Flat 3 Gorffwysfa, School Street, Henllan, Denbigh LL16 5BA

Semi-Detached flat · Built 1900-1929 · 32 m² · Rented (social) · Electric storage heaters

Upgrade Plan

EC for £575 · £288 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
High-retention storage heaters£300 – £400£4320.8 yrs+16.2 pts · reaches D
Loft insulation£100 – £350£1042.2 yrs+3.9 pts · reaches C
Solid wall insulation(optional, beyond C)£4,000 – £14,000£23738.0 yrs+8.9 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

£1,322
per year at grade E
£549
per year at grade C

The full plan saves £536 a year — a 93.2% annual return on £575.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2013, states £653 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

23 December 2015£135,000
9 December 2010£85,000
1 September 2000£53,500
22 November 1996£44,250

Estimated today: £177,267 HPI-indexed estimate, not a valuation

School Street: 35 sales since 1995 · £151,517 average over 10 years

Schools nearby

The DfE register covers England. Welsh schools are held in a separate Welsh Government register, which we have not ingested yet.

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.

20.9
crimes a month
230
in the last 12 months
Violence and sexual offences
most common · 51% of the total

Police.uk street-level data for LSOA W01000199, to 2026-06. An LSOA holds about 1,500 people, so this covers far more than one street.

School Street

How this home sits against its street.

16
graded homes
43.7
average score
E
most common grade
+6.3
this home vs street
Energy data © Crown copyright, EPB Register© HM Land Registry, OGL v3We grade homes, never neighbourhoods.