Can I Get a PE Stamp for My Existing Home Plans in New Hampshire?

New Hampshire requires the sealing engineer to be in responsible charge of the engineering — the engineer must have exercised engineering judgment over the design. For existing plans, this means independent verification: the engineer recalculates structural elements, checks code compliance under the applicable New Hampshire-adopted codes, and revises the drawings as needed before sealing. The seal must show the engineer's name, New Hampshire PE number, and date. New Hampshire engineers cannot seal work outside their area of competence. Manchester, Nashua, Concord, and the other municipalities review the sealed package against their local amendments.

The review starts with the full drawing set: architectural, structural, foundation, and any prior calculations. The engineer checks the design against the design loads — snow loads are the signature issue in New Hampshire — verifies frost protection for the deep frost depth, and recalculates beams, columns, foundations, and the lateral system. Ledge rock and glacial till affect foundation design. Deficiencies get redlined; the drawings are revised until the engineer can take professional responsibility. Bring the geotechnical report, the design criteria, and any prior plan-check comments. Southern New England plans often underestimate New Hampshire snow loads.

Use this checklist before engaging an engineer for existing plans: • Engineer of record holds an active New Hampshire PE license, verifiable on the state roster • Plans are complete: architectural, structural, foundation, and prior calculations • Snow loads verified against New Hampshire's ground snow values • Frost-depth compliance verified for footings, plumbing, and equipment • Prior plan-check comments included so corrections aren't repeated • Engineer confirms they'll respond to plan-check corrections on sealed sheets • Scope agreement covers review, revision, sealing, and corrections • Seal shows name, New Hampshire PE number, and date on every sealed sheet