Unless otherwise provided by a development agreement, the general plan, zoning, subdivision, and other ordinances, rules, regulations and official policies governing permitted uses of land, density, and design, improvement and construction standards, and specifications applicable to property subject to a development agreement shall be those applicable to such development on the date of execution of the development agreement by the council; provided, however, that a development agreement shall not:
1. Be construed to prevent the application of later adopted or amended ordinances, rules, regulations and policies in subsequent applications applicable to the property which do not conflict with such existing ordinances, rules, regulations and policies; or
2. Prevent the approval, approval subject to conditions, or denial of subsequent development applications pursuant to such existing or later adopted or amended ordinances, rules, regulations and policies.