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Deck Construction · Cache County, Utah
In Utah, a Deck Construction requires a building permit.
The county's own Building Permit Application requires the square footage of decks and porches to be disclosed alongside every other level of the structure, and its Zoning Clearance step (Step 2 of building in unincorporated county areas) applies to any type of structure, not limited to single-family dwellings, accessory structures, or agricultural buildings, meaning decks are captured by the same general permitting requirement, with no deck-specific size exemption identified distinct from the county's separate 200-square-foot shed exemption. Plans are reviewed under the Cache County Building Department (unincorporated areas plus code (IRC Cache County Buildin); apply through Cache County Building Inspection before work begins.
Source: Cache County Building Department (unincorporated areas plus , IRC Cache County Buildin · 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).
Because of severe winter weather in Utah, any exterior structures or footings must be set below the local frost line to prevent shifting, as mandated by the Utah State Building Code.
Utah zoning is heavily influenced by rapid population growth and water availability, with local governments increasingly adopting high-density transit-oriented zoning. Fortunately, Utah 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 Cache County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Cache County Building Inspection ((435) 755-1650). If you have paid for a permit here, you can add it here to help others.
Office: Cache County Building Inspection
Address: 179 N Main St, Logan, UT 84321, USA
Phone: (435) 755-1650
Source: official Cache County government records. Hours and procedures can change — call ahead to confirm.
In Cache 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 Utah Division of Occupational and Professional Licensing 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 Cache 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 Cache County Building Inspection 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. Utah 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 Utah State Building Code.
Permit fees vary by jurisdiction and by your project's valuation, so Cache County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Processing time in Cache County varies by season and current application volume at the building department; contact Cache County Building Inspection for a current estimate.
You can apply through the Cache County Building Inspection or online via the county permit portal. For questions, call (435) 755-1650.
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