The long-delayed Grundsteuerreform came into force on 1 January 2025 after the Federal Constitutional Court struck down the previous valuation basis. New assessed values are used by each Land — most use the federal "Bundesmodell" based on market rent proxies; Baden-Württemberg, Bavaria, Hamburg, Hessen, and Niedersachsen apply alternative models. Many homeowners and landlords saw notable changes in assessed tax.
All property owners in Germany; renters indirectly via Nebenkosten pass-through.
Primary: Bundesministerium der Finanzen ↗
Corroborating: Bundesregierung (Federal Government) ↗ · Bundesgesetzblatt (Federal Law Gazette) ↗
Verified 2026-04-21 · methodology · report a correction