Flat 3, 15, Belsize Park has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 21 Feb 2011.

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

According to the Land Registry and our network of Estate Agents, there have been 13 sales of properties similar to Flat 3, 15, Belsize Park within a radius of 260 metres since 2009.

The most recent example is 37A, Belsize Park Gardens, London, NW3 4JJ, a leasehold flat which sold for £2,180,000 on the 5th September 2025.

Read more about house prices in NW3.

• Sold Sep 2025£2,180,000 | 4 Bed Flat37A, Belsize Park Gardens, London, NW3 4JJ37A, Belsize Park Gardens, London, NW3 4JJ
• Sold Dec 2024£94,000 | 4 Bed Flat7A, Belsize Park Gardens, London, NW3 4LB7A, Belsize Park Gardens, London, NW3 4LB
• Sold Nov 2021£4,060,118 | 4 Bed FlatFlat 1, Belsize Studios, Glenilla Road, London, NW3 4ATFlat 1, Belsize Studios, Glenilla Road, London, NW3 4AT
• Sold Aug 2019£1,550,000 | 4 Bed FlatFlat 3, 10, Lyndhurst Gardens, London, NW3 5NRFlat 3, 10, Lyndhurst Gardens, London, NW3 5NR
• Sold May 2019£95,000 | 4 Bed FlatApartment 10, 21, Belsize Lane, London, NW3 5ASApartment 10, 21, Belsize Lane, London, NW3 5AS
• Sold Jun 2017£2,100,000 | 4 Bed FlatFlat 4, 16, Lyndhurst Gardens, London, NW3 5NRFlat 4, 16, Lyndhurst Gardens, London, NW3 5NR
• Sold Apr 2017£1,900,000 | 4 Bed FlatFlat D, 31, Lancaster Grove, London, NW3 4EXFlat D, 31, Lancaster Grove, London, NW3 4EX
• Sold May 2015£2,150,000 | 4 Bed FlatFlat 2, 42, Belsize Square, London, NW3 4HNFlat 2, 42, Belsize Square, London, NW3 4HN
• Sold Jun 2012£280,100 | 4 Bed FlatFlat A, 38, Belsize Avenue, London, NW3 4AHFlat A, 38, Belsize Avenue, London, NW3 4AH
• Sold Sep 2011£1,800,000 | 4 Bed FlatFlat A, 31, Lancaster Grove, London, NW3 4EXFlat A, 31, Lancaster Grove, London, NW3 4EX
• Sold Apr 2010£1,150,000 | 4 Bed FlatFlat 1, 35, Belsize Park Gardens, London, NW3 4JJFlat 1, 35, Belsize Park Gardens, London, NW3 4JJ
• Sold Jan 2010£731,000 | 4 Bed FlatFlat 4, 40, Belsize Square, London, NW3 4HLFlat 4, 40, Belsize Square, London, NW3 4HL
• Sold Nov 2009£1,231,000 | 4 Bed FlatFlat 6, 35, Belsize Park Gardens, London, NW3 4JJFlat 6, 35, Belsize Park Gardens, London, NW3 4JJ

Our network of Estate Agents reports 2 lets within 260 metres of Flat 3, 15, Belsize Park 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 Park, London, NW3 has a total of 423 addresses. According to our analysis of all the public data, Flat 3, 15, Belsize Park is the 16th largest and the 16th most expensive property on the street.

When compared to the postcode district it is £701k more expensive than the average property in NW3.

• Holy Trinity CofE Primary School, NW3

  500 m away
• Rosary Catholic Primary School

  500 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

  1.3 km away

• Belsize Park

  |

  500 m away
• Swiss Cottage

  |

  600 m away
• Finchley Road

  |

  600 m away

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