Energy Performance
EPC Impact Calculator
See how improving your EPC rating affects property value, mortgage lending, and energy costs. Includes upgrade measures and costs.
£
Value Uplift
+£31,579
+10.5%
Extra Borrowing
+£40,263
LTV: 75% → 80%
Energy Costs
Current (E)£2,100/yr
After upgrade (C)£1,200/yr
Annual saving£900/yr
Upgrade Measures
Condensing boiler
£2,500–£4,000
Replace old boiler with A-rated condensing boiler
Saves ~£300/yr
Double glazing
£3,000–£7,000
Replace single-glazed windows
Saves ~£200/yr
Solar panels (4kW)
£5,000–£8,000
Roof-mounted PV panels
Saves ~£400/yr
Underfloor insulation
£500–£1,500
Insulate suspended timber floor
Saves ~£100/yr
Smart heating controls
£200–£500
Programmable thermostat, TRVs
Saves ~£80/yr
Total upgrade cost£11,200–£21,000
Payback from value uplift: ~0.5 years
Meets minimum EPC E standard for rental properties
Pro Features
Grant eligibility
£5,000
Contractor quotes
3 local
Full EPC report
Ready
Export PDF
Ready
Estimate only — EPC value impacts are based on industry research averages. Actual impact varies by property and local market. Upgrade costs are approximate. This is not financial advice.