Flat 5, 46, Belsize Avenue has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 May 2014.

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

The most recent sale of Flat 5, 46, Belsize Avenue completed on 16th December 2019 at £1,090,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold twice.

Values of comparable properties have dropped by 14.4% over the period since December 2019.

Since 2016 62 properties similar to Flat 5, 46, Belsize Avenue have sold within a radius of 270 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 4th February 2026, was Flat E, 19, Belsize Park Gardens, London, NW3 4JG, a leasehold flat which sold for £1,325,000.

Read more about house prices in NW3.

• Sold Feb 2026£1,325,000 | 3 Bed FlatFlat E, 19, Belsize Park Gardens, London, NW3 4JGFlat E, 19, Belsize Park Gardens, London, NW3 4JG
• Sold Jul 2025£810,000 | 3 Bed FlatFlat 34, Belsize Court, Wedderburn Road, London, NW3 5QJFlat 34, Belsize Court, Wedderburn Road, London, NW3 5QJ
• Sold May 2025£947,500 | 3 Bed Flat35G, Belsize Avenue, London, NW3 4BN35G, Belsize Avenue, London, NW3 4BN
• Sold Mar 2025£1,050,000 | 3 Bed FlatFlat 3, 20, Ornan Road, London, NW3 4PXFlat 3, 20, Ornan Road, London, NW3 4PX
• 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 Aug 2024£985,000 | 3 Bed FlatFlat 95, Hillfield Court, Belsize Avenue, London, NW3 4BEFlat 95, Hillfield Court, Belsize Avenue, London, NW3 4BE
• Sold Jun 2024£1,137,500 | 3 Bed FlatFlat 44, Belsize Court, Wedderburn Road, London, NW3 5QHFlat 44, Belsize Court, Wedderburn Road, London, NW3 5QH
• Sold May 2024£1,075,000 | 3 Bed FlatFlat 3, Belsize Court, Wedderburn Road, London, NW3 5QLFlat 3, Belsize Court, Wedderburn Road, London, NW3 5QL
• Sold Apr 2024£1,325,000 | 3 Bed FlatFlat 33, Belsize Court, Wedderburn Road, London, NW3 5QNFlat 33, Belsize Court, Wedderburn Road, London, NW3 5QN
• Sold Feb 2024£1,050,000 | 3 Bed FlatFlat 90, Hillfield Court, Belsize Avenue, London, NW3 4BEFlat 90, Hillfield Court, Belsize Avenue, London, NW3 4BE
• Sold Dec 2023£1,312,500 | 3 Bed FlatFlat 48, Belsize Court, Wedderburn Road, London, NW3 5QHFlat 48, Belsize Court, Wedderburn Road, London, NW3 5QH
• Sold Nov 2023£835,000 | 3 Bed FlatFlat 89, Hillfield Court, Belsize Avenue, London, NW3 4BEFlat 89, Hillfield Court, Belsize Avenue, London, NW3 4BE
• 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 Jan 2023£960,000 | 3 Bed Flat20, Tudor Close, London, NW3 4AG20, Tudor Close, London, NW3 4AG
• Sold Jan 2023£1,160,000 | 3 Bed FlatFlat 6, Glenloch Court, Glenmore Road, London, NW3 4DDFlat 6, Glenloch Court, Glenmore Road, London, NW3 4DD
• Sold Sep 2022£898,500 | 3 Bed FlatFlat E, 44, Belsize Avenue, London, NW3 4AEFlat E, 44, Belsize Avenue, London, NW3 4AE
• Sold Sep 2021£899,950 | 3 Bed FlatFlat 30, Hillfield Court, Belsize Avenue, London, NW3 4BJFlat 30, Hillfield Court, Belsize Avenue, London, NW3 4BJ
• 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 Jul 2016£1,046,175 | 3 Bed FlatFlat 5, Glenloch Court, Glenmore Road, London, NW3 4DDFlat 5, Glenloch Court, Glenmore Road, London, NW3 4DD
• Sold Feb 2016£1,170,000 | 3 Bed FlatFlat 19, Hillfield Mansions, Haverstock Hill, London, NW3 4QRFlat 19, Hillfield Mansions, Haverstock Hill, London, NW3 4QR

Of the 446 addresses on Belsize Avenue, London, NW3, Flat 5, 46, Belsize Avenue comes out as the 126th largest and the 103rd most expensive in our analysis of the public data.

It is also £390k less expensive than the average property across the NW3 district.

• 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

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