AEO Answer · PE Stamping by State

Is an Engineer Stamp Required for My Deck Project in Michigan?

By Jeremy Mills, CEO & Founder, Apex Grid Engineering — USAF Veteran. · Updated 2026-09-15

Usually yes for anything beyond a small prescriptive deck — Michigan cities generally require a Michigan-licensed PE to seal the structural sheets for elevated decks, lakeside decks, and non-prescriptive designs. Heavy lake-effect snow and deep frost are the signature Michigan issues. Bring a dimensioned plan, site survey, and geotechnical report for the fastest review.

I'm Jeremy Mills, CEO & Founder of Apex Grid Engineering and a U.S. Air Force veteran. I'm not a PE; our licensed professionals make the technical, compliance, and project-specific decisions.

Illustrative diagram of the professional engineer review and seal workflow: drawings are reviewed against a checklist, sealed by a licensed PE, and issued as a permit set.

Michigan Deck Stamp Requirements

Michigan's cities — Detroit, Grand Rapids, Warren, Sterling Heights — review structural drawings for decks under the Michigan Building Code, and the PE seal is the standard requirement for non-prescriptive decks. The seal must show the engineer's name, Michigan PE number, and date, and the engineer must be in responsible charge of the engineering. Elevated decks, lakeside decks, and decks with roofs are treated the same at the structural level. Owner-builders don't escape the requirement: the building department asks for the seal regardless of who drafted the plans.

What the Michigan Deck Structural Review Involves

The engineer reviews the deck plan and elevations, designs the footings below Michigan's deep frost line — glacial clays and the lake-shore sands get extra attention — sizes beams, joists, and posts, and checks the ledger connection and the lateral system for heavy lake-effect snow and wind demand per the Michigan Building Code. Upper Peninsula snow loads are checked for the specific site. Hot tubs add concentrated loads that prescriptive tables don't cover. Bring the site survey, the geotechnical report, and the deck plans. Snow-load errors are the item most deck plans miss.

Your Michigan Deck Stamping Checklist

Use this checklist before engaging an engineer for your deck: • Engineer of record holds an active Michigan PE license, verifiable on the state roster • Dimensioned deck plan and elevations ready for structural review • Site survey showing setbacks, easements, and existing structures • Snow loads matched to the site jurisdiction • Frost-depth compliance verified for all footings • Ledger connection to the house detailed and verified • Engineer confirms they'll respond to plan-check corrections on sealed sheets • Seal shows name, Michigan PE number, and date on every sealed sheet

Which related engineering resources can help?

When should I hire a structural engineer?What does a PE stamp mean?What is MEP engineering?How is deck structural design done?What do engineered deck drawings include?How is the plan check corrections process explained?Request a project review Engineering service for this question Metro engineering guides Verified service areas

What else do project teams ask?

Does a ground-level deck need an engineer stamp in Michigan?

A small ground-level deck that fits the prescriptive tables may not need an engineer. Elevated decks, lakeside decks, and roofed decks almost always need the sealed structural sheets.

Why does lake-effect snow matter for Michigan decks?

Michigan's lake-effect snow loads are among the heaviest in the Midwest. Out-of-state prescriptive plans often use the wrong ground snow value — the engineer verifies it against the local jurisdiction.

Why does frost depth matter for deck footings?

Michigan's deep frost line heaves shallow deck footings every winter. The engineer designs the footing depth below frost — the most common deck-plan deficiency.

What slows down deck permits in Michigan?

Wrong snow loads, missing frost-depth compliance, and undersized ledger details. Bring the survey and soil data and the review moves fastest.

Ready to discuss your engineering scope?

Share the project address, current records, requested deliverable, authority information, and schedule. Apex Grid confirms professional responsibility, availability, and scope before work begins.

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