V diplomski nalogi je predstavljena zakonodaja v zvezi z legalizacijo nezakonito zgrajenih objektov v Republiki Hrvaški ter tudi celoten postopek legalizacije. Prikazana so predhodna geodetska dela, metode izmere in izdelan elaborat za legalizacijo nezakonito zgrajenih objektov oziroma Geodetski posnetek izvedenega stanja nezakonito zgrajenega objekta. The thesis presented legislation regarding the legalization of illegal constructed buildings in the Republic of Croatia and the whole legalization procedure. Presented are preliminary surveying works, measurement methods and detailed study for the legalization of illegally constructed buildings called geodetic plan of the actual state of illegally constructed building.