Before or as a condition of receiving final approval from the town and County of any final plat or certified survey map for which public improvements are required by this Ordinance; or for which public improvements, dedications, or fees are being deferred under this Ordinance; or for which phasing approval is being granted under Section 14-09.2 of this Ordinance, the subdivider shall sign and file with the town board a development agreement. The development agreement shall be approved as to form by the town attorney at the subdivider’s expense and shall be subject to approval by the town board prior to approval of the final plat or certified survey map. [Code § 14.02-8.]