Analizom odredbi Lastovskog statuta (1310. godina) u radu se podastiru pojedine značajke ugovornih obveza, posebice s obzirom na statuirane detalje (prepoznate/potvrđene recentnijim uredbama) koji postaju pokazateljima konkretnih onovremenih naglasaka gospodarskih i životnih prioriteta Lastova. Elementi raščlambe odnose se na restrikcije pravnog prometa (status ugovaratelja, ograničenja i zabrane trgovanja sa strancima, osobitosti trgovanja određenom robom, maksimiranje cijena…), kao i na pojedina pravna rješenja odstupanja od načela konsenzualnosti – javno oglašavanje prodaje, status notarske isprave, upis u komunalnu kancelarijsku knjigu, odnosno sklapanje ugovora „per aptago“. Rad notira statutarnu stilizaciju definiranja pretpostavki valjanosti ugovora koja uključuje i kaznenopravne elemente, budući da posljedicu ništetnosti može pratiti i sankcioniranje nepoštovanja statuiranog načina sklapanja određenih (obvezno)pravnih poslova, upućuje na pojedine odrednice u problematici zaštite prava ovlaštenika na otkup (odnosno prvokup) putem u interesu otočana osmišljenih rokova javne objave, dotiče pitanje javnog nadmetanja kao i režim nevaljanosti potajne i/ili prikrivene prodaje kao dodatnog ograničenja raspolaganja/otuđivanja nekretnina. nalyzing the provisions of the Statute of Lastovo (a. 1310), the Author presents some features of the contractual obligations particularly emphasizing the statutory details (identified / confirmed by more recent regulation) as indicators of concrete contemporary accents of the economic circumstances and life priorities of Lastovo. The elements of analysis relate to the restrictions of legal commerce (status of contractor, restraints considering the position of foreigners, particularities referring goods / trade items, price restrictions as well as certain legal solutions in deviations from the consensual aspect (elements of publicity, sale proclamation, status of notarial document, data in communal / chancellor records) conclusion of the contract “per aptago”. The Paper offers notes of prerequisites of contractual validity (frame involving stated criminal law elements since the consequence of nullity might also be associated with the pattern of sanctions for non-observance of mandatory requirements of legal transactions). Further, the Paper refers to certain determinants regarding protection of the rights of authorized parties (priorities in res acquiring - right of pre-emption/redemption) by standards of sale announcement (available intervals appropriate for the inhabitants / residents of the island), the issue of open bidding as well as the regime of the invalidity of hidden/concealed sales as an additional limitation implying disposition of immovables.