11.
—(1) Where a housing developer has granted to a person an option to purchase a unit in a housing project, he shall not grant to any other person an option to purchase the same unit until after the first-mentioned option has lapsed.
(2) An option granted by a housing developer to any person to purchase a unit in a housing project shall remain in force for 3 weeks from the date of delivery to the option holder’s solicitors of the title deeds or copies thereof and the draft agreement for the sale and purchase of the unit.