A major redevelopment of the historic Tatoi Estate—the former summer residence of Greece’s royal family—has officially been set in motion. The Hellenic Corporation of Assets and Participations launched an international tender, on Dec. 10, for a long-term concession contract of at least 65 years, with bids due by Jan. 26, 2026.

Under a new legislative provision submitted to Parliament, the entire 40,000-acre property now falls under the authority of the Ministry of Culture, which also assumes use of an additional 17,732 acres previously managed by the Ministries of Environment and Agriculture.

What the Concession Entails
The selected concessionaire will be responsible for the restoration, adaptive reuse, conservation, and gentle development of buildings and surrounding areas within the estate, all of which are designated contemporary monuments. The scope includes conducting all studies, securing permits, and carrying out the full range of works required, with strict respect for the site’s natural and cultural landscape.

Of the 40 buildings on the property—including the former royal residence—24 located within the Historic Site will be available for redevelopment. Their sizes range from 30 to 930 square meters.

Proposed uses include boutique hotels, guesthouses, restaurants, a greenhouse, and a winery. Every structure requires structural reinforcement and restoration before receiving any new function, and concessionaires will also have the right to redesign the immediate outdoor spaces.

The estate currently features roughly 15,000 square meters of built surface, 6,400 of which correspond to the buildings offered in the concession. Any new use will require approval from the Ministry of Culture following necessary repairs and modifications.

Restorations must preserve the original architectural form, while limited additions—up to 10% of existing building volume—may be made to accommodate mechanical installations and accessibility needs. Interior mezzanines will be allowed without altering overall height or mass.

Restoration works in Tatoi’s Historic Core are already well advanced and expected to conclude in late 2026. Plans include a new museum, a restored summer palace, exhibition spaces for estate artifacts and vehicles, an agricultural heritage museum, multipurpose halls, and educational facilities.