Does an Architect Still Need a PE Seal After a Peer Review?

The peer reviewer's deliverable is findings: a report identifying concerns, questionable assumptions, calculation errors, and detailing weaknesses, delivered to the party that hired them — usually the owner or the architect. The reviewer does not redesign, does not seal, and does not take responsibility for the design; their responsibility is the thoroughness and honesty of the review. A good peer review is specific enough to act on: not "check the lateral system" but "the diaphragm chord forces at grid C appear unconservative for the stated seismic parameters — recalculation recommended." The sealing PE's deliverable is the certified permit set: drawings and calculations reviewed under responsible charge, revised as the review required, and sealed for the building department. The seal is a professional statement to the AHJ and the public, carrying liability the peer review does not. This is why the two cannot substitute: the building department needs someone professionally responsible for the engineering, and only the seal creates that responsibility. Architects who understand this distinction scope and budget both correctly instead of hoping one covers the other.

The peer review belongs in design development. At DD the structural system is selected, preliminary sizing exists, and the MEP concept is defined — enough for a reviewer to evaluate the important decisions, early enough that findings can still change the design without rework. I scope peer reviews to the decisions that matter: system selection, load paths, major member sizing, foundation concept, and the assumptions behind them. Reviewing DD-level documents keeps the effort focused; asking a peer reviewer to bless 100% CDs usually means reviewing details nobody will change. The EOR's review-and-seal then runs through construction documents into permit, incorporating the peer review findings as input. I ask architects to share the peer review report with the EOR — some architects hesitate, worried it undermines the EOR, but in practice it focuses the EOR's review on the areas an independent engineer already flagged as worth a second look. The permit set that emerges has been through two independent engineering minds plus the AHJ's plan check. That is what a defensible seal looks like on complex work.

Use both reviews for what each does best and keep their roles clean. • Hire the peer reviewer by design development for complex, high-risk, or owner-mandated scopes — scope the review to system-level decisions • Keep the peer reviewer independent from the sealing EOR; do not combine the roles when independence is the point • Share the peer review report with the EOR so the sealing review incorporates the independent findings • Resolve engineer-to-engineer disagreements directly and on paper before permit — never carry open technical disputes into the field • Remember the permit set always needs the EOR's seal; no peer review report substitutes for it at the building department