Flat 3, 46, Belsize Avenue has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 May 2019.

The property is connected to mains gas and has partial secondary glazing. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, Flat 3, 46, Belsize Avenue was last sold on 6th September 2002 for £279,950 and was recorded as a leasehold flat.

The property has had 2 sales since 1995.

According to the Land Registry and our network of Estate Agents, there have been 28 sales of properties similar to Flat 3, 46, Belsize Avenue within a radius of 270 metres since 2012.

The most recent example is Flat 2, 22, Belsize Avenue, London, NW3 4AU, a leasehold flat which sold for £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 Mar 2025£475,000 | 1 Bed FlatFlat 2, 47, Belsize Avenue, London, NW3 4BNFlat 2, 47, Belsize Avenue, London, NW3 4BN
• Sold Mar 2025£491,000 | 1 Bed FlatFlat 17, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 17, Hillfield Mansions, Haverstock Hill, London, NW3 4QR
• Sold Mar 2025£420,000 | 1 Bed FlatFlat 3, Hillfield Court, Belsize Avenue, London, NW3 4BHFlat 3, Hillfield Court, Belsize Avenue, London, NW3 4BH
• Sold Jul 2023£525,000 | 1 Bed FlatFlat 5, 5, Belsize Avenue, London, NW3 4BLFlat 5, 5, Belsize Avenue, London, NW3 4BL
• Sold Mar 2023£470,000 | 1 Bed Flat60A, Belsize Avenue, London, NW3 4AA60A, Belsize Avenue, London, NW3 4AA
• Sold Dec 2022£494,000 | 1 Bed FlatFlat 3, 33, Glenmore Road, London, NW3 4DAFlat 3, 33, Glenmore Road, London, NW3 4DA
• 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 Aug 2022£550,000 | 1 Bed FlatFlat 3, 27, Belsize Avenue, London, NW3 4BLFlat 3, 27, Belsize Avenue, London, NW3 4BL
• Sold Jun 2021£531,000 | 1 Bed FlatFlat 6, 26, Belsize Avenue, London, NW3 4AUFlat 6, 26, Belsize Avenue, London, NW3 4AU
• Sold Jun 2021£535,000 | 1 Bed FlatFlat 7, 5, Belsize Avenue, London, NW3 4BLFlat 7, 5, Belsize Avenue, London, NW3 4BL
• Sold Oct 2020£380,000 | 1 Bed FlatFlat 82, Hillfield Court, Belsize Avenue, London, NW3 4BEFlat 82, Hillfield Court, Belsize Avenue, London, NW3 4BE
• 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 May 2018£550,000 | 1 Bed FlatFlat 12, 28, Belsize Avenue, London, NW3 4AUFlat 12, 28, Belsize Avenue, London, NW3 4AU
• Sold Mar 2014£525,000 | 1 Bed FlatFlat 1, 16, Belsize Avenue, London, NW3 4AUFlat 1, 16, Belsize Avenue, London, NW3 4AU
• 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

Belsize Avenue, London, NW3 has a total of 446 addresses. According to our analysis of all the public data, Flat 3, 46, Belsize Avenue is the 375th largest and the 327th most expensive property on the street.

When compared to the postcode district it is £815k 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.