331 Halfway Street, Sidcup DA15 8DP

Detached house · Built 1930-1949 · 123 m² · Owner-Occupied · Boiler and radiators, mains gas

Upgrade Plan

EB for £15,700 · £5,233 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£30£2510.1 yrs+6.2 pts
Low energy lighting£20£131.6 yrs+0.3 pts
Floor insulation£1,200 – £200£2932.4 yrs+7.2 pts · reaches D
Heating controls£450£1074.2 yrs+2.6 pts
Band A condensing boiler£3,000 – £0£1808.3 yrs+4.5 pts
Solar photovoltaic panels£5,500 – £500£27211.0 yrs+6.7 pts · reaches C
Solar water heating£6,000 – £0£22813.2 yrs+5.6 pts
Solid wall insulation£14,000 – £0£31722.1 yrs+7.8 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

£2,761
per year at grade E
£1,100
per year at grade B

The full plan saves £1,661 a year — a 10.6% annual return on £15,700.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2020, states £1,749 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

No sale recorded for this address since 1995.

Halfway Street: 295 sales since 1995 · £509,626 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Alderwood Primary SchoolPrimary0.3 mi
Dulverton Primary SchoolPrimary0.5 mi
Our Lady of the Rosary Catholic Primary SchoolPrimary0.5 mi
Leigh Stationers' AcademySecondary0.8 miProgress 8 -0.33 · below average (2023/24)
St Thomas More Catholic Comprehensive SchoolSecondary1.0 miProgress 8 +0.74 · well above average (2023/24)
Harris Academy FalconwoodSecondary1.0 miProgress 8 -0.02 · 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.

10.4
crimes a month
94
in the last 12 months
Violence and sexual offences
most common · 31% of the total

Police.uk street-level data for LSOA E01000344, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Halfway Street

How this home sits against its street.

176
graded homes
63
average score
D
most common grade
-20.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.