Unincorporated Walton County, Florida requires a building permit for most construction and a separate development order for development or redevelopment12. County zoning applies outside city limits; DeFuniak Springs issues its own building permits and sets its own zoning345. Florida DEP handles septic permits both inside DeFuniak Springs and in unincorporated Walton County67.
At a glance
- Building permit
- Required, issued by the Walton County Building Division8
- Small-structure exemption
- Owner-built non-habitable structures up to 400 sq ft, or living-space additions up to 100 sq ft, may be exempt outside the Coastal Building Zone; Planning consultation is required9
- Zoning
- Yes, county zoning districts and land-use rules apply in unincorporated Walton County310
- Septic permits
- Handled by Florida DEP directly, not the county, since January 2, 2025711
- Owner-builder
- Conditional for an owner-supervised farm outbuilding or owner-occupied one- or two-family home not offered for sale or lease12
- Accessory dwelling units
- One ADU per residential lot, capped at 800 sq ft and 75% of the main home’s livable area; no RVs or short-term vacation rentals13
- RV living
- Permanent RV residence is generally prohibited; qualifying rural and agricultural parcels have limited temporary pathways141516
- Manufactured homes
- Allowed in residential land-use districts if the home meets the specified HUD or Florida certification standards17
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
public.services@floridadep.gov
3900 Commonwealth Boulevard, Tallahassee, FL 32399-3000
Contact details are copied from each office’s official page and were checked against it on October 10, 2026.
Off-grid gear
Going off-grid in Walton County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Walton County, Florida?
Unincorporated Walton County requires a building permit for construction or alteration that requires a Building Division technical-code inspection81. Covered applications submitted after December 31, 2023 must be designed and built under the 2023 Florida Building Code18. Outside the Coastal Building Zone, the Building Department may exempt an owner-built, non-habitable structure of 400 square feet or less or an addition to living space of 100 square feet or less from certain building-permit requirements, but Planning consultation is still required9. Qualifying nonresidential farm buildings, farm fences and farm signs are exempt from the Florida Building Code and local code or fees, but not floodplain rules19. Walton County publishes building-permit fee schedules, but the amount depends on the project20. A separate Florida owner-builder pathway lets an owner directly supervise work on an owner-occupied one- or two-family home not offered for sale or lease; it does not eliminate applicable building permits or inspections21.
Who is the Walton County building department, and how do you reach them?
The Walton County Building Division handles building permits for unincorporated Walton County; call (850) 892-8160 or email permits@mywaltonfl.gov822. The Building Division office is at 117 E Sloss Ave in DeFuniak Springs and opens Monday through Friday, 8:00 a.m. to 4:30 p.m.22. Inside DeFuniak Springs, the city issues building permits, while Florida DEP remains the septic permitting authority46. For county zoning, development orders and floodplain questions, contact Walton County Planning and Development Services at (850) 267-1955, 842 State Highway 20 East, Unit 110, Freeport, FL 32439232.
Does Walton County have zoning, and what does that mean for your parcel?
Walton County zoning governs unincorporated land; DeFuniak Springs administers city zoning, while Florida DEP still handles septic permits there356. Walton County publishes a GIS zoning layer and district descriptions, but online code publication can lag amendments; confirm the current district rules with Planning before designing2423. County single-family setbacks generally are 20 feet front, 7.5 feet side and 15 feet rear, subject to buffers, scenic corridors, easements and other exceptions25. Impervious-surface limits vary by district, with several rural districts capped at 30%26. South Walton generally has a 50-foot height limit, reduced to 40 feet in Grayton Beach and 32 feet in Point Washington Neighborhood Plan Areas; other areas and overlays have separate limits27. Qualifying lots served by central water and sewer can have no minimum individual lot area, but development without both follows state septic lot-size rules28. Certain wetland density transfers require at least 5,000 square feet of non-wetland lot area for single-family lots, except within an approved planned unit development29. Dividing land into 20 or more parcels requires major-development review by the Technical Review Committee, Planning Commission and Board of County Commissioners30. Code-compliant manufactured homes are allowed in residential land-use districts31.
How do septic permits work in Walton County?
Walton County is one of the Florida counties where the Florida Department of Environmental Protection manages septic permitting directly, after DEP took over from the Florida Department of Health in Walton County on January 2, 2025711. To apply, complete DEP's application, site plan and online permit request after the required evaluation of soil and topography3233. Statewide, a septic permit is required to install, replace, repair, modify or abandon an onsite sewage treatment and disposal system, and proof of an OSTDS application can accompany a single-family building-permit application34. DEP's portal provides construction inspection and re-inspection requests for a permitted system, but that does not establish routine inspection of every existing septic system35. Only about 19.1% of Walton County soils carry no severe limitation for a conventional drain field, so schedule the site evaluation before committing to a house location36. A development near an operating sewer system must connect when the system has adequate capacity; septic is the alternative where sewer is inaccessible and applicable approval is obtained37.
Can you live in an RV or tiny home on your land in Walton County?
