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Deck Construction · Johnson County, Iowa
In Johnson County, a Deck Construction under 200 sq ft generally does not require a building permit. At or above 200 sq ft, a permit is required.
The county's own FAQ states directly that construction of a deck will require a building permit, even if replacing an existing deck of the exact same size, with wholesale replacement of any singular deck component (guardrails, decking, stairs) also requiring a permit; the sole exception is a deck not exceeding 200 square feet, not more than 30 inches above grade at any point, not attached to a dwelling, and not serving the main exit door. Building permits in Johnson County are handled under the Johnson County Planning, Development and Sustainability (uni building code (IRC Johnson County Build). Local zoning, property-line setbacks, and any electrical or plumbing work can still require separate approval, so confirm the details with Johnson County Building Inspections.
Source: Johnson County Planning, Development and Sustainability (uni, IRC Johnson County Build · County-specific · Verified 2026 by StateDataIndex
Building a deck typically requires a permit if it is attached to the house, over 30 inches off the ground, or exceeds a certain square footage (often 200 sq ft).
In high-wind, tornado-prone areas, inspectors strictly verify structural anchoring and framing compliance under the Iowa State Building Code.
Iowa zoning is predominantly controlled at the county level, with ordinances specifically tailored to protect prime agricultural soil from urban sprawl. Fortunately, Iowa maintains relatively builder-friendly regulations, keeping base permit fees competitive.
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Johnson County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Johnson County Building Inspections ((319) 356-6085). If you have paid for a permit here, you can add it here to help others.
Office: Johnson County Building Inspections
Address: 913 S Dubuque St, Iowa City, IA 52240, USA
Phone: (319) 356-6085
Source: official Johnson County government records. Hours and procedures can change — call ahead to confirm.
In Johnson County, you can begin your application online through the county's permit portal, or submit blueprints and a property survey in person. Including your contractor's Iowa Division of Labor license number helps avoid rejections.
When applying for a Deck Construction permit, you or your contractor will generally need to submit the following documentation for the city's review:
Key code points for a Deck Construction in Johnson County: Decks higher than 30 inches above grade legally require guardrails (typically 36 inches high), and stairs with 4 or more risers require a handrail.
Typical processing time: a few days to several weeks, depending on current workload and the season. Contact Johnson County Building Inspections for a current estimate.
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Yes. Iowa generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Iowa State Building Code.
Permit fees vary by jurisdiction and by your project's valuation, so Johnson County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Processing time in Johnson County varies by season and current application volume at the building department; contact Johnson County Building Inspections for a current estimate.
You can apply through the Johnson County Building Inspections or online via the county permit portal. For questions, call (319) 356-6085.
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