20 Goonbell, St. Agnes TR5 0PL

End-Terrace house · Built before 1900 · 73 m² · Owner-Occupied · Boiler and radiators, dual fuel (mineral and wood)

Upgrade Plan

FB for £47,210 · £11,803 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
High-performance doors£1,000 – £0£578.8 yrs+7.1 pts
Low energy lighting£35£311.2 yrs+0.4 pts
Flat roof insulation£850 – £1,500£5421.7 yrs+6.7 pts · reaches E
Floor insulation£4,000 – £6,000£7150+ yrs+8.9 pts
Solar water heating£4,000 – £6,000£5550+ yrs+6.9 pts · reaches D
Solar photovoltaic panels£5,000 – £8,000£6650+ yrs+8.2 pts
Solid wall insulation£4,000 – £14,000£7750+ yrs+9.6 pts · reaches C
Wind turbine£15,000 – £25,000£5950+ yrs+7.3 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

£1,382
per year at grade F
£939
per year at grade B

The full plan saves £443 a year — a 0.9% annual return on £47,210.

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

30 March 2016£300,000
23 January 2008£275,000

Estimated today: £412,555 HPI-indexed estimate, not a valuation

Schools nearby

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

SchoolPhaseDistanceProgress
Mithian SchoolPrimary0.8 mi
St Agnes AcademyPrimary0.9 mi
Mount Hawke AcademyPrimary1.7 mi
Richard Lander SchoolSecondary4.9 miProgress 8 +0.07 · average (2023/24)
Redruth SchoolSecondary5.2 miProgress 8 -0.17 · average (2023/24)
Pool AcademySecondary6.3 miProgress 8 -0.59 · well 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.

4.1
crimes a month
33
in the last 12 months
Violence and sexual offences
most common · 55% of the total

Police.uk street-level data for LSOA E01034860, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.