When a person or community was granted a seigneury, certain obligations had to be met: rendering fealty and homage, ceding land to those who requested it, maintaining and having tenants maintain "hearth and home," reserving the oak wood for the building of royal ships and acknowledging the King of France had ownership of the subsoil. The awarding of a fief had to be confirmed by the King. Seigneurs could sell the land they had been granted. The price of a seigneury was generally proportional to its level of development: the more numerous the censitaires, the more was its selling price. The purchaser of a seigneury was required to pay the droit de quint, a tax collected by the state equal to one-fifth of the sale price. A seigneur could cede part of a seigneury as an arrière-fief [sub-fief]. The holder of this land had the same rights and obligations as the seigneur; however, he owed fealty and homage not to the King, but to the seigneur who ceded him his arrière-fief.