51B, Belsize Park last changed hands on 16th February 2009, selling for £613,000. The transaction was logged as a leasehold flat by HM Land Registry.

In total it has sold 5 times since 1995.

The market for similar properties has risen by 32.0% since February 2009.

• Sold Feb 2009£613,000
• Sold Sep 2006£720,000
• Sold Aug 2003£499,950

Land Registry records and our Estate Agent network show 50 sales of comparable properties within 300 metres of 51B, Belsize Park since 2007.

Most recently, 17A, Crossfield Road, London, NW3 4NT, a leasehold flat, sold at £1,273,000 on the 22nd August 2025.

Read more about house prices in NW3.

• Sold Aug 2025£1,273,000 | 3 Bed Flat17A, Crossfield Road, London, NW3 4NT17A, Crossfield Road, London, NW3 4NT
• Sold Mar 2025£855,000 | 2 Bed FlatFlat 1, 17, Adamson Road, London, NW3 3HUFlat 1, 17, Adamson Road, London, NW3 3HU
• Sold Mar 2025£1,125,000 | 3 Bed FlatFlat 1, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 1, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Jan 2025£895,000 | 3 Bed FlatFlat 3, Maxwell Court 67, Eton Avenue, London, NW3 3EYFlat 3, Maxwell Court 67, Eton Avenue, London, NW3 3EY
• Sold Nov 2024£1,090,000 | 3 Bed FlatFlat 5, 8, Belsize Square, London, NW3 4HTFlat 5, 8, Belsize Square, London, NW3 4HT
• Sold Sep 2024£1,065,000 | 3 Bed Flat23A, Buckland Crescent, London, NW3 5DH23A, Buckland Crescent, London, NW3 5DH
• Sold Mar 2023£980,000 | 2 Bed FlatFlat 5, 21, Fitzjohns Avenue, London, NW3 5JYFlat 5, 21, Fitzjohns Avenue, London, NW3 5JY
• Sold Feb 2022£1,100,000 | 3 Bed FlatFlat 1, 3, Buckland Crescent, London, NW3 5DHFlat 1, 3, Buckland Crescent, London, NW3 5DH
• Sold Feb 2022£1,115,000 | 3 Bed FlatFlat 3, 21, Fitzjohns Avenue, London, NW3 5JYFlat 3, 21, Fitzjohns Avenue, London, NW3 5JY
• Sold Aug 2021£1,040,000 | 3 Bed FlatFlat D, 28, Fitzjohns Avenue, London, NW3 5NBFlat D, 28, Fitzjohns Avenue, London, NW3 5NB
• Sold Jun 2021£1,000,000 | 2 Bed FlatFlat 2, 22, Buckland Crescent, London, NW3 5DXFlat 2, 22, Buckland Crescent, London, NW3 5DX
• Sold Jan 2021£925,000 | 3 Bed FlatFlat 1, 35, Buckland Crescent, London, NW3 5DJFlat 1, 35, Buckland Crescent, London, NW3 5DJ
• Sold Jan 2021£850,000 | 2 Bed FlatFlat 4, 10, Fitzjohns Avenue, London, NW3 5NAFlat 4, 10, Fitzjohns Avenue, London, NW3 5NA
• Sold Dec 2020£974,000 | 3 Bed FlatFlat E, 1, Adamson Road, London, NW3 3HXFlat E, 1, Adamson Road, London, NW3 3HX
• Sold May 2018£1,015,000 | 3 Bed FlatFlat 3, 7, Buckland Crescent, London, NW3 5DHFlat 3, 7, Buckland Crescent, London, NW3 5DH
• Sold Jan 2018£1,192,500 | 3 Bed FlatFlat 1, 58, Eton Avenue, London, NW3 3HNFlat 1, 58, Eton Avenue, London, NW3 3HN
• Sold Oct 2017£1,232,000 | 3 Bed FlatFlat 2, 25, Belsize Park, London, NW3 4DUFlat 2, 25, Belsize Park, London, NW3 4DU
• Sold Jul 2017£950,000 | 3 Bed Flat14A, Buckland Crescent, London, NW3 5DX14A, Buckland Crescent, London, NW3 5DX
• Sold Jul 2017£1,250,000 | 2 Bed Flat15C , Buckland Crescent, London, NW3 5DH15C , Buckland Crescent, London, NW3 5DH
• Sold Jan 2007£530,000 | 3 Bed FlatFlat 5, 26, College Crescent, London, NW3 5LHFlat 5, 26, College Crescent, London, NW3 5LH

Agents in our network have reported 1 letting within 300 metres of 51B, Belsize Park across the last 2 years.

The newest of these is 15C, Fitzjohns Avenue, London, NW3 5JY, a leasehold flat let by Fine Living in February 2025.

• 
  Let agreed Feb 2025£ Undisclosed | 3 Bed Flat15C, Fitzjohns Avenue, London, NW3 5JY15C, Fitzjohns Avenue, London, NW3 5JY

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Our analysis of the public data ranks 51B, Belsize Park as the 182nd largest and the 143rd most expensive of the 423 addresses on Belsize Park, London, NW3.

Against the NW3 postcode district average, it is £316k less expensive than the typical property.

• Holy Trinity CofE Primary School, NW3

  300 m away
• Fitzjohn's Primary School

  800 m away
• Rosary Catholic Primary School

  800 m away

• The UCL Academy

  500 m away
• Harris Academy St John's Wood

  1.0 km away
• Haverstock School

  1.4 km away

• Swiss Cottage

  |

  300 m away
• Finchley Road

  |

  400 m away
• South Hampstead

  |

  600 m away

Environment Agency data suggests this area has a Very Low risk of flooding.