27C, Belsize Square has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 14 Jan 2019.

The property is connected to mains gas and has single glazed windows. It is heated using electric storage heaters.

27C, Belsize Square last changed hands on 31st May 2024, selling for £594,000. The transaction was logged as a leasehold flat by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has dropped by 15.7% since May 2024.

• Sold May 2024£594,000

Land Registry records and our Estate Agent network show 25 sales of comparable properties within 260 metres of 27C, Belsize Square since 2009.

Most recently, 27D, Belsize Square, London, NW3 4HU, a leasehold flat, sold at £862,500 on the 30th January 2026.

Read more about house prices in NW3.

• Sold Jan 2026£862,500 | 3 Bed Flat27D, Belsize Square, London, NW3 4HU27D, Belsize Square, London, NW3 4HU
• Sold Jul 2025£700,000 | 2 Bed FlatFlat 8, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 8, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Sep 2024£910,500 | 2 Bed FlatFlat 2, 47, Belsize Square, London, NW3 4HNFlat 2, 47, Belsize Square, London, NW3 4HN
• Sold Sep 2024£800,000 | 2 Bed Flat19B, Belsize Park, London, NW3 4DU19B, Belsize Park, London, NW3 4DU
• Sold Jul 2022£1,076,150 | 2 Bed FlatFlat 5, 6, Strathray Gardens, London, NW3 4NYFlat 5, 6, Strathray Gardens, London, NW3 4NY
• Sold Feb 2022£1,100,000 | 3 Bed FlatFlat 1, 3, Buckland Crescent, London, NW3 5DHFlat 1, 3, Buckland Crescent, London, NW3 5DH
• Sold Jun 2021£965,000 | 3 Bed FlatFlat 3, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 3, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Apr 2021£717,500 | 2 Bed FlatFlat 12, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 12, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Dec 2020£650,000 | 2 Bed FlatFlat E, 25, Lancaster Grove, London, NW3 4EXFlat E, 25, Lancaster Grove, London, NW3 4EX
• Sold Aug 2020£698,000 | 2 Bed FlatFlat A, 11, Crossfield Road, London, NW3 4NSFlat A, 11, Crossfield Road, London, NW3 4NS
• Sold Jan 2020£945,000 | 2 Bed FlatFlat 5, 26, Belsize Park, London, NW3 4DUFlat 5, 26, Belsize Park, London, NW3 4DU
• Sold Dec 2019£650,000 | 2 Bed FlatFlat 7, 18, Lambolle Road, London, NW3 4HPFlat 7, 18, Lambolle Road, London, NW3 4HP
• Sold Jun 2019£985,000 | 2 Bed FlatFlat B, 25, Lancaster Grove, London, NW3 4EXFlat B, 25, Lancaster Grove, London, NW3 4EX
• Sold Apr 2017£1,040,000 | 2 Bed FlatFlat 2, 26, Belsize Avenue, London, NW3 4AUFlat 2, 26, Belsize Avenue, London, NW3 4AU
• Sold May 2016£1,000,000 | 3 Bed FlatFlat 7, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 7, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold May 2016£895,000 | 2 Bed Flat27A , Belsize Square, London, NW3 4HU27A , Belsize Square, London, NW3 4HU
• Sold Feb 2016£1,000,000 | 2 Bed FlatFlat 6, Jade House 12, Lancaster Grove, London, NW3 4NXFlat 6, Jade House 12, Lancaster Grove, London, NW3 4NX
• Sold Sep 2012£865,000 | 3 Bed FlatFlat D, 30, Belsize Square, London, NW3 4HUFlat D, 30, Belsize Square, London, NW3 4HU
• Sold Dec 2011£640,000 | 2 Bed FlatFlat B, 30, Belsize Square, London, NW3 4HUFlat B, 30, Belsize Square, London, NW3 4HU
• Sold Oct 2009£650,000 | 3 Bed FlatFlat 2, 12, Lancaster Drive, London, NW3 4HAFlat 2, 12, Lancaster Drive, London, NW3 4HA

Agents in our network have reported 2 lettings within 260 metres of 27C, Belsize Square across the last 2 years.

The newest of these is 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat let by Fine Living in February 2025.

• 
  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.

Our analysis of the public data ranks 27C, Belsize Square as the 115th largest and the 145th most expensive of the 264 addresses on Belsize Square, London, NW3.

Against the NW3 postcode district average, it is £551k less expensive than the typical property.

• Holy Trinity CofE Primary School, NW3

  600 m away
• Rosary Catholic Primary School

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

  800 m away

• The UCL Academy

  600 m away
• Harris Academy St John's Wood

  1.1 km away
• Haverstock School

  1.2 km away

• Belsize Park

  |

  500 m away
• Swiss Cottage

  |

  500 m away
• Finchley Road

  |

  700 m away

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