15.
—(1) A housing developer shall not, without the prior consent in writing of the Controller, seek from a purchaser of a unit in a housing project —
(a)
any waiver of the purchaser’s rights under an agreement for the sale and purchase of the unit; or
(b)
any release from the performance of the housing developer’s duties and obligations under the agreement for the sale and purchase of the unit.
(2) Any undertaking given by a purchaser of a unit in a housing project to a housing developer which seeks to waive the purchaser’s rights or claims against the housing developer for a breach of, or to release a housing developer from the performance of, the housing developer’s duties and obligations under an agreement for the sale and purchase of the unit shall be unenforceable unless the prior consent in writing of the Controller has been obtained.