Home › ADU Rules by County › Osceola County
How big a backyard home (accessory dwelling unit) can be in Osceola 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 | Not published in our records — the county sets it by zoning district. Under Florida law, compliant ADUs generally can't be capped below 1,000 sq ft or restricted below 500 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 |
Osceola's Land Development Code permits 'Accessory Living Units' (its term for ADUs) in residential zones (Ch. 3, Art. 3.6 Residential Use Siting Standards). A qualifying accessory living unit does not count toward the parcel's density, and such accessory structures are exempt from certain setbacks. Exact square-footage cap not published in summaries — confirm the parcel's district. Under state law each qualifying parcel may have up to two ADUs (min 150 sq ft each), smaller than the primary home. Kissimmee and St. Cloud self-govern.
Source: Osceola County LDC Ch. 3 Art. 3.6 (Accessory Living Units); verified Jul 2026 — allowed; exact size cap to confirm.
Inside City Limits
If the property is inside city limits, the city's ADU rules apply instead of the county's.
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 Osceola County before you build.
Confirm with Osceola County: 407-742-0200 · 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. Osceola's Land Development Code permits 'Accessory Living Units' (its term for ADUs) in residential zones (Ch. 3, Art. 3.6 Residential Use Siting Standards). A qualifying accessory living unit does not count toward the parcel's density, and such accessory structures are exempt from certain setbacks. Exact square-footage cap not published in summaries — confirm the parcel's district. Under state law each qualifying parcel may have up to two ADUs (min 150 sq ft each), smaller than the primary home. Kissimmee and St. Cloud self-govern.
Not published in our records — the county sets it by zoning district. Under Florida law, compliant ADUs generally can't be capped below 1,000 sq ft or restricted below 500 sq ft.
Our records don't confirm an owner-occupancy requirement for Osceola 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 Osceola County's ADU size, lot, and setback rules. Confirm with the county for your parcel.
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