Compliance

What is plan review in construction?

Plan review is the step where a building department or other authority checks a project's construction drawings and documents against the applicable codes before it issues a permit.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

Plan review is the paper inspection that happens before any field inspection. The architect or engineer submits drawings, specifications, and calculations. Reviewers at the authority having jurisdiction check them against the building code, fire code, energy code, accessibility rules, and local amendments. They either approve the set or send back comments that have to be answered. Only after approval does the permit get issued.

On anything bigger than a simple residential job, plan review is often the longest item between contract signing and mobilization.

How plan review works

  1. Intake: the department checks that the submittal is complete: drawings, forms, fees, and any required engineering.
  2. Discipline reviews: separate reviewers often look at building, structural, fire, mechanical, electrical, plumbing, and zoning. Health, utilities, and transportation may review too.
  3. Comments: reviewers issue a comment letter listing code issues or missing information.
  4. Resubmittal: the design team revises the drawings and responds to each comment, usually with a written response letter.
  5. Approval: once every discipline signs off, the approved plans are stamped and the permit is ready to issue.

Each comment cycle adds time. Review timelines and fees are set locally, and many departments publish target turnaround times on their websites. Some also offer paid expedited review or allow third-party plan review.

A worked example

Say a contractor signs a design-build contract for a 12,000 square foot office building and promises the owner a start in early spring. The architect submits permit drawings in December. In January the comment letter arrives with 31 comments: missing fire separation details, an exit sign layout, energy code calcs for the glazing, and a zoning question about parking.

The design team answers 30 comments in two weeks, but the parking question needs a variance. Instead of waiting, the contractor asks whether the department will issue a foundation-only permit while the zoning issue is resolved. The building starts on time and the rest of the permit follows.

Common mistakes

  • Incomplete first submittal. Missing calcs or forms can send the package back before review even starts.
  • Vague comment responses. "Revised" is not an answer. Point to the sheet and detail that changed.
  • Changing the design during review. New changes can trigger a fresh review on the parts already approved.
  • Not putting plan review in the schedule. It belongs in the baseline schedule with realistic durations.
  • Building from an unapproved set. The field must work from the approved, stamped drawings.

Contractors are not just bystanders here. On hard bid jobs, the bid set may not match what finally gets approved. Compare the approved, stamped drawings against the bid set as soon as the permit issues. Any difference caused by plan review comments is a potential change order, and it is far easier to price before the work starts.

Related terms

Plan review leads to the building permit, then field inspections and the certificate of occupancy. It is separate from the design team's own constructability review. Smart Business Automator can track submittal dates, comment letters, and resubmittals on each project. See RFI and submittal tracking automation.

Frequently asked questions

How long does plan review take?

It varies by jurisdiction, project size, and how complete the submittal is. Many building departments publish target review times. Each round of comments adds more time.

Who submits plans for review?

Usually the architect or engineer of record, or the contractor on its behalf. On design-build jobs, the design-builder handles it.

What is third-party plan review?

Some jurisdictions allow approved private firms to review plans for code compliance, which can be faster. The building department still issues the permit.

Can construction start before plan review is complete?

Only if the AHJ issues a partial permit, such as a foundation or site permit. Otherwise, work must wait for the approved permit.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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