Cost of accessory dwelling unit — Miami, FL | AccessoryDwellingUnit Solutions

Looking for cost of accessory dwelling unit in Miami, FL? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Miami and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

The total price for an ADU depends on several moving parts, including the square footage, your foundation type, and local labor rates. Choosing high-end finishes or complex site prep will naturally increase the budget, while standard layouts help keep things manageable. Exact pricing confirmed free on the call.

Frequently asked in Miami

What are the disadvantages of ADUs?

Potential disadvantages include increased utility expenses and the initial construction cost. There can also be considerations around parking and privacy for both the main home and the ADU. However, the benefits of added living space or rental income are significant. We can help you weigh these.

How much does an ADU cost in Florida?

What are the rules for ADUs in Florida?

Florida has statewide guidelines, but Miami has specific local ordinances that govern ADUs. These rules cover zoning, lot coverage, setbacks, and parking requirements. Understanding these local regulations is essential for a successful ADU project. We can help you navigate them.

Is an ADU allowed in Maryland?

This question pertains to Maryland. For ADU regulations in Miami, Florida, we focus on the city's specific zoning and building codes. These local laws dictate the feasibility and requirements for building an accessory dwelling unit. We can provide details relevant to Miami.

What are the rules for ADU in California?

This query refers to California. In Miami, Florida, ADU rules are set by city ordinances. These regulations ensure that new constructions meet safety standards and integrate well with the existing urban fabric. Let us help you understand Miami's specific requirements.

Also serving nearby: Hialeah · Miami Gardens · Miramar · Hollywood · Pembroke Pines

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More on this: HUD ADU resources — ADU policy and financing research.

Service area details

455,924residents

12,665per sq mile

8ZIP codes served

Serving all of Miami — population 455,924; about 12,665 residents per square mile across 36.0 sq mi. ZIP codes covered include 33101, 33102, 33106, 33111, 33112, 33116, 33122, 33124.

Neighborhoods served in Miami: Wynwood, Brickell, South Beach, Coral Gables, Little Havana — and every surrounding area.