Some residential permits, such as roofing, siding, window replacement, plumbing, mechanical, and electrical permits can be issued immediately. Residential permits which require plan review should expect at least a 7 to 10 business day wait before the permit is ready to be issued. Some commercial permits may take up to 4 to 6 weeks for plan review. If plans are not complete, the review time will be longer. Therefore, it is important for the applicant to review the plans before submitting to make sure they show specifically what is to be built and how it will be built.