4 Ronaldstone Road, Sidcup DA15 8QU

Semi-Detached house · Built 1950-1966 · 85 m² · Owner-occupied · No system present: electric heaters assumed

Upgrade Plan

GB for £31,545 · £6,309 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Floor insulation£800 – £1,200£2813.6 yrs+11.4 pts
Low energy lighting£45£123.7 yrs+0.5 pts
Change of heating system£3,000 – £7,000£8026.2 yrs+32.5 pts · reaches E
Solar water heating£4,000 – £6,000£21822.9 yrs+8.8 pts · reaches D
Solid wall insulation£4,000 – £14,000£30429.6 yrs+12.3 pts · reaches C
Solar photovoltaic panels£9,000 – £14,000£26044.2 yrs+10.5 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

£2,469
per year at grade G
£591
per year at grade B

The full plan saves £1,878 a year — a 6.0% annual return on £31,545.

Energy costs as modelled on the certificate, not a bill. This fuel has too few recent certificates to restate at today's prices.

Sold prices

29 November 2012£211,000
27 November 2003£146,000

Estimated today: £435,160 HPI-indexed estimate, not a valuation

Ronaldstone Road: 62 sales since 1995 · £477,912 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Our Lady of the Rosary Catholic Primary SchoolPrimary0.1 mi
Days Lane Primary SchoolPrimary0.3 mi
Alderwood Primary SchoolPrimary0.3 mi
Harris Academy FalconwoodSecondary0.6 miProgress 8 -0.02 · average (2023/24)
Leigh Stationers' AcademySecondary0.8 miProgress 8 -0.33 · below average (2023/24)
Blackfen School for GirlsSecondary0.9 miProgress 8 -0.14 · 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.

5.5
crimes a month
33
in the last 12 months
Anti-social behaviour
most common · 33% of the total

Police.uk street-level data for LSOA E01000341, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Ronaldstone Road

How this home sits against its street.

28
graded homes
58.2
average score
D
most common grade
-53.2
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.