Looking for accessory dwelling unit services in Jacksonville, FL? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Jacksonville 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 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

These services cover the end-to-end process of adding a secondary home to your property. This includes initial zoning checks, architectural design, permit filing, and final construction. You need these services when you want to create a separate living space for family, guests, or as a rental unit, but don’t want to manage the complex legal and structural requirements on your own.

Frequently asked in Jacksonville

What are the disadvantages of ADUs?

How much does an ADU cost in Florida?

What are the rules for ADUs in Florida?

Florida has state laws that aim to make ADUs easier to build, but local city ordinances still apply and can vary. These rules often cover lot size, setbacks, and parking. Working with local professionals is crucial for ensuring compliance with Jacksonville's specific regulations. They know the local requirements.

Is ADU allowed in my neighborhood?

ADUs are generally permitted in many residential zones across Florida, but specific neighborhood restrictions or design guidelines might exist. It's always best to verify. A quick call can provide you with advice tailored to your specific address in Jacksonville.

What are the rules for ADU in California?

California has state-level laws encouraging ADUs, but local jurisdictions still set specific requirements. These can include setback rules, lot coverage limits, and parking requirements. Understanding these nuances is key. If you're considering an ADU in a California city, getting local advice is essential.

California has offered various grant programs to help homeowners build ADUs, sometimes covering a significant portion of the cost. These programs often have income and eligibility requirements. Details can change, so it's important to check current availability. A local ADU service can guide you on potential funding options.

Also serving nearby: Gainesville · Palm Coast · Deltona · Savannah · Orlando

All cities in Florida →

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

Service area details

985,843residents

1,319per sq mile

8ZIP codes served

Serving all of Jacksonville — population 985,843; about 1,319 residents per square mile across 747.3 sq mi. ZIP codes covered include 32099, 32201, 32202, 32203, 32204, 32205, 32206, 32207.

Neighborhoods served in Jacksonville: Avondale, Riverside, San Marco, Springfield, Beaches, Downtown Jacksonville — and every surrounding area.