Groß-Bieberau – September 11, 2026 -- Homeowners selling property in Germany now face buyers who scrutinize energy efficiency and renovation costs as closely as location and square footage. SENGER Immobilien & Energieberatung, based in Groß-Bieberau, combines over 30 years of real estate brokerage experience with certified energy consulting across the Darmstadt-Dieburg district, Rhein-Main region, Odenwald and Bergstrasse areas.