27A V.S.A. § 4-120: Substantial completion of units

If delivery of a public offering statement is required for the sale of a unit, a contract of sale may be executed, but interest in that unit shall be conveyed only after the declaration is recorded and the unit is substantially completed, as evidenced by a recorded certificate of substantial completion executed by an independent architect, professional surveyor, or engineer, or by issuance of a certificate of occupancy.