Accessory dwelling unit permit cost — Miami, FL
Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
Frequently asked in Miami
What is the average accessory dwelling unit cost in Miami?
The average cost of an accessory dwelling unit in Miami can vary widely based on size, design, and materials. Factors like foundation requirements, plumbing, electrical work, and finishes all contribute to the price. Custom designs and high-end finishes will naturally increase the cost compared to simpler, more standard builds. For a precise figure tailored to your project, a detailed quote is necessary. Call us for an estimate.
What is involved in accessory dwelling unit construction in Miami?
What does accessory dwelling unit mean in Miami?
In Miami, an accessory dwelling unit (ADU) is a secondary, independent living space on a single-family residential lot. This can be a detached structure, like a backyard cottage, or an attached unit, such as a converted garage or basement. ADUs provide additional housing options for family members, renters, or guests. They must comply with Miami-Dade County and city zoning ordinances. Call us to learn more.
What is the ADU cost in Miami?
What are the services for accessory dwelling unit services in Miami?
Can I get an emergency ADU in Miami?
What are the requirements for ADU building in Miami?
Also serving nearby: Hialeah · Miami Gardens · Miramar · Hollywood · Pembroke Pines
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
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: South Beach, Wynwood, Coral Gables, Brickell, Coconut Grove — and every surrounding area.
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