§ 38. An authority shall file with the commissioner a copy of each proposed project embodying the plans, layout, estimated costs and proposed method of financing. Any change made in the project shall be filed with the commissioner by the authority. With reasonable promptness after each project shall have been completed, and from time to time prior to completion upon request of the commissioner, an authority shall file with the commissioner a detailed statement of the cost thereof.

Upon receipt of a copy of a proposed state project, or of any proposed change therein, the commissioner may transmit his criticisms and suggestions with reasonable promptness to the authority or the municipality. No change in a state project may be made by an authority or a municipality without the approval of the commissioner.