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Bricks&Logic is a trading name of Urban Markets Ltd
Company No. 11113204
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VAT No. GB 287 0845 68
Registered Address: 2 Leman St, London E1 8FA
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According to the public record, 21, Flask Walk is a period house with 1,367 ft2 of internal area and sits on a 107 m2 plot.
Houses of this size in this area normally have 4 bedrooms with a garden.
Based on available information, and assuming reasonable condition, the estimated sale value for 21, Flask Walk is £2,040,773 and the estimated rental value is £7,581 per month.
Flask Walk, London, NW3 is located in the borough of Camden within the NW3 postal district.
21, Flask Walk has no recent1 records in the the Land Registry and a single entry in the EPC database dated January 2026.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Decorative condition can have a big effect on a property's value and this effect varies depending on the type, size and location of the property.
If 21, Flask Walk is in very good condition we estimate a sale value of £2,142,811 and a rental value of £7,960 per month.
However, if the property needs a lot of cosmetic work we estimate a sale value of £1,897,918 and a rental value of £7,050 per month.
Over the last 12 months the sale value of 21 Flask Walk has decreased by an estimated £41,730 (2.0%) and its rental value has increased by an estimated £397 per month (5.2%), giving an expected gross yield of 4.5%.
According to data from HM Land Registry, 21, Flask Walk sits on a plot of 107m2.
We have plot size data on 15 out of 15 other houses in the postcode and 21, Flask Walk sits on the 13th largest plot.
21, Flask Walk has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 07 Jan 2026.
The property is connected to mains gas and has mostly double glazing. It is heated using Boiler and radiators, mains gas.
According to HM Land Registry, 21, Flask Walk was last sold on 15th March 1999 for £499,999 and was recorded as a freehold house.
The property has only had this single sale since 1995.
According to the Land Registry and our network of Estate Agents, there have been 3 sales of properties similar to 21, Flask Walk within a radius of 300 metres over the last 2 years.
The most recent example is Side Door, 16, Flask Walk, London, NW3 1HE, a freehold house which sold for £1,500,000 on the 28th November 2025.
Read more about house prices in NW3.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
Flask Walk, London, NW3 has a total of 81 addresses. According to our analysis of all the public data, 21, Flask Walk is the 30th largest and the 27th most expensive property on the street.
When compared to the postcode district it is £716k more expensive than the average property in NW3.
The nearest school is New End Primary School which is 100 metres away. The nearest train station is Hampstead which is 100 metres away.
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