What requires a permit, what is exempt, and how the Residential Code of Ohio applies to outdoor living projects in Portage County — from Aurora and Kent to Ravenna and the townships. Reviewed August 2026.
Ohio's Residential Code (RCO) sets the baseline: permits are required for attached decks, roofed structures, and detached buildings of 200 square feet or more — one-story detached accessory structures under 200 square feet are exempt, including from frost footings. Pools holding more than 24 inches of water require a permit and a 48-inch barrier under Ohio Revised Code 3781.102, with self-closing, self-latching gates latched at least 54 inches above grade. The Portage County Building Department in Ravenna serves most of the county; Kent and some municipalities handle their own — the address decides where your application goes, and zoning setbacks come from your city or township either way.
At-grade paver and concrete patios are flatwork — generally no building permit, though setbacks and drainage apply. Anything structural bears below Ohio's 32-inch frost line, and retaining walls over four feet from the bottom of the footing typically require a permit and engineering. Around Aurora's lake communities and the county's wetter soils, base preparation and drainage design decide how a patio survives freeze-thaw.
Attached decks require a permit and inspections — frost-depth footings, ledger attachment, and guardrails. A detached one-story accessory structure under 200 square feet is exempt; a pavilion or pergola built for living space, attached to the home, or carrying electrical, gas, or a motorized louvered roof should be planned as permitted, engineered work. Allscape submits stamped engineering with every motorized pergola application.
The short version of Ohio's rules for the three most common outdoor living projects. Confirm specifics with your city or the county building department — requirements are finalized at plan review.
No building permit for at-grade flatwork in most cases. Setbacks and drainage apply. Retaining over four feet triggers engineering; structural elements bear below the 32-inch frost line.
Attached deck: permit required. Detached one-story structure under 200 sq ft: exempt, even from frost footings. Occupied, attached, or motorized structures: permitted, engineered work.
Permit required over 24 inches of water depth — plus a 48-inch barrier with self-closing, self-latching gates latched at 54 inches, per Ohio Revised Code 3781.102.
Portage County including Aurora, Kent, Streetsboro, Ravenna, Hiram, Mantua, Garrettsville, and the townships. The county building department in Ravenna serves most addresses; a few municipalities handle their own — Allscape confirms the right office before submission.
