68 Marmet Avenue, Letchworth Garden City SG6 4QF

Mid-Terrace flat · Built 1991-1995 · 29 m² · Rented (Private) · Electric storage heaters

Upgrade Plan

DC for £30 · £30 a gradeGet upgrade quotes
MeasureGrantNet costSaving / yrPaybackGrade effect
Hot water cylinder insulation£20 – £40£480.6 yrs+1.8 pts · reaches C
High-retention storage heaters(optional, beyond C)£800 – £1,600£11210.8 yrs+4.2 pts
Loft insulation(optional, beyond C)£900 – £1,200£2738.9 yrs+1.0 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

£908
per year at grade D
£721
per year at grade C

The full plan saves £48 a year — a 160.0% annual return on £30.

Restated at the fuel prices assumed in July 2026. This certificate, assessed in 2026, states £918 a year at the prices assumed then. Modelled costs, not a bill.

Sold prices

31 March 2017£135,000
22 June 2005£95,000
22 August 2003£78,000
20 June 1996£28,995

Estimated today: £149,380 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.