Building Department

For building questions please contact the Williamstown Township Office at: 517.655.3193

Current Permit Pricing Schedule

A building permit is valid for 180 days from the issue date. The permit can be extended for an additional 180 days upon request provided an inspection has been done by the Township Building Inspector within the original 180 days.
If an inspection has not been done by the Township Building Inspector within the original 180 days, an extension is not guaranteed, but will be considered upon request & discussion with the Building Inspector.
If the permit is not extended, it is considered expired and work cannot continue until a new permit is applied for and issued. A permit fee will apply and will be adjusted to reflect the value of the work remaining to complete the original project.
An inspection must be done within the 180 day extension or the permit will be cancelled.


Note:  Many homeowner insurance companies require proper inspections (building, electrical, etc) to insure a home and to process insurance claims. It is the homeowner's benefit to have all inspections completed.

Electrical, Mechanical and Plumbing Permits are for the State of Michigan are available online:

Applying for a permit online gives the applicant a permit number as soon as they complete the application, and provides the applicant with their inspector's phone number. Electrical, Mechanical and Plumbing permits are also available at:

State of Michigan Department of Labor & Economic Growth
Bureau of Construction Codes & Fire Safety
P.O. Box 30254
Lansing, MI 48909
FAX 517.373.8547
Electrical Division: 517.241.9320
Mechanical Division: 517.241.9325
Plumbing Division: 517.241.9330