Starting in 2026, Greece is set to introduce a new digital property registry that fundamentally changes how real estate is recorded and monitored. The Property Ownership and Management Registry, known as “Midas” and developed by the Independent Authority for Public Revenue (AADE), goes far beyond a traditional database. Officials describe it as a comprehensive digital footprint of property ownership across the country.
The initiative is designed to support fairer taxation, identify undeclared real estate assets, and provide reliable data for housing policy planning. For the first time, public authorities aim to establish a single, complete, and verified overview of real estate ownership nationwide.
Greece’s property registry rollout timeline and delays
Although the platform was initially scheduled to launch earlier, technical challenges delayed its rollout. The main difficulty stemmed from the complex integration between tax authority systems and the national cadastre.
These issues are now nearing resolution, with full operational deployment expected in 2026, following the completion of final technical adjustments. Once live, Greece’s digital property registry will serve as a central reference point for property-related data across multiple public administrations.
How will the new system work?
From January 2026 onward, tax authorities will begin extensive cross-checks between property declarations and cadastral records, using the unique cadastral identification code as the primary reference. After data processing is completed, property owners will receive notifications prompting them to review, confirm, or update their recorded information.
Each property will have a detailed digital profile including its type, surface area, location, floor level, electricity connection status, construction stage, usage, and ownership identifiers. The registry will also incorporate data from electricity grid operators, insurance contracts, pending legal cases, and building permits issued through professional bodies.
Greece’s property registry compliance checks and penalties
Properties that appear in cadastral records but have never been declared for tax purposes will trigger targeted audits. Assets that have remained outside the tax system for years may face substantial penalties, according to tax officials. Minor discrepancies, however, are not expected to result in automatic fines.
Authorities emphasize that the primary goal of the Greece property registry is to clarify ownership and usage status, rather than impose punitive measures indiscriminately.
Mandatory declarations and rental transparency
Property owners will be required to declare the actual use of every asset, whether it serves as a primary residence, office, vacant unit, or rental property. Short-term rental operators will submit all required data through the registry, with information automatically transferred to annual tax filings.
Tenants will also gain access to the system. They will be able to view registered rental agreements and verify declared rent amounts. If discrepancies are detected, tenants will be required to report accurate figures, enabling immediate cross-checks between landlord and tenant declarations.
Greece’s property registry linked to real estate transactions
The registry will update automatically whenever a lease is registered, accepted by a tenant, or terminated. This continuous flow of information will give tax authorities near real-time insight into rental activity and property usage.
By consolidating fragmented datasets into a single digital infrastructure, Greece’s property registry aims to reduce tax evasion, improve transparency in the rental market, and support more effective housing and fiscal policymaking in the years ahead.
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