21 West Common, Redbourn, St. Albans AL3 7DF

Detached house · Built 1900-1929 · 137 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

Get upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation(optional, beyond C)£5,000 – £10,000£11550+ yrs+3.0 pts
Solid wall insulation(optional, beyond C)£7,500 – £11,000£12450+ yrs+3.2 pts
Solar photovoltaic panels(optional, beyond C)£8,000 – £10,000£10650+ yrs+2.8 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges. Savings are restated at the fuel prices assumed in July 2026. Points per measure are estimated from 19.9 million certificates and rescaled to this home’s own certificate delta; the total is the register’s figure.

Running costs

£1,721
per year at grade C
£1,376
per year at grade C

Energy costs as modelled on the certificate, not a bill.

Sold prices

27 September 2012£550,000
6 September 2001£335,000

Estimated today: £954,493 HPI-indexed estimate, not a valuation

West Common: 26 sales since 1995 · £431,500 average over 10 years

Schools nearby

The schools’ own performance — Progress 8 shows value added, not just raw results.

SchoolPhaseDistanceProgress
Redbourn Primary SchoolPrimary0.5 mi
Brockswood Primary SchoolPrimary1.6 mi
Holtsmere End Junior SchoolPrimary2.0 mi
The Astley Cooper SchoolSecondary2.2 miProgress 8 -0.60 · well below average (2023/24)
Roundwood Park SchoolSecondary2.3 miProgress 8 +0.79 · well above average (2023/24)
St George's SchoolSecondary3.0 miProgress 8 +0.65 · well above average (2023/24)

Schools from the DfE register, performance from the KS4 performance tables. Progress 8 is a GCSE measure, so primaries have none. Distance is straight-line from the postcode, not a catchment: admission is decided by the school, not by us.

Area context

Police-recorded crime for the wider neighbourhood, not this address. We grade homes, never neighbourhoods — so this is reported as a count, not a rating.

11.8
crimes a month
130
in the last 12 months
Anti-social behaviour
most common · 29% of the total

Police.uk street-level data for LSOA E01023722, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

West Common

How this home sits against its street.

8
graded homes
56.1
average score
E
most common grade
+13.9
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.