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Do You Need a Permit to Replace Windows in Wisconsin?
Sometimes yes - Sometimes no.

Permits Depend Where You Live
Permit requirements for window replacement depend on the municipality. Some cities want permits for almost everything. Others do not require one for standard replacement work. In some places, the number of windows being replaced or the cost of the project can also affect whether a permit is needed.
That is why Duncan’s does not treat permits like a blanket yes-or-no answer for every homeowner. We handle it based on where you live and what work is being done. In Oshkosh, permits are generally required. In some nearby areas, like Appleton and Omro, they may not be. Other places have their own rules. The point is, homeowners should not have to memorize municipal permit policies before getting new windows.

The Duncan Approach To Permits
If a permit is required, Duncan’s handles it. The homeowner does not have to go down to city hall, fill out forms, or figure out what the municipality needs. We deal directly with the city or township and take care of permitting as part of the process. If a local rule changes or a township has a requirement that was not obvious up front, Duncan’s takes care of it and keeps the customer out of the middle of the mess.
The best approach is simple... if you are not sure whether your project needs a permit, ask. We already know the common areas we work in, and if something unusual comes up, we will figure it out. That is part of the job.
