18A, Belsize Park has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 26 Jan 2011.

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

The most recent sale of 18A, Belsize Park completed on 30th July 2018 at £1,715,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 5.2% over the period since July 2018.

• Sold Jul 2018£1,715,000
• Sold Jun 2006£925,000

Since 2008 40 properties similar to 18A, Belsize Park have sold within a radius of 270 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 3rd October 2025, was Flat 3, 29, Belsize Park Gardens, London, NW3 4JH, a leasehold flat which sold for £1,500,000.

Read more about house prices in NW3.

• Sold Oct 2025£1,500,000 | 3 Bed FlatFlat 3, 29, Belsize Park Gardens, London, NW3 4JHFlat 3, 29, Belsize Park Gardens, London, NW3 4JH
• Sold Nov 2024£1,779,500 | 3 Bed Flat37C , Belsize Park Gardens, London, NW3 4JJ37C , Belsize Park Gardens, London, NW3 4JJ
• Sold Jun 2024£1,470,000 | 4 Bed FlatFlat 5, 14, Daleham Gardens, London, NW3 5DAFlat 5, 14, Daleham Gardens, London, NW3 5DA
• Sold May 2024£1,000,000 | 4 Bed FlatFlat 6, 23, Belsize Park, London, NW3 4DUFlat 6, 23, Belsize Park, London, NW3 4DU
• Sold Apr 2024£1,200,000 | 3 Bed FlatFlat 2, 31, Belsize Avenue, London, NW3 4BLFlat 2, 31, Belsize Avenue, London, NW3 4BL
• Sold Dec 2023£1,850,000 | 3 Bed FlatFlat 2, 8, Belsize Park Gardens, London, NW3 4LDFlat 2, 8, Belsize Park Gardens, London, NW3 4LD
• Sold Sep 2023£1,337,000 | 3 Bed FlatFlat 2, 29, Belsize Park Gardens, London, NW3 4JHFlat 2, 29, Belsize Park Gardens, London, NW3 4JH
• Sold May 2022£2,800,000 | 3 Bed FlatFlat 4, 6, Lyndhurst Gardens, London, NW3 5NRFlat 4, 6, Lyndhurst Gardens, London, NW3 5NR
• Sold Dec 2021£1,350,000 | 3 Bed FlatFlat 3, 6, Lyndhurst Gardens, London, NW3 5NRFlat 3, 6, Lyndhurst Gardens, London, NW3 5NR
• Sold Jul 2021£1,995,000 | 3 Bed FlatFlat 3, 3, Belsize Park, London, NW3 4ETFlat 3, 3, Belsize Park, London, NW3 4ET
• Sold Apr 2021£1,675,000 | 3 Bed FlatFlat 2, 16, Belsize Park Gardens, London, NW3 4LDFlat 2, 16, Belsize Park Gardens, London, NW3 4LD
• Sold Apr 2021£1,475,000 | 4 Bed Flat26B , Belsize Park Gardens, London, NW3 4LH26B , Belsize Park Gardens, London, NW3 4LH
• Sold Dec 2020£1,405,000 | 3 Bed Flat37D, Belsize Square, London, NW3 4HL37D, Belsize Square, London, NW3 4HL
• Sold Sep 2020£1,885,000 | 3 Bed FlatFlat 2, 35, Belsize Park Gardens, London, NW3 4JJFlat 2, 35, Belsize Park Gardens, London, NW3 4JJ
• Sold Dec 2019£1,380,000 | 3 Bed FlatFlat 2, 33, Belsize Park, London, NW3 4DXFlat 2, 33, Belsize Park, London, NW3 4DX
• Sold Nov 2019£1,465,000 | 3 Bed Flat29A, Belsize Avenue, London, NW3 4BL29A, Belsize Avenue, London, NW3 4BL
• Sold Oct 2019£1,876,000 | 3 Bed FlatFlat 1, 13, Belsize Park Gardens, London, NW3 4JGFlat 1, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Sep 2017£1,485,000 | 4 Bed FlatFlat 7, 25, Belsize Park, London, NW3 4DUFlat 7, 25, Belsize Park, London, NW3 4DU
• Sold Aug 2013£1,850,000 | 4 Bed FlatFlat 3, 26, Belsize Park, London, NW3 4DUFlat 3, 26, Belsize Park, London, NW3 4DU
• Sold Sep 2008£1,160,000 | 4 Bed Flat18C , Belsize Park, London, NW3 4DU18C , Belsize Park, London, NW3 4DU

Over the past 2 years our Estate Agent network has recorded 2 lets within 270 metres of 18A, Belsize Park.

The latest, in February 2025, was 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living.

• 
  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.

Of the 423 addresses on Belsize Park, London, NW3, 18A, Belsize Park comes out as the 29th largest and the 61st most expensive in our analysis of the public data.

It is also £113k more expensive than the average property across the NW3 district.

• Holy Trinity CofE Primary School, NW3

  500 m away
• Rosary Catholic Primary School

  500 m away
• Fitzjohn's Primary School

  600 m away

• The UCL Academy

  800 m away
• Harris Academy St John's Wood

  1.2 km away
• Haverstock School

  1.3 km away

• Belsize Park

  |

  600 m away
• Finchley Road

  |

  600 m away
• Swiss Cottage

  |

  600 m away

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