Except as provided in § 153.28, no plat of any subdivision in the city shall be approved by the Planning Commission pursuant to R.C. § 711.09 until there have been submitted to the Commission plans and specifications for the improvements, hereinafter set forth in §§ 153.21 through 153.27, to be made to the platted land, and until these improvements have been made or a performance agreement and bond given to secure their construction within such reasonable time as shall be determined by the Commission.
(`63 Code, § 1113.01)