Decks
Utah has a specific residential-code deck exemption. Height alone is not enough: guardrail requirements, required exits and other work matter too.
A preliminary guide, not official approval. The department makes the final determination. Sources reviewed November 6, 2026.
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What matters for this project.
Utah Code 15A-3-202(5)(b) sets conditions for a residential-code deck exemption: a maximum height of 30 inches anywhere above grade, no required guardrails and no service to a required exit door.
Confirm residential-code applicability and the complete project with the local department. A roofed porch, patio cover or enclosed space needs a separate scope review. Ask about surface maintenance or any part of the work you are unsure of.