(1) Any inspection required by this chapter shall include, at a minimum, the following:

(a) Water penetration resistance testing of a representative sample of windows and window installations. Such tests shall be conducted according to industry standards. Where appropriate, tests shall be conducted with an induced air pressure difference across the window and window installation. Additional testing is not required if the same assembly has previously been tested in situ within the previous two years in the project under construction by the builder, by another member of the construction team such as an architect or engineer, or by an independent testing laboratory; and

(b) An independent periodic review of the building enclosure during the course of construction or rehabilitative construction to ascertain whether the multiunit residential building has been constructed, or the rehabilitative construction has been performed, in substantial compliance with the building enclosure design documents.

(2) Subsection (1)(a) of this section shall not apply to rehabilitative construction if the windows and adjacent cladding are not altered in the rehabilitative construction.

(3) "Project" means one or more parcels of land in a single ownership, which are under development pursuant to a single land use approval or building permit, where window installation is performed by the owner with its own forces, or by the same general contractor, or, if the owner is contracting directly with trade contractors, is performed by the same trade contractor.