21 Cromwell Road, Cambridge CB1 3EB

Semi-Detached house · Built 1930-1949 · 89 m² · Rented (Private) · Boiler and radiators, mains gas

Upgrade Plan

DB for £19,500 · £9,750 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation£800 – £1,200£1128.9 yrs+5.6 pts · reaches C
Solar photovoltaic panels£3,500 – £5,500£10443.3 yrs+5.1 pts
Solar water heating£4,000 – £6,000£8750+ yrs+4.3 pts
Solid wall insulation£4,000 – £14,000£12150+ yrs+6.0 pts · reaches B

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

£1,332
per year at grade D
£907
per year at grade B

The full plan saves £425 a year — a 2.2% annual return on £19,500.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2021, states £805 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

19 January 2010£250,000
25 May 2001£127,250

Estimated today: £472,114 HPI-indexed estimate, not a valuation

Cromwell Road: 527 sales since 1995 · £345,362 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
St Philip's CofE Aided Primary SchoolPrimary0.3 mi
St Matthew's Primary SchoolPrimary0.5 mi
Ridgefield Primary SchoolPrimary0.7 mi
Coleridge Community CollegeSecondary0.7 miProgress 8 +0.23 · above average (2023/24)
Parkside Community CollegeSecondary0.8 miProgress 8 +0.80 · well above average (2023/24)
St Bede's Inter-Church SchoolSecondary1.1 miProgress 8 +1.02 · 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.

12.3
crimes a month
135
in the last 12 months
Violence and sexual offences
most common · 41% of the total

Police.uk street-level data for LSOA E01017997, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Cromwell Road

How this home sits against its street.

321
graded homes
75.6
average score
B
most common grade
-10.6
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.