ADUs are allowed in Unincorporated Miami-DadeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Miami-Dade, FL
Is your property eligible for an ADU?
# of Properties
343,123
Owner-occupied
70%
Zoning districts
95
Avg Home Value
$396,149
Median Lot Size
0.19 acres
Avg Income
$89,176
Residential Types:
343,790 housing units
Single Family
71%
2-3 Family
2%
Apts (4+ units)
2%
Condos
25%
Zoning Districts:
405,734 parcels · 95 districts
RU-1
30%(122,159)
RU-4L
10%(40,811)
RU-3M
8%(31,259)
RU-TH
7%(28,551)
Other
45%(182,954)
ADU Rules
What can you build in Unincorporated Miami-Dade, FL?
Unincorporated Miami-Dade, FL follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum ADU size of 800 sq ft of habitable area
Detached ADU Size Limits
- –Maximum size of 800 sq ft of habitable area for a detached ADU
Max Units
- –1 per single-family lot (total); ADU or guesthouse; attached or detached.
- –Duplex or multifamily: none specified.
Parking
- –1 space/ADU; no max specified; parking on-site or in street/swale if no driveway; ADU off-street parking waived within 660 ft of a CDMP major corridor served by transit or CDMP mixed-use/rapid transit corridor; during occupancy, no more than 2 ADU vehicles may be parked on the property at a time.
Rental Restrictions
- –Minimum rental term is 1 month; short-term/vacation rentals under 30 days prohibited unless operated as a permitted vacation rental per Sec. 33-28.
ADU State Law
What can you build in Florida?
- –Florida does not have a statewide ADU mandate. There is no state-level requirement for cities or counties to allow ADUs.
- –ADUs in Florida are regulated entirely at the local level. Some jurisdictions allow ADUs broadly, others allow them with strict conditions, and some prohibit them altogether.
- –Florida Statute 163.31771 is optional. It allows local governments to adopt ADU ordinances for affordable housing, but it does not require any jurisdiction to allow ADUs, and local governments may adopt ADU rules outside of this statute.
- –County and city rules may differ. In unincorporated areas, county zoning controls whether ADUs are allowed; within city limits, municipal zoning codes apply.
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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Learn the key rules and size limits for ADUs
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ADU rules in other Florida municipalities
Rules change at the town line. Check the municipality your property is actually in.
Miami-Dade County
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