City of Croswell

Sanilac County, Michigan

Last verified September 17, 2026

City of Croswell is a jurisdiction in Sanilac County, Michigan, which does not currently list an online permit database — contact the department directly by phone or email. Use the contact information below to reach the local building department, or the mailing address if the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Contact

Phone: (810) 648-4664
Department Site: Sanilac County Building Department (Building/Electrical/Plumbing/Mechanical permits for City of Croswell) (opens in a new tab)

Source: sanilaccounty.gov (opens in a new tab)

Permit Search

No online permit database on file — contact the department directly by phone or email.

Certificate Holder Mailing Address

Sanilac County Department of Construction
60 W. Sanilac Avenue, Room 210
Sandusky, MI 48471

Use this address when the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Additional Notes

Confirmed directly in the City of Croswell's own official 'General Information' packet (published via the city's website/CMS): 'Building Permits: Permits and inspections are completed by the Sanilac County Building Department (810) 648-4664,' and the same applies to Electrical, Plumbing, and Mechanical permits. Land Use, Fence, and Sign permits ($25 each) are issued directly at Croswell City Hall by the Zoning Administrator (810-679-2299). City Hall: 100 N. Howard Ave., Croswell, MI 48422, (810) 679-2299, fax (810) 821-0777.

What You Need Before Applying for a Permit

Most building departments ask for the same core package before they'll issue a permit: a completed application naming the property owner and contractor, the contractor's state license number and proof of insurance (general liability, and workers' comp if employees are on the job), a notice of commencement or equivalent recorded filing for larger jobs where the state requires one, and scaled plans or a site plan for anything beyond minor repairs. Roofing, fence, pool, and solar permits typically have their own simplified checklists — City of Croswell's department (above) can confirm exactly what applies to your project.

Why this matters for insurance: permit history is one of the first things an underwriter or adjuster checks. Unpermitted work — a finished basement, an added bedroom, a rebuilt roof — can complicate a claim or even void coverage for that portion of the loss, and it routinely surfaces during a home inspection. Pulling the right permit up front, and keeping the closed-permit record on file, protects both the property's value and its insurability at resale.

More in Sanilac County

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