Accessory Dwelling Units Built and Permitted in Jacksonville and Duval County
Accessory dwelling units — ADUs — are one of the most practical investments a Jacksonville homeowner can make. A properly permitted and built ADU adds a rentable unit to your property, creates space for extended family, or provides a flexible use structure that adapts as your household's needs change. JK Prestige Constructor Corp builds ADUs throughout Jacksonville and Duval County, managing the permitting process, design, and construction from start to finish.
"When a Jacksonville family trusts us with their home, we treat it exactly as we would our own. 500+ projects later, that standard has never changed." — J. Karras, Founder & CEO, JK Prestige Constructor Corp
A freestanding backyard cottage or carriage house on your Jacksonville property. Fully independent with its own kitchen, bath, and entrance. Requires its own utility connections and all applicable permits from the City of Jacksonville or Duval County.
Converting space above an existing garage or building a new garage with a living unit above is among the most efficient ADU configurations. We manage the full build including structural requirements for the second-floor living space.
An addition to your home that creates a separate, self-contained living unit with its own entrance. Similar in scope to an in-law suite but designed and permitted specifically as an ADU for flexible long-term use.
Converting an existing attached or detached garage to a habitable living unit. Requires proper insulation, HVAC, plumbing if a kitchen is included, and updated electrical — all managed and permitted by JK Prestige.
Florida's ADU landscape has evolved significantly in recent years. State legislation passed in 2023 (HB 1573) requires local governments to permit ADUs in any area zoned for single-family residential use, significantly expanding where ADUs can be built in Jacksonville and Duval County. This legislation has removed many of the previous zoning barriers that made ADU construction difficult, but permitting requirements — building, electrical, plumbing, and mechanical — still apply in full.
In Jacksonville, ADU permits are processed by the City of Jacksonville's Building Inspection Division. Applications require site plans showing the ADU's location relative to property lines and existing structures, floor plans, and construction documents meeting Florida Building Code requirements. We prepare and submit complete permit packages on your behalf.
The income potential from a Jacksonville ADU is meaningful. Market rent for a well-built 400-600 square foot ADU in Jacksonville varies by neighborhood but generally ranges from $900 to $1,800 per month. Over a 10-year period, this income can offset a significant portion of the ADU construction cost, making the investment one of the better financial decisions available to homeowners in the current market.
ADU design requires balancing the needs of future occupants with the constraints of the existing lot. Setback requirements, lot coverage limits, maximum ADU size limits, parking requirements, and utility connection logistics all affect what is practically achievable on your specific property. We assess all of these factors during the initial site consultation before any design work begins.
ADUs on lots in flood zones require additional attention. If your Jacksonville property has a flood zone designation, the ADU foundation may need to be elevated, which adds cost but ensures the structure meets insurance and code requirements. We identify flood zone status and its implications during the site visit.
Financing for Jacksonville ADU projects is available through our third-party lending partners. With the income potential of a rented ADU, many financing structures make sense. Ask about available options during your estimate consultation.
We verify your property's zoning, flood zone status, setback requirements, and lot coverage limits to determine what ADU configurations are feasible before designing anything.
We develop an ADU layout based on your property constraints and goals, then deliver a detailed written estimate within 48 hours.
We prepare and submit complete permit applications to the City of Jacksonville Building Inspection Division, including all required drawings and documentation.
Foundation, framing, roofing, mechanical, electrical, plumbing, and finish work are all managed by JK Prestige. Utility connections to the main home or street are coordinated separately with appropriate providers.
We obtain final inspection approval and the certificate of occupancy required before the ADU can be legally occupied or rented.
Yes. Florida legislation (HB 1573, 2023) requires municipalities to permit ADUs in single-family zones. Jacksonville's Building Inspection Division processes ADU permits. Setback requirements, lot coverage limits, and utility requirements still apply.
ADU construction costs in Jacksonville range from approximately $80,000 for a basic detached studio to $200,000+ for a fully equipped two-bedroom ADU with a full kitchen and bath. Size, finish level, and utility connection complexity are the primary drivers.
Yes. A properly permitted ADU can be rented to tenants in Jacksonville. HOA restrictions may apply in some neighborhoods — check your HOA documents if applicable. Short-term rental (Airbnb/VRBO) is subject to Jacksonville's short-term rental ordinance, which varies by zone.
Most ADU projects take 4 to 8 months from permit approval depending on size and configuration. Permit review at the City of Jacksonville typically takes 2-6 weeks for a complete application.
A building permit plus subpermits for electrical, plumbing (if kitchen or bath is included), and mechanical are required. We manage all permit applications and inspections.
Fully licensed in Florida, bonded and insured on every project.
Owner personally involved in every project from estimate to handover.
Detailed itemized estimates within 48 hours. No obligation.
Third-party financing options. Ask about promotional rates.
Call or submit your details. We respond within 48 hours with a written estimate.
Request Your Free Estimate