412.3. The by-law contemplated in section 412.2 may prescribe that, prior to the consideration of his application for a permit, the proprietor submit to the approval of the committee a preliminary programme of re-utilization of the vacated land. The by-law may also prescribe that, if the programme is approved, the proprietor furnish to the municipality, prior to the issuance of his permit, a monetary guarantee of execution of that programme in an amount not exceeding the value entered on the assessment roll of the immoveable to be demolished.
That programme may be approved only if it is in conformity with the by-laws of the municipality. To determine that conformity, the committee must consider the by-laws in force at the time the programme is submitted to it, except in the case where the issuance of a building permit for the proposed programme is suspended by reason of a notice of motion or a resolution of the executive committee, according to the procedure applicable to the municipality. When the issuance of permits is thus suspended, the committee shall not approve the programme before the expiration of the suspension or before the coming into force of the amending by-law contemplated in the notice of motion or in the resolution, if such coming into force occurs before the expiration of the suspension; the decision of the committee is then rendered having regard to the by-laws in force at the time of such decision.