The petition, or the land use and development plan proposed by the planning commission in the case of a planning commission initiated reclassification, shall be referred to the county parks, recreation, and historical commission for recommendation. The recommendation shall include a determination as to whether or not the property meets the requirements of Section 17.20.040, whether or not reclassification to an HP district is an appropriate means of preserving the property, and whether or not the proposed uses and any proposed alterations to the property are inimical to its historical value. The parks, recreation, and historical commission may also make recommendations to the planning commission as to appropriate modifications in the proposal, including the boundaries of the district. The parks, recreation, and historical commission review shall be completed and transmitted to the planning commission within forty-five (45) days of receipt, or such longer time as may be agreed to by the planning commission, or the above determination shall be made by the planning commission. (Prior gen. code § 8-35.5)