The most recent sale of 18A, Belsize Park Gardens completed on 7th April 2008 at £1,185,000 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 24.9% over the period since April 2008.

• Sold Apr 2008£1,185,000
• Sold Dec 1999£445,000

Since 2016 65 properties similar to 18A, Belsize Park Gardens have sold within a radius of 250 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 Jul 2025£2,000,000 | 3 Bed Flat10A, Belsize Park, London, NW3 4ES10A, Belsize Park, London, NW3 4ES
• Sold Mar 2025£1,350,000 | 3 Bed FlatFlat 3, 11, Belsize Park, London, NW3 4ESFlat 3, 11, Belsize Park, London, NW3 4ES
• Sold Jan 2025£1,087,000 | 3 Bed Flat19D , Belsize Park, London, NW3 4DU19D , Belsize Park, London, NW3 4DU
• Sold Jan 2025£1,520,000 | 3 Bed FlatFlat 5, 13, Belsize Park Gardens, London, NW3 4JGFlat 5, 13, Belsize Park Gardens, London, NW3 4JG
• Sold Jul 2024£1,563,290 | 3 Bed FlatFlat 5, 42, Belsize Square, London, NW3 4HNFlat 5, 42, Belsize Square, London, NW3 4HN
• 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 Aug 2023£1,850,000 | 3 Bed FlatFlat 1, 8, Belsize Park Gardens, London, NW3 4LDFlat 1, 8, Belsize Park Gardens, London, NW3 4LD
• Sold Aug 2023£1,850,000 | 3 Bed FlatFlat 7, 13, Belsize Grove, London, NW3 4UXFlat 7, 13, Belsize Grove, London, NW3 4UX
• Sold Jul 2023£1,750,000 | 3 Bed FlatFlat 1, 9-11 , Belsize Grove, London, NW3 4UUFlat 1, 9-11 , Belsize Grove, London, NW3 4UU
• Sold Jun 2023£1,700,000 | 4 Bed FlatFlat 4, 16, Belsize Park, London, NW3 4ESFlat 4, 16, Belsize Park, London, NW3 4ES
• Sold Mar 2023£1,680,000 | 3 Bed Flat65B , Belsize Park Gardens, London, NW3 4JN65B , Belsize Park Gardens, London, NW3 4JN
• Sold Sep 2022£1,520,000 | 3 Bed FlatFlat 1, 14, Belsize Park, London, NW3 4ESFlat 1, 14, Belsize Park, London, NW3 4ES
• Sold Feb 2022£1,625,000 | 3 Bed Flat15A, Belsize Square, London, NW3 4HT15A, Belsize Square, London, NW3 4HT
• Sold Jan 2022£1,150,000 | 3 Bed FlatFlat 20, Manor Mansions, Belsize Grove, London, NW3 4NBFlat 20, Manor Mansions, Belsize Grove, London, NW3 4NB
• Sold Dec 2020£1,405,000 | 3 Bed Flat37D, Belsize Square, London, NW3 4HL37D, Belsize Square, London, NW3 4HL
• 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 Jul 2016£1,850,000 | 3 Bed Flat24C , Belsize Park Gardens, London, NW3 4LH24C , Belsize Park Gardens, London, NW3 4LH

Over the past 2 years our Estate Agent network has recorded 2 lets within 250 metres of 18A, Belsize Park Gardens.

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 540 addresses on Belsize Park Gardens, London, NW3, 18A, Belsize Park Gardens comes out as the 209th largest and the 67th most expensive in our analysis of the public data.

It is also £116k more expensive than the average property across the NW3 district.

• Rosary Catholic Primary School

  500 m away
• Holy Trinity CofE Primary School, NW3

  700 m away
• St Paul's Church of England Primary School

  800 m away

• The UCL Academy

  800 m away
• Haverstock School

  1.1 km away
• Harris Academy St John's Wood

  1.3 km away

• Belsize Park

  |

  300 m away
• Swiss Cottage

  |

  700 m away
• Finchley Road

  |

  800 m away

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