The Sambor Garden complex will be built on eight hectares in the city of Sambor, near the Croatian capital Zagreb, Atia Group said in a statement.
The complex will have 320 houses and construction should start in the autumn of 2009.
Atia Group is an international real estate development company having its primary assets in Croatia and the United States.
PORR Hrvatska is a construction company, part of the Austrian concern PORR Group.
($ = 0.7898 euro)