Do I Need a Permit for a Deck Replacement?
Usually yes — most jurisdictions require permits for deck replacement even when replacing an existing deck, because the replacement must meet current code (which the old deck often predates). Like-for-like board replacement (decking only, same structure) is typically exempt; replacing the framing, changing the size or height, or altering the ledger connection triggers the permit. The ledger connection is the number-one deck failure point and the inspector's focus.
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What triggers the permit
Structural replacement (new joists, beams, posts, or footings), size or height changes, new stairs or railings, and any change to the house attachment. The current code requirements the old deck likely lacks: proper ledger flashing and through-bolting (not nails), joist hangers at every connection, 4-inch maximum baluster spacing, graspable handrails, and footings below frost depth. The permit brings the deck up to the standard that prevents collapses.
The ledger connection
Deck collapses are overwhelmingly ledger failures — the deck pulling away from the house. Current code requires the ledger bolted (not nailed) to the house's band joist or masonry with specified bolt patterns, plus flashing that keeps water out of the house's wall cavity. If the house has brick veneer or stucco over wood, the ledger connection needs engineering — you cannot bolt a deck to veneer. Freestanding decks (not attached to the house) avoid the ledger entirely and simplify the permit.
Inspection sequence
Footing inspection (holes dug, before concrete), framing inspection (ledger, joists, beams, hardware — before decking), and final (railings, stairs, handrails). Keep the approved plans on site; the inspector verifies lumber species and grades, hardware models, and fastener schedules against the plans. Budget $3,000-$8,000 for the permit, plans, and inspections on a typical replacement.
The bottom line
Permit deck replacements that touch the structure — the ledger connection, flashing, and hardware must meet current code. Inspect footings, framing, and final; never bolt a ledger to brick veneer.
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