Owner's obligation to make a street when disposing of land as building sites

If the owner of any land utilises, sells, leases or otherwise disposes of such land or any portion or portions of the same as sites for the construction of buildings, he shall, save in such cases as the site or sites may about on an existing public or private street, layout and make a street or streets or road or roads giving access to the site or sites and connecting with an existing public or private street.