Second Floor Flat, 31 Clerkenwell Green, London EC1R 0DU

Mid-Terrace flat · Built before 1900 · 99 m² · Owner-Occupied · Air source heat pump, warm air, electric

Upgrade Plan

D → C for £743 · £743 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation—£15 – £30£3880.1 yrs+8.4 pts
Low energy lighting—£65£203.3 yrs+0.4 pts
Shower heat recovery—£585 – £725£758.8 yrs+1.6 pts · reaches C
Solid wall insulation(optional, beyond C)—£4,000 – £14,000£49118.3 yrs+10.6 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

£1,885
per year at grade D
£911
per year at grade C

The full plan saves £483 a year — a 65.0% annual return on £743.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2019, states £1,138 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

No sale recorded for this address since 1995.

Schools nearby

No school in the register within reach of this postcode.

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