21 Brownswood Road is a three-bedroom detached house in Beaconsfield (HP9 2NU). It has a recorded floor area of 207 m² (around 2228 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (March 2025) shows a D (score 66), on the cusp of jumping into the C band. When first surveyed in October 2018 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Good and hot-water efficiency went from Average to Good; while roof efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). Other recorded features include a conservatory.
Today's modelled estimate of £1,467,000 is 22.2% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£539/sq ft) was about 23.7% above the typical sold price in the postcode. At 207 m² it's 24.6% smaller than the typical home in the postcode (275 m² median across 16 EPCs). Last sale on file: £1,200,000 in November 2019.
21 Brownswood Road's carbon output runs well above what efficient homes in the postcode produce.
No planning applications are recorded against 21 Brownswood Road, Beaconsfield, HP9 2NU. The full report also covers planning activity across the surrounding area.
Full planning data for 21 Brownswood Road, Beaconsfield, HP9 2NU
Every application and decision on this property and nearby, in full, in the report.
£1,467,000
Modelled from EPC, postcode comparables.
£1,200,000
Recorded with HM Land Registry.
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On habitable rooms, 21 Brownswood Road runs well behind the street norm.
Price per m²
£5,797
Street avg £6,268
Floor Area
207 m²
Street avg 302 m²
Habitable Rooms
7 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Sandleswood End H&R — bus stop.

Daytime· 07:00 – 23:00
46.3dB

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Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Cavity wall insulation installed
Hot water efficiency improved
Wall insulation improved
20 November 2019Most recent
£1,200,000
Median price across the last 5 sales in HP9 2NU: £1,950,000 (2025–2023).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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Street avg 10 rooms
CO₂ Emissions
7.8 t/year
Street avg 7.7 t/year
HP9 2LZ
Closest school
1.0 km
St Mary and All Saints CofE Primary School. 6 schools nearby.
Night-time· 23:00 – 07:00
37.7dB