23 Lemsford Lane, Welwyn Garden City AL8 6YN

End-Terrace house · Built 1967-1975 · Boiler and radiators, mains gas

Upgrade Plan

ED for £658 · £658 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Loft insulation£225typical£524.4 yrs+2.2 pts
Low energy lighting£20 – £45typical£56.8 yrs+0.2 pts
Heating controls£400typical£3910.1 yrs+1.7 pts · reaches D
Band A condensing boiler(optional, beyond D)£2,600typical£6739.0 yrs+2.9 pts
Solar water heating(optional, beyond D)£5,000typical£8450+ yrs+3.6 pts
Solar photovoltaic panels(optional, beyond D)£4,500 – £9,000typical£10050+ yrs+4.3 pts

Grants verified 20 August 2026. Costs are the register’s indicative ranges, except where marked typical, which this certificate did not price and which are taken instead from comparable homes of the same type. 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

£1,294
per year at grade E
£947
per year at grade D

The full plan saves £96 a year — a 14.6% annual return on £658.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2009, states £780 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

21 December 2009£174,000
28 August 1998£60,250

Estimated today: £332,870 HPI-indexed estimate, not a valuation

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.