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Bay County hasn't published an ADU size rule we could confirm. Here's an estimate from nearby counties and who to call to get the exact rule.
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| ADUs allowed? | Set by county rule — not confirmed for this county yet; see below |
|---|---|
| Maximum ADU size | Not published — see the estimate below |
| Owner must live on site? | Not confirmed |
| Manufactured home as an ADU? | Often allowed, subject to the county's ADU and zoning rules |
Not published. Nearby Panhandle counties typically allow 750–1,200 sq ft, or 50% of the main home (estimate).
This range is based on the published rules of verified neighbors: Escambia, Santa Rosa, Okaloosa, Walton, Leon. It's a planning estimate, not Bay County's rule.
County seat: Panama City. Call the county Planning/Zoning or Building Dept to confirm current ADU rules.
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 Bay County before you build.
Confirm with Bay County: 850-248-8250 · 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.
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