Mich. Comp. Laws § 125.1260: Cost of project.

Sec. 10.

In determining the cost of the project, the governing body may include all cost and estimated cost of the issuance of the bonds, all engineering, inspection, fiscal and legal expenses and interest which it is estimated will accrue during the construction period and for 6 months thereafter on money borrowed or which it is estimated will be borrowed pursuant to this act.