Unincorporated Walton County, Florida requires a building permit for most construction, though some small owner-built structures may be exempt outside the Coastal Building Zone1. County zoning districts and land-use regulations apply throughout unincorporated Walton County23. Florida DEP directly handles septic permits in Walton County45.
At a glance
- Building permit
- Required, issued by the Walton County Building Division1
- Small-structure exemption
- Owner-built structures up to 400 sq ft, or additions up to 100 sq ft, may be exempt outside the Coastal Building Zone1
- Zoning
- Yes, county zoning districts and land-use rules apply in unincorporated Walton County23
- Septic permits
- Handled by Florida DEP directly, not the county, since January 2, 202545
- Owner-builder
- Allowed for a single-family home with a signed Construction by Owner Disclosure Statement6
- Accessory dwelling units
- Allowed in residential zoning districts if under 800 sq ft; neighborhood plans may add restrictions78
- RV living
- One temporary RV is allowed on RLD parcels of at least 5 acres outside flood hazard areas, subject to sanitation, setback and use limits9
- Manufactured homes
- Allowed in all residential land-use districts if the home meets the specified certification standards10
Who to call
Building permits
Walton County Building Division
Building permits, plan review and inspections under the Florida Building Code for unincorporated Walton County
117 E. Sloss Ave., DeFuniak Springs, FL 32433
Planning & zoning
Walton County Planning and Development Services
Zoning administration, development order review, Land Development Code compliance and floodplain management (FEMA flood zone determinations) for unincorporated Walton County
842 State Highway 20 East, Unit 110, Freeport, FL 32439
Zoning
Walton County Land Development Code, Chapter 4 (Resource Protection Standards)
The county's development-order requirement and resource-protection standards, including flood-hazard-area rules for RVs and park trailers, administered by Planning and Development Services
Septic permits
Florida Department of Environmental Protection - Onsite Sewage Program (OSTDS)
OSTDS (septic) permits for Walton County, administered directly by the Florida Department of Environmental Protection rather than the county or a local health department
3900 Commonwealth Boulevard, Tallahassee, FL 32399-3000
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Walton County, Florida?
Walton County requires a building permit for any construction or alteration that requires the Building Department to do an inspection using the technical codes, enforced under the 2023 Florida Building Code and the 2020 National Electrical Code, effective January 1, 202111112. Outside the Coastal Building Zone, certain owner-built, non-habitable structures of 400 square feet or less, and additions to living space of 100 square feet or less, may be exempt with Planning Department consultation, and non-heated or non-cooled detached accessory structures under 400 square feet may also qualify11. Florida also exempts qualifying nonresidential farm buildings, farm fences and farm signs on land used for bona fide agricultural purposes from building-code and local code or fee requirements, but not from floodplain rules13. If you plan to act as your own contractor on a single-family home, you sign a Construction by Owner Disclosure Statement under Florida Statute 489.103(7), which requires you to personally appear, sign, and directly supervise construction6.
Who is the Walton County building department, and how do you reach them?
The Walton County Building Division issues building permits for unincorporated Walton County and enforces the Florida Building Code1. Its office is centrally located at 117 E Sloss Ave in DeFuniak Springs, open Monday through Friday, 8:00 a.m. to 4:30 p.m.14. Call the Building Division at (850) 892-8160, or email [email protected]14. For zoning and Land Development Code questions rather than permits, reach Walton County Planning and Development Services at (850) 267-1955, or by mail at 842 State Highway 20 East, Unit 110, Freeport, FL 3243915.
Does Walton County have zoning, and what does that mean for your parcel?
Yes. Walton County divides its unincorporated area into zoning districts and applies county land-use regulations there; use the county's GIS zoning layer and Chapter 2 district descriptions to identify the rules for a specific parcel2316. Single-family residential structures generally have setbacks of 20 feet in front, 7.5 feet on the sides and 15 feet in the rear, but scenic corridors, buffers, wetlands, historic lots and other standards can change the result17. Minimum lot size is also context-specific: land without central water and sewer must meet the applicable state onsite-sewage lot-size rules, while certain wetland density-transfer lots have a 5,000-square-foot minimum excluding wetlands18. Accessory dwellings under 800 square feet are allowed in districts permitting residential development, cannot be separate short-term rentals, and may face added neighborhood-plan restrictions78. Manufactured homes are allowed in all residential land-use districts when they meet the specified HUD or Florida certification standard10.
How do septic permits work in Walton County?
Walton County is one of the Florida counties where the Florida Department of Environmental Protection now manages septic system permitting directly, after DEP took over from the Florida Department of Health in Walton County on January 2, 202545. To apply, you download and complete an Application Form (DEP4015, page 1), complete a Site Plan (DEP4015, page 2), and use DEP's online permit and service request portal, after a required site evaluation of soil and topography confirms the property can support the system1920. Statewide, a permit is required to install, replace, repair, modify or abandon an onsite sewage treatment and disposal system, and for a single-family home you can submit proof of your OSTDS application alongside your building permit application21. Soils matter here: only about 19.1% of Walton County's soils carry no severe limitation for a conventional septic drain field, so plan for a site evaluation early and budget for the possibility of an engineered or alternative system on much of the county's land22.
