According to data from HM Land Registry, 37, Flask Walk sits on a plot of 162 m².

We have plot size data on 15 out of 15 other houses in the postcode and 37, Flask Walk sits on the 5th largest plot.

37, Flask Walk has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Jul 2022.

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, 37, Flask Walk was last sold on 4th September 2012 for £1,600,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

Since September 2012, the market for similar properties has risen by 27.4%.

According to the Land Registry and our network of Estate Agents, there have been 30 sales of properties similar to 37, Flask Walk within a radius of 300 metres since 2008.

The most recent example is 24, Flask Walk, London, NW3 1HE, a freehold house which sold for £1,800,000 on the 5th June 2026.

Read more about house prices in NW3.

• Sold Jun 2026£1,800,000 | 3 Bed House24, Flask Walk, London, NW3 1HE24, Flask Walk, London, NW3 1HE
• Sold Dec 2025£1,300,000 | 3 Bed HouseGoulding House 85, Heath Street, London, NW3 6UGGoulding House 85, Heath Street, London, NW3 6UG
• Sold Jun 2025£2,150,000 | 3 Bed House40, Willow Road, London, NW3 1TN40, Willow Road, London, NW3 1TN
• Sold May 2025£2,000,000 | 3 Bed House11, Hollyberry Lane, London, NW3 6QT11, Hollyberry Lane, London, NW3 6QT
• Sold Apr 2025£5,936,235 | 3 Bed House2-6, Hampstead High Street, London, NW3 1PR2-6, Hampstead High Street, London, NW3 1PR
• Sold Sep 2022£3,160,000 | 5 Bed House12-14, Holly Hill, London, NW3 6SE12-14, Holly Hill, London, NW3 6SE
• Sold Mar 2022£2,500,000 | 3 Bed House12, Old Brewery Mews, London, NW3 1PZ12, Old Brewery Mews, London, NW3 1PZ
• Sold Jun 2021£1,200,000 | 3 Bed House22, Holly Hill, London, NW3 6SE22, Holly Hill, London, NW3 6SE
• Sold Jan 2021£1,430,000 | 3 Bed House47A, Hampstead High Street, London, NW3 1QG47A, Hampstead High Street, London, NW3 1QG
• Sold Nov 2018£1,390,000 | 3 Bed House59, Flask Walk, London, NW3 1EY59, Flask Walk, London, NW3 1EY
• Sold Sep 2018£1,775,000 | 3 Bed House26, Perrins Lane, London, NW3 1QY26, Perrins Lane, London, NW3 1QY
• Sold May 2018£850,000 | 3 Bed House7, New End, London, NW3 1JD7, New End, London, NW3 1JD
• Sold Aug 2015£1,825,000 | 3 Bed House18, Spencer Walk, London, NW3 1QZ18, Spencer Walk, London, NW3 1QZ
• Sold Aug 2014£1,616,400 | 3 Bed House57, Flask Walk, London, NW3 1EY57, Flask Walk, London, NW3 1EY
• Sold Oct 2013£1,195,500 | 3 Bed House2, Lakis Close, London, NW3 1JX2, Lakis Close, London, NW3 1JX
• Sold Dec 2011£1,600,000 | 3 Bed House7, Back Lane, London, NW3 1HL7, Back Lane, London, NW3 1HL
• Sold Dec 2009£900,000 | 3 Bed House9, New End, London, NW3 1JD9, New End, London, NW3 1JD
• Sold Jun 2009£1,237,500 | 3 Bed House51, Flask Walk, London, NW3 1HH51, Flask Walk, London, NW3 1HH
• Sold May 2009£800,000 | 3 Bed House11, Back Lane, London, NW3 1HL11, Back Lane, London, NW3 1HL
• Sold Dec 2008£835,000 | 3 Bed House13, Back Lane, London, NW3 1HL13, Back Lane, London, NW3 1HL

Flask Walk, London, NW3 has a total of 81 addresses. According to our analysis of all the public data, 37, Flask Walk is the 47th largest and the 39th most expensive property on the street.

When compared to the postcode district it is £405k more expensive than the average property in NW3.

• New End Primary School

  100 m away
• Hampstead Parochial Church of England Primary School

  200 m away
• Christ Church Primary School, Hampstead

  300 m away

• The UCL Academy

  1.8 km away
• William Ellis School

  1.8 km away
• Parliament Hill School

  1.9 km away

• Hampstead

  |

  100 m away
• Hampstead Heath

  |

  800 m away
• Finchley Road & Frognal

  |

  900 m away

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