Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.
About this service
Obtaining an ADU permit is the legal process of getting city approval for your secondary structure. You need this documentation before any construction begins to ensure your build meets local safety and zoning codes. The permitting phase can involve architectural plans and engineering reviews. Fees and design costs for this stage typically add several thousand dollars to your project. Exact pricing confirmed free on the call.
Frequently asked in Boca Raton
What are the advantages of adding an accessory dwelling unit in Boca Raton?
How much does it typically cost to build an accessory dwelling unit in Boca Raton?
Are there grants available for accessory dwelling units in Boca Raton?
What is the process for getting an accessory dwelling unit permit in Boca Raton?
Can I build a prefabricated accessory dwelling unit in Boca Raton?
What are the rules for accessory dwelling units in Boca Raton?
How do I find accessory dwelling unit companies in Boca Raton?
Also serving nearby: Pompano Beach · Coral Springs · Fort Lauderdale · Sunrise · Davie
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Boca Raton — population 99,974; about 3,426 residents per square mile across 29.2 sq mi. ZIP codes covered include 33427, 33428, 33429, 33431, 33432, 33433, 33434, 33464.
Neighborhoods served in Boca Raton: Mizner Park, Royal Palm Yacht & Country Club, Boca Bay Colony, Harborside, Boca Pointe — and every surrounding area.
Areas we serve
Browse by state, then city.
