Home › ADU Rules by County › Walton County
How big a backyard home (accessory dwelling unit) can be in Walton County, who can build one, and who to call to confirm — from the county's published rules.
Know your main home's size? Get the exact limit for your lot in seconds.
| ADUs allowed? | Yes |
|---|---|
| Maximum ADU size | Under 800 sq ft |
| Owner must live on site? | Not confirmed in our records |
| Manufactured home as an ADU? | Often allowed, subject to the county's ADU and zoning rules |
Small ADUs under 800 sq ft allowed in ALL districts that permit residential development. Cannot be used as a short-term vacation rental separate from the primary home. Must be ancillary/compatible with the primary structure and neighborhood, meeting the same setbacks. ADU area counts toward impervious-surface/stormwater calcs. Some Neighborhood Plan Areas (e.g. Inlet Beach) add restrictions. DeFuniak Springs, Freeport, Paxton self-govern.
Source: Walton County LDC Sec. 2.02.00; verified Jul 2026.
Before You Build
ADU rules are set by each county and city — Florida law (Fla. Stat. 163.31771) lets local governments allow ADUs but doesn't require it — and they can change, so always confirm the current rule with Walton County before you build.
Confirm with Walton County: 850-892-8157 · zoning department website ↗
Zoning is set locally and changes often. Answers are guidance only, not a permit guarantee. Always confirm with the local building/zoning department before purchase.
Common Questions
Yes. Small ADUs under 800 sq ft allowed in ALL districts that permit residential development. Cannot be used as a short-term vacation rental separate from the primary home. Must be ancillary/compatible with the primary structure and neighborhood, meeting the same setbacks. ADU area counts toward impervious-surface/stormwater calcs. Some Neighborhood Plan Areas (e.g. Inlet Beach) add restrictions. DeFuniak Springs, Freeport, Paxton self-govern.
Under 800 sq ft.
Our records don't confirm an owner-occupancy requirement for Walton County — ask the county zoning department before you buy.
Often yes — many Florida counties allow a manufactured or modular home as an accessory dwelling unit, subject to Walton County's ADU size, lot, and setback rules. Confirm with the county for your parcel.
Keep Exploring
Manufactured & modular homes in Walton County · ADU rules for all 67 Florida counties · ADU-sized homes in our showroom
We'll confirm Walton County's rules for your property and help you pick a home that fits — free.
Start Here