Delaware County Deck Permit Guide (2026)

Short answer: yes — you need a permit to build a deck in Delaware County, Ohio. And there’s a step most homeowners miss: in addition to the county building permit, most townships require a zoning permit first. Here’s exactly how it works for Sunbury and the surrounding area, based on the Delaware County Department of Building Safety’s residential deck requirements.

Step 1: Township zoning permit (first)

Zoning is handled at the township level, not the county. In most townships you need a zoning permit before the county will issue a building permit. Zoning is what governs setbacks — how far your deck must sit from property lines — which vary by township, zoning district, and your subdivision’s plat. If you’re in an HOA community (common in the Galena new-builds like Vinmar Farms, Cheshire Woods, and Harbor Pointe), you may also need architectural review (ARC) approval on top of the zoning and building permits.

Note: Sunbury’s building-permit function rolled into the Delaware County Department of Building Safety on October 1, 2022. Zoning is still handled locally, though: inside the City of Sunbury it runs through the city (a zoning certificate), and in the unincorporated areas around town it runs through your township — for example Trenton Township or Berkshire Township. Either way the zoning step comes first, then the county building permit. See deck permits by township for how each area differs.

Step 2: Delaware County building permit

To apply for the building permit, the county requires:

• The township zoning permit (from Step 1, required in most townships)
• Two plot plans showing your house and the deck’s location on the lot
• Two building plans of the deck — layout, post locations, concrete footing sizes, and post-and-beam connection details

Permit fees

Fee	Amount
Building permit (base)	$75.00 + $2.00 per 100 sq ft of deck
Plan review (non-refundable)	$35.00 + $1.00 per 100 sq ft
Application (non-refundable)	$25.00
State assessment	1% of total

Fees are from the county’s published deck requirements; confirm current amounts with Delaware County Building Safety before applying.

Step 3: Inspections

• Post-hole inspection — required after the footing holes are dug and before any concrete is poured (holes must be clear of debris).
• Frame inspection — required if the bottom of the deck joists is less than 36 inches above grade, called before the decking goes on. If the joists are more than 36 inches above grade, the frame inspection can be combined with the final.
• Final inspection — all handrails, guardrails, and steps must be in place.

The frame inspection is the one worth caring about beyond the paperwork, because it is the last moment anyone can see the ledger connection and its flashing before the decking covers them for good. That joint attaches the deck to your house and is the leading cause of deck collapses — having it inspected is most of the argument for pulling a permit at all.

Footings and the Ohio frost line

Ohio code requires deck footings to extend below the local frost line and rest on undisturbed soil. In central Ohio that generally means footings in the range of about 32–36 inches deep — but the exact figure for your lot should be confirmed with Delaware County Building Safety. Proper frost-depth footings are what keep a deck from heaving and shifting over Ohio winters, and they’re exactly what the post-hole inspection checks.

Guardrails and stairs (Ohio code)

Ohio’s residential code typically requires a guardrail anywhere the deck is more than 30 inches above grade, a minimum 36-inch guard height, and baluster spacing that won’t allow a 4-inch sphere to pass. Confirm the exact specifications for your project with the county.

Who pulls the permit — you or the builder?

Either can, and the difference matters more than most homeowners expect. A homeowner may pull a permit on their own residence, but they then own the inspection scheduling, the corrections, and the final sign-off. We pull it as part of the job instead, which is why the zoning step, the county application, and the footing inspection all appear in our schedule rather than yours — see how we work and what we handle for the full scope, or start with decks and patios in Sunbury, Ohio.

One address quirk worth knowing: Delaware County’s southern edge overlaps mailing addresses people think of as Franklin County. If your home is in the Delaware County portion of 43082, this county process is the one that applies to you — our Westerville deck builder page covers that split, and the township-by-township guide covers who reviews zoning on your side of the line.

Design the permit out of the way, not into it

Most of the corrections we see on deck permits are design problems that surfaced at the counter rather than at the drawing board — a deck sized past the rear setback, a landing that clips a drainage easement, stairs that land where the plat says they cannot. Every one of those is cheaper to solve before submission. That is the practical argument for treating deck design as a step in its own right: a measured plan with the setbacks, easements, grades, and footing layout already on it is what turns the permit into paperwork instead of a negotiation.

It matters more the bigger the project gets. A single deck is one application; a full outdoor living space — deck stepping down to a patio, a roofed or screened structure, a fire feature, a gas or electrical run to a grill station — brings several reviewable elements that can be filed together on one design or discovered one at a time over three years of retrofits. Planning the whole footprint up front costs nothing extra and is the difference between one trip through this process and several.