London, NW3 4AB4, Tudor Close, London, NW3 4AB
• Sold Mar 2025£857,000 | 2 Bed Flat46, Tudor Close, London, NW3 4AG46, Tudor Close, London, NW3 4AG
• Sold Sep 2024£800,000 | 2 Bed Flat19B, Belsize Park, London, NW3 4DU19B, Belsize Park, London, NW3 4DU
• Sold Aug 2024£820,000 | 3 Bed FlatFlat 16, Glenloch Court, Glenmore Road, London, NW3 4DDFlat 16, Glenloch Court, Glenmore Road, London, NW3 4DD
• Sold Jul 2024£960,000 | 2 Bed FlatFlat 10, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 10, Hillfield Mansions, Haverstock Hill, London, NW3 4QR
• Sold Sep 2023£920,000 | 3 Bed FlatFlat 103, Hillfield Court, Belsize Avenue, London, NW3 4BEFlat 103, Hillfield Court, Belsize Avenue, London, NW3 4BE
• 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 May 2023£600,000 | 2 Bed FlatFlat 15, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 15, Hillfield Mansions, Haverstock Hill, London, NW3 4QR
• Sold Oct 2022£1,000,000 | 2 Bed Flat3, Tudor Close, London, NW3 4AB3, Tudor Close, London, NW3 4AB
• Sold Apr 2022£800,000 | 2 Bed Flat2, Tudor Close, London, NW3 4AB2, Tudor Close, London, NW3 4AB
• Sold Dec 2021£800,000 | 3 Bed Flat56, Tudor Close, London, NW3 4AG56, Tudor Close, London, NW3 4AG
• Sold Oct 2021£850,000 | 2 Bed Flat43, Tudor Close, London, NW3 4AG43, Tudor Close, London, NW3 4AG
• Sold Oct 2020£783,750 | 3 Bed FlatFlat 9, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 9, Hillfield Mansions, Haverstock Hill, London, NW3 4QR
• Sold Jun 2020£780,000 | 2 Bed Flat51, Tudor Close, London, NW3 4AG51, Tudor Close, London, NW3 4AG
• Sold Jan 2020£685,000 | 2 Bed FlatFlat 18, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 18, Hillfield Mansions, Haverstock Hill, London, NW3 4QR
• Sold Jul 2017£980,000 | 3 Bed FlatFlat 8, Glenloch Court, Glenmore Road, London, NW3 4DDFlat 8, Glenloch Court, Glenmore Road, London, NW3 4DD
• Sold Mar 2016£800,000 | 2 Bed FlatFlat 1, Glenloch Court, Glenmore Road, London, NW3 4DDFlat 1, Glenloch Court, Glenmore Road, London, NW3 4DD

Belsize Avenue, London, NW3 has a total of 446 addresses. According to our analysis of all the public data, Flat A, 44, Belsize Avenue is the 176th largest and the 147th most expensive property on the street.

When compared to the postcode district it is £527k less expensive than the average property in NW3.

• Rosary Catholic Primary School

  200 m away
• Fitzjohn's Primary School

  700 m away
• Fleet Primary School

  700 m away

• The UCL Academy

  1.0 km away
• Haverstock School

  1.2 km away
• Harris Academy St John's Wood

  1.5 km away

• Belsize Park

  |

  300 m away
• Hampstead Heath

  |

  600 m away
• Swiss Cottage

  |

  900 m away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.