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.

What each inspection actually checks

Knowing the schedule is one thing; knowing what the inspector is looking at is what stops a correction notice. Each of the three visits exists because it is the last moment something is still visible.

Inspection	What is being looked at	Why then
Post-hole	Hole depth below the frost line, diameter and location against the approved plan, bearing on undisturbed soil, bottoms clear of loose spoil and standing water	Concrete makes all of it permanently invisible
Frame	The ledger attachment and its flashing, post-to-footing and beam-to-post connections, joist hangers and fasteners, spans and spacing against the plan	Decking covers the entire structure the following day
Final	Guards and their height, baluster spacing, stair rise and run consistency, handrails and stair guards	These are the parts a person leans on and walks down

The frame inspection is the one that earns the permit. It is the only time a third party sees the ledger connection and its flashing — the joint that holds the deck to the house, and the failure point behind most deck collapses. A deck built without a permit is not primarily a paperwork problem; it is a deck where nobody but the builder ever looked at that joint.

A failed inspection is not a restart. It produces a correction notice, the item is fixed, and the inspection is re-called — what it costs is calendar, because the project rejoins the scheduling queue. Most of the corrections we see trace back to the drawing rather than the field: footings that do not sit where the plot plan says, a footprint sized past the setback, stairs landing inside an easement. Confirm the exact specifications for your project with the county.

Does a deck repair or replacement need a permit?

This is the question we get most often after "do I need one at all," and the honest answer is that it turns on structure versus surface, not on the word "repair." Swapping worn boards or railings on a frame and footings that are staying exactly as they are is a different proposition from work that touches the structure. Anything in the second column below should be assumed to need a permit until the county says otherwise:

• Surface-only work — replacing decking boards, railing infill, or stair treads on an unchanged, sound frame.
• Structural work — new or additional footings, a replaced or re-attached ledger, changed joist spans or beam sizes, a larger footprint, new stairs in a new location, or adding a roof, pergola or screened enclosure over the deck.

The determination belongs to the Delaware County Department of Building Safety, not to a contractor and not to this page. On a repair, describe the actual scope to them before work starts rather than assume either answer — the cost of asking is a phone call, and the cost of guessing wrong is exposing finished work for an inspection that should have happened before it was covered. If you are not yet sure which side your deck falls on, our deck repair vs. replace guide walks the structure-first assessment, and deck repair, staining and sealing covers the work when the frame is sound. A replacement deck, by contrast, goes through this whole process exactly as a new build does — see the timeline for a deck build in Ohio for how the approvals and inspections stack up against the calendar.

Which Ohio building code applies to a deck?

Search for “Ohio deck building codes” and you will find a lot of material written for other states. The code that actually governs a deck here is the Residential Code of Ohio — the state’s code for one-, two- and three-family dwellings, adopted by the Ohio Board of Building Standards and based on the International Residential Code. There is no separate Delaware County deck code. The county building department enforces the state residential code through its plan review and inspections, and your township or city zoning sits on top of it and decides where the deck may go.

In practice, four parts of the code decide most deck plans:

• Footings — below the frost line and on undisturbed soil (covered in the next section).
• The ledger connection — how the deck attaches to the house, how it is fastened, and how it is flashed so water stays out of the rim joist. Our ledger board and flashing guide covers why this is the connection inspectors look at hardest.
• Spans — joist and beam sizes and spacing for the decking you choose. Composite decking often needs tighter joist spacing than wood, which is worth settling before the drawing is submitted.
• Guards and stairs — heights, opening sizes, and stair geometry (covered below).

Code editions and local amendments change over time, so treat this as orientation rather than a checklist: confirm the edition in force and anything specific to your lot with Delaware County Building Safety before you draw.

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.

What about a patio instead of a deck?

Everything above is about decks — elevated structures on footings. An at-grade paver patio usually goes a different way: it is generally not treated as a structure, so there is typically no county building permit and no footing inspection, and the review is mostly zoning — setbacks, easements, and how much of the lot can be hard surface. HOA architectural review still applies in most newer subdivisions. Add a roof, a pergola, or a taller retaining wall and a permit can come back into play. Where a patio sits in the yard matters as much as the paperwork: on an established lot with mature trees and a settled grade, the constraints are access and base prep rather than approvals — our page on paver patio installation in Powell, Ohio walks through that case, and the deck vs. paver patio guide compares the two approval paths side by side.