Florida zoning / Miami-Dade County / Can I build ADU (accessory dwelling unit)?

Can I build an accessory dwelling unit (ADU) in Miami-Dade County, FL?

Permitted by right

Yes — you can build an accessory dwelling unit (ADU) in Miami-Dade County, Florida. It is permitted by right in the T06, T6-8-O districts.

Miami-Dade County districts that allow adu (accessory dwelling unit)

DistrictBasisMin lot sizeMax height
T06 — Urban Core Transect Zone (T6) — Sub-zone T6-8-O (Open)AI estimatenot verified — confirm with planningBy right10,000 sq ft96 ft
T6-8-O — Urban Core Transect Zone T6-8, Open (T6-8-O)AI estimatenot verified — confirm with planningBy right5,000 sq ft114 ft

Frequently asked questions

Can I build an accessory dwelling unit (ADU) in Miami-Dade County, FL?

Yes — you can build an accessory dwelling unit (ADU) in Miami-Dade County, Florida. It is permitted by right in the T06, T6-8-O districts.

Which zoning districts allow an accessory dwelling unit (ADU) in Miami-Dade County?

Permitted by right in T06, T6-8-O.

What are the lot requirements for an accessory dwelling unit (ADU) in Miami-Dade County?

In the T06 district, the minimum lot size is 10,000 sq ft and the front setback is 0 ft (standards not verified — confirm with planning). Requirements vary by district — check a specific address for its exact rules.

Checking a specific Miami-Dade County property?

Enter the address to see whether an accessory dwelling unit (ADU) is allowed there, with the site plan and application paperwork. Where Zonar has Miami-Dade County's official zoning data the answer is instant; otherwise our AI looks for the local government's own zoning map and rules for you (usually about a minute — a new area can take a few — clearly labelled AI-estimated) and tells you plainly when it can't confirm the district.

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Official Miami-Dade County resources

Informational only — not legal or professional zoning advice. Permitted-use tables and ordinances change; verify with the Miami-Dade County planning department before making purchase or construction decisions.