What Is Plan Review in Construction?

Most jurisdictions split the review across specialists rather than running it through one examiner. A building examiner covers occupancy, egress, fire separation and accessibility; a structural examiner reads the calculations against the drawings; fire, mechanical, plumbing, electrical and energy reviews may sit with different desks or different departments entirely. Public health, planning and utilities can each hold their own approval.

Many jurisdictions also accept third-party review, where a licensed consultant performs the examination and the department accepts the result. That usually buys a shorter queue, not a softer review. Either way the applicant is coordinating several reviewers with different comment styles, and a set can clear four desks while a fifth holds it.

A first submittal rarely comes back clean. The examiner issues numbered comments, each citing a code section, and the design team responds to every one in writing, usually in a comment response matrix that pairs the comment, the response and the sheet where the change appears. Resubmittal returns the revised set with that matrix attached.

Backcheck is the examiner verifying that each response does what it claims. A response that says "see revised sheet A3.02" and points at a sheet where nothing changed restarts the cycle and costs another queue slot. On a large project, three cycles is normal and each one can take weeks, which is why permit timelines are usually measured in review rounds rather than in days.

The recurring items are not exotic. Egress width and travel distance, fire-resistance ratings and the assemblies cited to achieve them, accessible route and clearance dimensions, occupancy classification and allowable area, energy compliance documentation, and structural details that the calculations do not match. Missing information generates as many comments as wrong information: an unreferenced detail or a schedule that does not agree with the plan both come back.

The other large category is internal inconsistency. Architectural sheets that disagree with structural, a specification section that names a product the drawings do not, a life-safety plan that shows a door the floor plan does not. Examiners find these because reading the set as a whole is exactly what they do.

Permit approval is a hard gate. No amount of contractor readiness moves it, and the project cannot buy its way past a queue. Review times vary widely by jurisdiction and project type, from a couple of weeks for a small tenant improvement to several months for a complex building, and each resubmittal usually re-enters the queue rather than jumping it.

That makes the quality of the first submittal worth real money. A set that generates 40 comments instead of 120 does not just save response hours, it can save an entire review round. Teams that run an internal check against the code before submitting are buying schedule, not tidiness.

Plan review is the jurisdiction checking a permit set against adopted code. Drawing review is the design and construction team checking its own documents for coordination, completeness and constructability, which happens before submittal and continues through construction administration. Inspection happens on site and checks the work built against the approved set.

The terms blur in software marketing, where "AI plan review" is often used for any automated check of a drawing set. The distinction that matters to a practitioner is who holds the authority: only the jurisdiction can approve a permit set, and no internal or automated check changes that.