Williamstown Township

Ingham County, Michigan

Last verified September 17, 2026

Williamstown Township is a jurisdiction in Ingham County, Michigan, with an online portal for searching and pulling active or historical building permits. 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: 517.655.3193
Email: mark.stevenson@williamstownmi.gov
Department Site: Building Department (opens in a new tab)

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

Permit Search

BS&A Online (opens in a new tab)

Certificate Holder Mailing Address

4990 N. Zimmer Road
Williamston, MI 48895

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

Additional Notes

Building contact is Mark Stevenson. Note the domain/name collision risk flagged in the task: this is Williamstown Township (williamstownmi.gov), NOT the differently-named City of Williamston (williamston-mi.us) -- both in Ingham County -- verified as separate via each entity's own official site. BS&A Online is used for property/permit records search per the official site. Electrical, mechanical, and plumbing permits are handled by the State of Michigan (LARA) rather than the township, per the township's own page. Office hours: Tue 10am-4pm, Wed 10am-6pm, Thu 10am-4pm; closed Mon/Fri.

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 — Williamstown Township'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.

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