According to data from HM Land Registry, 25, Flask Walk sits on a plot of 113 m².

We have plot size data on 15 out of 15 other houses in the postcode and 25, Flask Walk sits on the 10th largest plot.

25, Flask Walk has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 03 Jan 2025.

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

According to HM Land Registry, 25, Flask Walk was last sold on 24th July 2002 for £1,120,000 and was recorded as a freehold house.

The property has had 3 sales since 1995.

According to the Land Registry and our network of Estate Agents, there have been 27 sales of properties similar to 25, Flask Walk within a radius of 300 metres since 2009.

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£2,185,000 | 4 Bed House17, The Mount, London, NW3 6SZ17, The Mount, London, NW3 6SZ
• Sold Mar 2023£2,300,000 | 3 Bed House19, Holly Walk, London, NW3 6RA19, Holly Walk, London, NW3 6RA
• Sold Oct 2022£1,900,000 | 3 Bed House22, Flask Walk, London, NW3 1HE22, Flask Walk, London, NW3 1HE
• Sold Jun 2022£1,830,000 | 4 Bed House39, Flask Walk, London, NW3 1HH39, Flask Walk, London, NW3 1HH
• Sold Sep 2021£2,500,000 | 4 Bed House35, Flask Walk, London, NW3 1HH35, Flask Walk, London, NW3 1HH
• Sold Jun 2021£2,000,000 | 3 Bed House29, Rudall Crescent, London, NW3 1RR29, Rudall Crescent, London, NW3 1RR
• Sold Mar 2021£1,725,000 | 4 Bed House9, Perrins Lane, London, NW3 1QY9, Perrins Lane, London, NW3 1QY
• Sold Jan 2021£1,595,000 | 3 Bed House47, Flask Walk, London, NW3 1HH47, Flask Walk, London, NW3 1HH
• Sold Oct 2020£2,400,000 | 4 Bed House2, The Mount, London, NW3 6SZ2, The Mount, London, NW3 6SZ
• Sold Sep 2020£1,640,000 | 3 Bed House14, Back Lane, London, NW3 1HL14, Back Lane, London, NW3 1HL
• Sold Feb 2020£1,300,000 | 4 Bed House8, Benhams Place, London, NW3 6QX8, Benhams Place, London, NW3 6QX
• Sold Jun 2018£2,850,000 | 4 Bed House5, Back Lane, London, NW3 1HL5, Back Lane, London, NW3 1HL
• Sold Aug 2015£2,000,000 | 3 Bed House2, Martys Yard, London, NW3 1QW2, Martys Yard, London, NW3 1QW
• Sold Jul 2015£2,025,000 | 4 Bed House38, New End Square, London, NW3 1LS38, New End Square, London, NW3 1LS
• Sold Jan 2015£1,350,000 | 4 Bed House7, Benhams Place, London, NW3 6QX7, Benhams Place, London, NW3 6QX
• Sold May 2014£1,770,000 | 4 Bed House6, Perrins Court, London, NW3 1QS6, Perrins Court, London, NW3 1QS
• Sold Dec 2011£1,600,000 | 3 Bed House7, Back Lane, London, NW3 1HL7, Back Lane, London, NW3 1HL
• Sold Jan 2011£1,495,000 | 4 Bed House18, Flask Walk, London, NW3 1HE18, Flask Walk, London, NW3 1HE
• Sold May 2009£800,000 | 3 Bed House11, Back Lane, London, NW3 1HL11, Back Lane, London, NW3 1HL

Flask Walk, London, NW3 has a total of 81 addresses. According to our analysis of all the public data, 25, Flask Walk is the 34th largest and the 27th most expensive property on the street.

When compared to the postcode district it is £670k 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.