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How big a backyard home (accessory dwelling unit) can be in Lake County, who can build one, and who to call to confirm — from the county's published rules.
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| ADUs allowed? | Yes |
|---|---|
| Maximum ADU size | 1,300 sq ft or 70% of the main home, whichever is greater |
| 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 |
One accessory apartment OR ADU per single-family residence. Must match/harmonize with the principal structure. IMPORTANT for delivered homes: must sit on a solid foundation with permanent skirting and any wheels/transport mechanisms removed (a manufactured home is fine if set this way). Cities (Clermont, Leesburg, Mount Dora, Tavares) set their own rules.
Source: Lake County Land Development Regs Sec. 3.07.00; 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 Lake County before you build.
Confirm with Lake County: 352-343-9641 · 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. One accessory apartment OR ADU per single-family residence. Must match/harmonize with the principal structure. IMPORTANT for delivered homes: must sit on a solid foundation with permanent skirting and any wheels/transport mechanisms removed (a manufactured home is fine if set this way). Cities (Clermont, Leesburg, Mount Dora, Tavares) set their own rules.
1,300 sq ft or 70% of the main home, whichever is greater.
Our records don't confirm an owner-occupancy requirement for Lake 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 Lake County's ADU size, lot, and setback rules. Confirm with the county for your parcel.
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