For those public improvements for which security has been allowed, construction of all remaining improvements shall be completed within a negotiated time frame not to exceed 12 months after the recording of the final plat. Occupancy of homes, businesses, dwellings, etc., shall not be permitted until all public improvements have been installed, tested, have received final acceptance by the city, a one-year warranty bond is completed, conditions of approval are completed, and final inspection of the homes, businesses, dwellings, private improvements, etc., have occurred.