Do I need a permit for shed or accessory structure in Unincorporated Polk County?
Yes. In Florida, shed or accessory structure generally requires a permit, and Unincorporated Polk County is no exception.
Florida has no statewide small-shed exemption. The widely repeated rule that a shed under 120 square feet needs no permit comes from the model International Codes, and Florida did not adopt it: section 105.2 of the Florida Building Code, Building exempts only specified gas, mechanical and plumbing work, with no category exempting detached accessory structures. Where a size threshold exists it is a local ordinance, and it genuinely differs, so ask your building department for the line that applies at your address. Any shed with electricity, plumbing or a permanent foundation needs a permit regardless of size, and zoning setbacks, flood zone rules and wind anchoring apply even when no building permit is required.
Florida and local notes for Unincorporated Polk County
Polk County's own permitting office is the Polk County Building Division, reachable on 863-534-6080 at https://www.polkfl.gov/services/building/. Its online permit portal is https://aca-prod.accela.com/POLKCO/. It issues permits for the unincorporated county. If your city does not run its own building department, and many smaller Florida municipalities do not, this is the office that will handle the job. Ask specifically about the size that triggers a permit and about setbacks, since those are set locally and are the two things people most often get wrong on a shed. Polk County lists pre-manufactured storage buildings, and construction of any building or structure regardless of size, as work requiring a permit. The only storage exemption is a reach-in, closet-type prefabricated unit no taller than 5 feet (mean height), no larger than 50 sq. ft. and 250 cubic feet, with no electrical or plumbing. Polk LDC Section 209 requires a building permit before an accessory structure is built, requires a permitted principal use on the parcel first (except bona fide agricultural structures), and limits placement to the side or rear yard outside required setbacks, buffers, rights-of-way, and easements. Under LDC Section 209.G an accessory structure larger than the home is allowed only up to 150% of the home's height and 2,000 sq. ft. or 150% of the home's floor area on lots of two acres or more, by variance, or for bona fide agricultural use. Vehicles, walk-in freezers, and mobile homes may not be used as accessory structures.
Documents you may need
- Permit applicationLikely required
- Site plan showing setbacksLikely required
- Structure dimensions or manufacturer drawingsSometimes required
- Anchoring or tie-down detailsSometimes required
- Permit or zoning applicationLikely required
- Site plan showing setbacks and distance to lot linesLikely required
- Anchoring or tie-down details for wind loadSometimes required
- Polk County building permit application (Accela Citizens Access portal)Likely required
- Site plan showing the shed and its setbacks to property linesLikely required
- Construction Waste/Setback Form (before permit issuance)Likely required
- Owner Builder Disclosure Statement when the owner pulls the permitSometimes required
Possible inspections
- Foundation or slab inspection
- Framing and anchoring inspection
- Final inspection
- Slab inspection (prefabricated shed permits up to 500 sq. ft.)
- Building final, with photos of engineered blocking and anchoring and setbacks for a virtual inspection
Frequently asked questions
- Do I need a permit for shed or accessory structure in Unincorporated Polk County?
- Yes. In Florida, shed or accessory structure generally requires a permit, and Unincorporated Polk County is no exception. The documents and inspections sections on this page list what the building department typically asks for.
- Who issues the permit in Unincorporated Polk County?
- The local building department for Unincorporated Polk County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.