Energy outcomes come from building, systems, use and site. No single measure guarantees performance.
- Site climate and orientation
- Form efficiency and shading
- Envelope and thermal bridges
- Airtightness strategy and testing
- Moisture and ventilation strategy
- Glazing and solar control
- Heating and hot-water system
- Renewables assessed for the project
- Commissioning and monitoring
- Handover and maintenance
Evidence to request
- Project energy calculation
- Thermal bridge details
- Airtightness target and test method
- Summer overheating assessment
- Ventilation/moisture strategy
- Commissioning records
- Operating and maintenance documents
Next steps
KanadaHomes · Updated 18 September 2026. Working guide · not legal, cost or professional advice. Concepts, scope and suitability require project-specific verification.
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Professional background
Umweltbundesamt — Energiesparende Gebäude
The linked source explains general principles, not the suitability of a particular project. German sources do not replace local professional assessment.
Editorial responsibility: KanadaHomes · Revised 18 September 2026