Without prejudice to the generality of the foregoing, the Minister may by such rules provide for —
(a) the regulation of the advertisements of a licensed housing developer;
(b) the regulation of the use of names of housing estates developed by a licensed housing developer;
(c) the payments by the purchaser before and during the construction of the house, flat or other accommodation, including —
(i) the amount of the maximum initial deposit that may be accepted from a purchaser before an agreement to purchase land or for the construction of a house, flat or other accommodation is signed; on signing such agreement and the conditions that shall be satisfied before a licensed housing developer may sign such an agreement with a purchaser;
(ii) the stage of construction at which each instalment shall become payable and the percentage in relation to the total cost of the house that shall be payable in respect of such instalment;
(iii) the requirements to be fulfilled before a licensed housing developer can require a purchaser to pay an instalment which is due; and
(iv) the amount of the purchase price, expressed as a percentage of the total price which the purchaser shall not be required to pay before the certificate of fitness of the Chief Building Surveyor is issued;
(d) the form or forms of the contract that shall be used by a licensed housing developer, his agent or nominee and a purchaser as a condition of the grant of a licence under this Ordinance;
(e) the conditions, which if used in any contract between a licensed housing developer, his agent or nominee and a purchaser, shall be void;
(f) the fees to be paid on the issue of, and annually for, a licence or a provisional licence and the charges for the purposes of this Ordinance.