35 Clayfields, Penn, High Wycombe HP10 8AT

Detached house · Built 1983-1990 · 126 m² · Boiler and radiators, mains gas

Upgrade Plan

DB for £9,063 · £4,531 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£15 – £30£1080.2 yrs+3.7 pts · reaches C
Low energy lighting£40£67.2 yrs+0.2 pts
Floor insulation£800 – £1,200£1277.9 yrs+4.4 pts
Heating controls£350 – £450£468.7 yrs+1.6 pts
Band A condensing boiler£2,200 – £3,000£7833.4 yrs+2.7 pts
Solar water heating£4,000 – £6,000£9850+ yrs+3.4 pts · reaches B
Solar photovoltaic panels(optional, beyond B)£9,000 – £14,000£11750+ yrs+4.0 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

£1,583
per year at grade D
£1,003
per year at grade B

The full plan saves £463 a year — a 5.1% annual return on £9,063.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2012, states £928 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

16 April 1998£195,000

Estimated today: £812,108 HPI-indexed estimate, not a valuation

Clayfields: 54 sales since 1995 · £567,292 average over 10 years

Schools nearby

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

SchoolPhaseDistanceProgress
Manor Farm Community Infant SchoolPrimary0.2 mi
Manor Farm Junior SchoolPrimary0.2 mi
Tylers Green Middle SchoolPrimary0.7 mi
Sir William Ramsay SchoolSecondary0.6 miAttainment 8 35.4 · no Progress 8 published
Holmer Green Senior SchoolSecondary1.5 miProgress 8 +0.40 · above average (2023/24)
The Highcrest AcademySecondary1.6 miProgress 8 -0.39 · below 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.

4.5
crimes a month
49
in the last 12 months
Violence and sexual offences
most common · 45% of the total

Police.uk street-level data for LSOA E01017942, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Clayfields

How this home sits against its street.

23
graded homes
66
average score
D
most common grade
0.0
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.