Cost to build accessory dwelling unit

Looking for cost to build accessory dwelling unit in Hialeah, FL? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve Hialeah 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 is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Determining the cost requires looking at site preparation, foundation work, and the level of interior finishing you choose. Costs change based on whether you opt for a pre-designed layout or custom architecture. You should research these costs when you are ready to evaluate the financial return of your property upgrade. Exact pricing confirmed free on the call.

Frequently asked in Hialeah

What are the disadvantages of ADUs?

How much does an ADU cost in Florida?

The cost to build an ADU in Florida, including Hialeah, depends on many factors like size, materials, and site preparation. Specific challenges with drainage or utility connections in Hialeah's dense urban setting can also influence pricing. A precise cost requires a site-specific assessment. A complimentary quote will give you the most accurate figures.

What are the rules for ADUs in Florida?

Is an ADU allowed in Maryland?

This service is for Hialeah, Florida, not Maryland. ADU regulations are highly localized and vary significantly by state and municipality. If you are in Maryland, you will need to find a local ADU service provider who understands their specific laws and building requirements.

What are the rules for ADUs in Florida?

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

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

Service area details

221,300residents

10,254per sq mile

8ZIP codes served

Serving all of Hialeah — population 221,300; about 10,254 residents per square mile across 21.6 sq mi. ZIP codes covered include 33002, 33010, 33011, 33012, 33013, 33014, 33015, 33016.

Neighborhoods served in Hialeah: Palm Springs North, Lake Mary, West Hialeah, Country Club, Fountainbleau — and every surrounding area.