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How big a backyard home (accessory dwelling unit) can be in Putnam County, who can build one, and who to call to confirm — from the county's published rules.
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| ADUs allowed? | Yes, with conditions |
|---|---|
| Maximum ADU size | Putnam hasn't published an ADU size cap in our records. |
| Minimum lot size | 1 acre (typical) |
| 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 |
Allowed in AE, AG, RE, R-1, R-2 and some commercial districts WITH a special-use permit. Guest houses/ADUs intended for temporary guests. One extra bedroom may be approved by the zoning board. Palatka files all applications through the county first.
Source: Putnam County Code; 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 Putnam County before you build.
Confirm with Putnam County: 386-329-0316 · 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, with conditions. Allowed in AE, AG, RE, R-1, R-2 and some commercial districts WITH a special-use permit. Guest houses/ADUs intended for temporary guests. One extra bedroom may be approved by the zoning board. Palatka files all applications through the county first.
Putnam hasn't published an ADU size cap in our records.
Our records don't confirm an owner-occupancy requirement for Putnam 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 Putnam County's ADU size, lot, and setback rules. Confirm with the county for your parcel.
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