Adu cost — Miami, FL | AccessoryDwellingUnit Solutions

Looking for adu cost 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

Your ADU investment is shaped by the complexity of the site, utility hookups, and the materials you select for construction. Adding features like custom cabinetry or premium exterior siding will influence the final number compared to a standard build. Exact pricing confirmed free on the call.

Frequently asked in Miami

What are the disadvantages of ADUs in Miami?

How much does an ADU cost in Florida?

What are the rules for ADUs in Florida?

Is an ADU allowed in Maryland?

This service is for Miami, Florida, and does not cover ADU regulations in Maryland. Maryland has its own distinct state laws and local ordinances that dictate ADU permissibility and requirements. You would need to research Maryland-specific information for that area.

What are the rules for ADU in California?

Our service area is Miami, Florida, not California. California has been a leader in ADU legislation, often simplifying the approval process for homeowners. Their regulations typically address minimum unit sizes and owner-occupancy requirements. California's laws are designed to encourage ADU development.

California has implemented various grant programs to help homeowners finance ADU projects. These grants aim to make ADUs more accessible. For Miami, project costs are determined by estimate.

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

All cities in Florida →

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: Coral Gables, Coconut Grove, Brickell, Little Havana, Wynwood — and every surrounding area.