Sustainable Housing Calculator
Compare energy-improvement works with estimated utility savings, property value uplift and optional green-finance savings across five European markets.
Property market
Every financial assumption is editable. Incentives and green-mortgage conditions are not guaranteed and must be confirmed with the relevant provider.
Property and energy baseline
Energy improvement plan
Optional green financing
Sustainability decision snapshot
🇵🇹 Portugal · 35/100
Green finance comparison
Points to validate
- The simple payback exceeds 15 years under these assumptions.
- No green-rate discount is included. Confirm whether your lender offers one.
Typical measures to investigate
How the estimate works
- 1. Enter an energy baseline, a target rating and your project budget.
- 2. Set assumed support, utility savings, value uplift and any green-rate discount.
- 3. Review net cost, payback, five-year result and issues requiring professional confirmation.
Certification and policy context
This calculator is an educational screening estimate. It does not issue an EPC, verify grant eligibility, value a property or offer lending advice. Obtain certified technical, legal and lending advice before committing to works.
SCE / ADENERelated tools
Frequently asked questions
Does this calculate my EPC rating?
No. An EPC, DPE, CEE or Energieausweis must be issued under the applicable national process by an authorised professional.
Are grants and green mortgages guaranteed?
No. Enter only a benefit you have independently verified. Eligibility, caps, timing and lender conditions can change.
How is payback calculated?
It divides net works cost by estimated annual energy and financing savings. It excludes maintenance, tax, inflation and resale timing.