The binding legal principles established are: (1) Under section 41 of the Regional, Town and Country Planning Act, 'disposal' of a subdivision occurs when the landowner has sold the land and been paid the purchase price, which triggers the obligation to pay endowment. (2) Where property is sold on installment terms, endowment is payable as a percentage of each installment actually received by the landowner, not on the full anticipated purchase price. (3) Section 10(1) of the Urban Councils Act operates to transfer all rights, property, moneys, and obligations vested in a former local authority to a new local authority when land is incorporated into the latter's jurisdiction. This includes the right to receive subdivision endowment payments. (4) Subdivision permit conditions must be read and interpreted in conjunction with the provisions of the governing statute, not in isolation.