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Get started21 Hillfield Avenue is a two-bedroom semi-detached house in Barnet, London, London (NW9 6NY). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1930-1949 and council tax band E. At 72 m² this is the 3rd smallest of 17 units on EPC record in the building, where floor areas span 27–142 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (April 2023) shows a C (score 75), near the top of the C band. When first surveyed in July 2012 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and window efficiency went from Poor to Good; while hot-water efficiency dropped from Very Good to Good.
2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. At 72 m² it's 20.4% smaller than the typical home in the postcode (91 m² median across 16 EPCs). Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). On a £-per-square-foot basis, the last sale (£781/sq ft) was about 243.4% above the typical sold price in the postcode. Sold August 2018 for £605,000.
21 Hillfield Avenue has 2 separate extension applications on the council record.
Extension: Single storey · Rear of property
Single storey rear extension
21 Hillfield Avenue valuation sits well clear of the typical sold price in this postcode.
£621,000
Modelled from EPC, postcode comparables.
£605,000
Recorded with HM Land Registry.
Rail-style transport is unusually close for this postcode.
Crime
15/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Sheaveshill Avenue — bus stop.

Daytime· 07:00 – 23:00
55.4dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Loft insulation installed or upgraded to 250mm+
Are we missing something? Tell us about home improvements to help adjust your valuation.
Extension: Single storey · Rear of property
Single storey rear extension with a proposed depth of 6 metres from original rear wall, eaves height of 2.86 metres and maximum height of 3 metres.
17 August 2018Most recent
£605,000
Median price across the last 5 sales in NW9 6NY: £380,000 (2023–2009).
NW9 6DT
Closest school
0.2 km
Colindale Primary School. 47 schools nearby.
Night-time· 23:00 – 07:00
45.8dB
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