41D, Belsize Square has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 28 Mar 2018.

The property is connected to mains gas and has single glazed windows. It is heated using a boiler and radiators (mains gas).

According to HM Land Registry, 41D, Belsize Square was last sold on 8th January 2021 for £525,000 and was recorded as a leasehold flat.

The property has only had this single sale since 1995.

Since January 2021, the market for similar properties has dropped by 27.5%.

• Sold Jan 2021£525,000

According to the Land Registry and our network of Estate Agents, there have been 27 sales of properties similar to 41D, Belsize Square within a radius of 260 metres since 2008.

The most recent example is Flat 2, 22, Belsize Avenue, London, NW3 4AU, a leasehold flat which sold for £545,000 on the 5th December 2025.

Read more about house prices in NW3.

• Sold Dec 2025£545,000 | 1 Bed FlatFlat 2, 22, Belsize Avenue, London, NW3 4AUFlat 2, 22, Belsize Avenue, London, NW3 4AU
• Sold Sep 2023£617,500 | 1 Bed FlatFlat D, 10, Belsize Square, London, NW3 4HTFlat D, 10, Belsize Square, London, NW3 4HT
• Sold Jul 2023£525,000 | 1 Bed FlatFlat 5, 5, Belsize Avenue, London, NW3 4BLFlat 5, 5, Belsize Avenue, London, NW3 4BL
• Sold Nov 2022£530,000 | 1 Bed FlatFlat 4, 26, Belsize Avenue, London, NW3 4AUFlat 4, 26, Belsize Avenue, London, NW3 4AU
• Sold Sep 2022£615,000 | 1 Bed FlatFlat 3, Claridge House 13, Belsize Park, London, NW3 4ESFlat 3, Claridge House 13, Belsize Park, London, NW3 4ES
• Sold Mar 2022£519,000 | 1 Bed Flat4E , Belsize Square, London, NW3 4HT4E , Belsize Square, London, NW3 4HT
• Sold Jun 2021£531,000 | 1 Bed FlatFlat 6, 26, Belsize Avenue, London, NW3 4AUFlat 6, 26, Belsize Avenue, London, NW3 4AU
• Sold Jun 2021£535,000 | 1 Bed FlatFlat 7, 5, Belsize Avenue, London, NW3 4BLFlat 7, 5, Belsize Avenue, London, NW3 4BL
• Sold Feb 2021£515,000 | 1 Bed Flat16D , Belsize Square, London, NW3 4HT16D , Belsize Square, London, NW3 4HT
• Sold Dec 2019£490,000 | 1 Bed FlatFlat 6, 5, Belsize Avenue, London, NW3 4BLFlat 6, 5, Belsize Avenue, London, NW3 4BL
• Sold May 2018£550,000 | 1 Bed FlatFlat 12, 28, Belsize Avenue, London, NW3 4AUFlat 12, 28, Belsize Avenue, London, NW3 4AU
• Sold Sep 2016£525,000 | 1 Bed FlatFlat 1, 42, Belsize Park Gardens, London, NW3 4LYFlat 1, 42, Belsize Park Gardens, London, NW3 4LY
• Sold Mar 2016£602,500 | 1 Bed Flat16G , Belsize Square, London, NW3 4HT16G , Belsize Square, London, NW3 4HT
• Sold Feb 2016£659,000 | 1 Bed Flat41C, Belsize Square, London, NW3 4HN41C, Belsize Square, London, NW3 4HN
• Sold Mar 2014£525,000 | 1 Bed FlatFlat 1, 16, Belsize Avenue, London, NW3 4AUFlat 1, 16, Belsize Avenue, London, NW3 4AU
• Sold Dec 2013£625,000 | 1 Bed FlatFlat E, 10, Belsize Square, London, NW3 4HTFlat E, 10, Belsize Square, London, NW3 4HT
• Sold Jun 2013£360,000 | 1 Bed FlatFlat 4, 5, Belsize Avenue, London, NW3 4BLFlat 4, 5, Belsize Avenue, London, NW3 4BL
• Sold Mar 2012£357,500 | 1 Bed FlatFlat 5, 38, Belsize Square, London, NW3 4HLFlat 5, 38, Belsize Square, London, NW3 4HL
• Sold Dec 2011£433,300 | 1 Bed FlatFlat 3, 20, Belsize Park Gardens, London, NW3 4LHFlat 3, 20, Belsize Park Gardens, London, NW3 4LH
• Sold Mar 2008£308,000 | 1 Bed FlatFlat 8, 17, Crossfield Road, London, NW3 4NTFlat 8, 17, Crossfield Road, London, NW3 4NT

Our network of Estate Agents reports 2 lets within 260 metres of 41D, Belsize Square over the last 2 years.

Most recently, 3B , Lancaster Drive, London, NW3 4EY, a leasehold flat, was 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.

Belsize Square, London, NW3 has a total of 264 addresses. According to our analysis of all the public data, 41D, Belsize Square is the 237th largest and the 225th most expensive property on the street.

When compared to the postcode district it is £786k less expensive than the average property in NW3.

• Rosary Catholic Primary School

  500 m away
• Holy Trinity CofE Primary School, NW3

  600 m away
• Fitzjohn's Primary School

  700 m away

• The UCL Academy

  700 m away
• Harris Academy St John's Wood

  1.2 km away
• Haverstock School

  1.2 km away

• Belsize Park

  |

  500 m away
• Swiss Cottage

  |

  600 m away
• Finchley Road

  |

  700 m away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.