Unincorporated Walton County generally prohibits permanent RV residence outside licensed RV parks and specified rural-district exceptions38. In Large Scale Agriculture, General Agriculture, Estate Residential, Rural Low Density and Rural Residential, legal lots of 0.5–5 acres outside platted or unplatted subdivisions can qualify for one RV under a Temporary RV Living Permit: up to 90 days, at most twice per calendar year39. Rural Low Density parcels of at least 5 acres allow one temporary RV with or without a primary home, subject to lawful waste disposal, setbacks, no rental and no permanent affixation4041. During primary-home construction, the owner can obtain a one-year permit for one RV on the same parcel where residential primary uses are allowed, with an active building permit; RV use must end within 14 days after the first certificate of occupancy42.
Walton County allows tiny-home ADUs in districts permitting residential development, with design ancillary and compatible with the primary home and neighborhood4344. The code limits ADUs to one per lot, 800 square feet and 75% of the main home's livable area; RVs and short-term vacation rentals are prohibited13. We could not confirm a primary tiny-home minimum size; ask Walton County Planning how the home is classified23.
What are the steps to build a home in Walton County?
- Identify the parcel's zoning district, then confirm the use, lot dimensions, setbacks, impervious coverage and height limit with Walton County Planning and Development Services4546474823.
- If the property is in a special flood hazard area, obtain the development order before development and the building permit before construction, then satisfy the zone-specific elevation or floodway rules4950.
- Determine whether adequate central water and sewer are available; nearby development must connect when those operating systems have capacity37.
- If septic is needed, apply early to Florida DEP for the site evaluation and OSTDS permit733.
- For a driveway connecting to a county facility, obtain the county driveway permit; the residential application comes with the new-construction building-permit packet51.
- Submit the building-permit application and applicable fees to the Walton County Building Division2022.
- If acting as your own contractor, confirm which owner-builder pathway applies and personally supervise the work21.
What should you check before buying land in Walton County?
In Walton County flood-hazard areas, temporary RVs and park trailers must stay fewer than 180 consecutive days or remain licensed and highway-ready, with quick-disconnect utilities and no permanent additions, stairs, decks or porches; permanent installation is prohibited52. Regulatory floodways, Zone V and Coastal A Zones prohibit RVs outside existing RV parks, except temporary parking on previously developed parcels when the vehicle will be removed upon a flooding threat52. Ask Walton County Planning to resolve the flood-zone and zoning conditions before relying on an RV pathway2316. Nearby operating water and sewer systems with adequate capacity require connection; a Florida well permit is required before well construction, repair or abandonment, subject to applicable exceptions3753. County-facility driveway connections, replacements and repairs require a driveway permit51. Walton County’s effective property-tax rate is about 0.5%, with a median annual bill near $1,7095455.
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 program11.
- Walton County’s temporary RV pathways require lawful gray- and black-water disposal, and construction-use RVs in flood zones must remain operational and ready for immediate highway use3942.
- Walton County’s ADU FAQ says less than 800 square feet, while the code states a maximum of 800 square feet; ask Planning before designing at that boundary561323.
Sources
- Permit Rules, quoted and re-checked
- Walton County Land Development Code, Chapter 4 (Resource Protection Standards) (mywaltonfl.gov)
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- DeFuniak Springs: CITY OF DEFUNIAK SPRINGS BUILDING PERMIT APPLICATION (Walton County), quoted and re-checked
- DeFuniak Springs: Residential (Walton County), quoted and re-checked
- DeFuniak Springs: Onsite Sewage Program (Walton County), quoted and re-checked
- Florida DEP - OSTDS Permitting FAQ and County Table (2026 county census)
- Permit Rules (2026 county census)
- Permit Rules, quoted and re-checked
- Walton County Land Development Code: Chapter 4, quoted and re-checked
- Onsite Sewage Program — Florida Department of Health in Walton County, quoted and re-checked
- Florida Statutes § 489.103 — Exemptions, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 | Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 | Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Permits, quoted and re-checked
- F.S. 604.50 — Nonresidential farm buildings; farm fences; farm signs (Florida statewide rule), quoted and re-checked
- Permits, quoted and re-checked
- 2026 Florida Statutes § 489.103, Exemptions (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 — Design and Development Standards, quoted and re-checked
- 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 — Design and Development Standards, quoted and re-checked
- Walton County Land Development Code: Chapter 5, quoted and re-checked
- Residential Development, quoted and re-checked
- mywaltonfl.gov, 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
- Onsite Sewage FAQ - Permitting, quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Walton County Land Development Code: Chapter 5, Utilities, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 | Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 2 | Zoning Districts, quoted and re-checked
- FAQs - Walton County, quoted and re-checked
- Planning Department FAQs, quoted and re-checked
- Walton County Land Development Code: Chapter 2 — Zoning Districts, quoted and re-checked
- Walton County Land Development Code: Chapter 5, quoted and re-checked
- Walton County Land Development Code: Chapter 5 — Design and Development Standards, quoted and re-checked
- Walton County Land Development Code: Chapter 5 — Design and Development Standards, quoted and re-checked
- Building Requirements, quoted and re-checked
- Permits, quoted and re-checked
- Driveway Connection Permits, quoted and re-checked
- Walton County Land Development Code: Chapter 4 | Resource Protection Standards, quoted and re-checked
- Water Well Contractor Licensing and Permitting (Florida statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Planning Department FAQs, quoted and re-checked
Written October 10, 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.