What is a plan review and when is it required?

Updated October 2026 · How we answer

What Happens During a Plan Review

A plan reviewer looks at site plans, floor plans, structural details, and sometimes energy calculations. The goal is to confirm that the proposed work meets zoning rules and the adopted building code before anyone starts construction. Reviewers often send comments that you must answer or revise.

The review can take days or several weeks, depending on the project and the department's workload. Complete, clear drawings usually move faster, and a missing detail often causes a second round of comments.

• Site plan showing setbacks and lot lines
• Floor plans with room sizes and uses
• Structural and framing details
• Energy or ventilation calculations when required

When You Can Expect One

Plan reviews are most common for additions, garages, decks with structural loads, and major renovations that change the layout. Small jobs like a simple repair may skip this step and go straight to a permit.

Ask at the start whether your project needs a plan review. Knowing the timeline early helps you plan your schedule and budget, especially if you need the work finished by a set date.

If the reviewer asks for changes, respond with a revised set of drawings rather than verbal explanations alone. A clear cover letter that lists each change helps staff recheck the work faster. Keep copies of every submission for your own records.

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