Can you live in an RV or tiny home on your land in Walton County?
Walton County allows one RV as a temporary use on a Rural Low Density Residential parcel of at least 5 acres outside flood hazard areas, with or without a primary home9. The owner must lawfully dispose of solid waste and grey and black wastewater; the RV cannot be rented, used as a short-term vacation rental, permanently affixed or placed inside the primary-structure setbacks9. In flood hazard areas, an RV or park trailer must generally remain for fewer than 180 consecutive days or stay fully licensed and highway-ready, without permanent additions, decks or stairs23. RVs are prohibited in the Regulatory Floodway, Coastal High Hazard Areas and Coastal A Zones except in existing RV parks, subject to the stated temporary-parking exception for a previously developed parcel23. Walton County has not confirmed a complete tiny-home occupancy rule; ask Planning and Development Services how the parcel's district, building code and dwelling type apply15.
What are the steps to build a home in Walton County?
- Identify the parcel's zoning district in the county GIS, then confirm its allowed use, minimum lot size, setbacks and development-order requirements with Walton County Planning and Development Services16181715.
- If you plan to build without a licensed general contractor, sign Walton County's Construction by Owner Disclosure Statement and personally supervise the work6.
- Apply for a site evaluation and an OSTDS permit through the Florida Department of Environmental Protection before fixing the house location421.
- If the parcel is in a mapped flood hazard area, confirm the required elevation and development order with Planning and Development Services2415.
- Submit the building permit application to the Walton County Building Division under the applicable Florida Building Code1214.
- Schedule the required Building Division inspections as work proceeds14.
What should you check before buying land in Walton County?
Walton County sits on the Gulf Coast, and a typical home insurance premium here runs about $10,031 a year, so get a parcel-specific quote before you commit25. Only about 19.1% of the county's soils carry no severe limitation for a conventional septic drain field, so order the required site evaluation early enough to account for an engineered or alternative system2221. A permit from the appropriate water management district or its delegated authority is required before constructing, repairing or abandoning a water well in Florida; ask that authority about any district-specific exceptions26. About 23.1% of Walton County's land is federally owned, so verify legal access and boundary conditions on parcels near public tracts27. Dividing land into 20 or more parcels triggers Walton County's major-development review process, with Technical Review Committee, Planning Commission and Board of County Commissioners approval required28. The effective property-tax rate is about 0.5%, with a median annual bill near $1,7092930.
Watch-outs
- Walton County's septic authority changed recently: the Florida Department of Environmental Protection took over septic permitting from the Florida Department of Health in Walton County on January 2, 2025, so don't rely on older references to the county health department's septic program5.
- The RLD rule allows only temporary RV use on qualifying parcels, and flood-hazard restrictions can be stricter; confirm the parcel's zoning and flood status with Walton County Planning and Development Services92315.
- Accessory dwellings must be under 800 square feet under the general county rule, cannot operate as separate short-term rentals, and may face additional neighborhood-plan restrictions7.
Sources
- Permit Rules (2026 county census)
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Code Compliance Department, quoted and re-checked
- Florida DEP - OSTDS Permitting FAQ and County Table (2026 county census)
- Onsite Sewage Program — Florida Department of Health in Walton County, quoted and re-checked
- Walton County - Construction by Owner Disclosure Statement (2026 county census)
- Planning Department FAQs, quoted and re-checked
- Planning Department FAQs, quoted and re-checked
- Walton County Land Development Code: Chapter 2 | Zoning Districts, quoted and re-checked
- Planning Department FAQs, quoted and re-checked
- Permit Rules, quoted and re-checked
- Permits, quoted and re-checked
- Florida Statutes § 604.50, Nonresidential farm buildings; farm fences; farm signs (Florida statewide rule), quoted and re-checked
- Walton County Building Division (mywaltonfl.gov)
- Walton County Planning and Development Services (mywaltonfl.gov)
- Walton County Land Development Code: Chapter 2, quoted and re-checked
- Walton County Land Development Code: Chapter 5, quoted and re-checked
- Walton County Land Development Code: Chapter 5, quoted and re-checked
- Florida Department of Environmental Protection - Onsite Sewage Program (OSTDS) (floridadep.gov)
- Onsite Sewage Program — Florida Department of Health in Walton County, quoted and re-checked
- OSTDS Construction Application (Florida statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Walton County Land Development Code: Chapter 4 | Resource Protection Standards, quoted and re-checked
- Building Requirements, quoted and re-checked
- Typical home insurance premium: Bolthole Index county data
- Water Well Contractor Licensing and Permitting (Florida statewide rule), quoted and re-checked
- Federal land share: Bolthole Index county data
- Residential Development, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.