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What home upgrades cost

Every measure priced from the recommendations on every current certificate in England & Wales — ranked by what an EPC point actually costs, cheapest first.

MeasureTypical costSaving / yrTypical pointsCost per point

1Hot water cylinder insulationRecommended on 1,756,639 certificates£23 – £300£111+4.9£5 2DraughtproofingRecommended on 704,782 certificates£100£127+4.8£21 3Loft insulationRecommended on 2,057,112 certificates£225£57+2.7£83 4High-retention storage heatersRecommended on 1,108,603 certificates£1,000 – £1,500£279+11.3£115 5Low energy lightingRecommended on 6,854,197 certificates£20 – £50£5+0.3£120 6Party wall insulationRecommended on 320,805 certificates£450£41+3.1£145 7Flue gas heat recoveryRecommended on 232,651 certificates£650 – £900£102+5.6£162 8Heating controlsRecommended on 2,869,229 certificates£400£45+2.1£192 9High-performance doorsRecommended on 299,508 certificates£500 – £1,000£80+4.6£219 10Cavity wall insulationRecommended on 2,985,803 certificates£1,000£92+4.3£234 11Biomass boilerRecommended on 10,858 certificates · £5,000 Boiler Upgrade Scheme applied£5,000£435+19.0£263 12Room-in-roof insulationRecommended on 629,099 certificates£2,100£241+7.9£266 13Flat roof insulationRecommended on 846,943 certificates£1,050 – £1,175£102+4.3£271 14Change of heating systemRecommended on 200,495 certificates£5,000£470+16.3£307 15Floor insulationRecommended on 10,202,607 certificates£1,000 – £5,000£97+5.7£525 16Wind turbineRecommended on 821,642 certificates£2,750 – £20,000£64+4.7£580 17Air or ground source heat pumpRecommended on 8,814 certificates · £7,500 Boiler Upgrade Scheme applied£10,000£423+14.6£686 18Shower heat recoveryRecommended on 285,291 certificates£655 – £725£25+0.9£697 19Band A condensing boilerRecommended on 3,139,265 certificates£2,600£76+3.5£741 20Solar photovoltaic panelsRecommended on 12,374,251 certificates£4,500 – £9,000£72+5.3£851 21Warm air unit replacementRecommended on 41,416 certificates£1,875£45+2.0£924 22Solar water heatingRecommended on 10,710,274 certificates£5,000£59+4.4£1,129 23Solid wall insulationRecommended on 4,401,238 certificates£9,000£143+6.2£1,456 24Double glazingRecommended on 1,589,525 certificates£1,200 – £4,900£48+2.1£2,367

Costs are the register’s own indicative ranges across every home recommended the measure, after the fixed grants that apply to it. A grade band is 11–14 points wide, so a full grade from the top of this list often costs under £1,000. Grants verified 20 August 2026.

Which of these does your home need?

Your Upgrade Plan ranks them for your exact home — with grants applied.

Costs from EPC recommendations © Crown copyright, EPB RegisterGrants verified 20 August 2026We grade homes, never neighbourhoods.