Jacksonville charges mobility fees on new dwelling units under Zoning Code Ch. 655 Pt. 5, including ADUs, calculated by zone and unit type. Florida HB 1339 (2024) caps ADU impact fees at the single-family rate and exempts qualifying small ADUs in some scenarios. Total ADU permit and fee costs typically range $3,000 to $8,000 in Jacksonville. JEA water/sewer hookups are billed separately by JEA.
Jacksonville's mobility fee system replaces traditional transportation impact fees and is administered by the Concurrency and Mobility Management System Office (CMMSO) under Zoning Code Ch. 655, Part 5 (Sec. 655.501 et seq.). Mobility fees vary by mobility zone (1-10) and land-use type; ADUs are typically assessed at a reduced rate compared to a full single-family dwelling. Florida HB 1339 (2024) requires that ADU impact fees not exceed the single-family rate and authorizes local governments to fully waive fees for affordable ADUs. School concurrency fees apply if the ADU adds bedrooms in a school district with capacity issues. JEA water, sewer, and electric connection charges are separate from city fees and depend on whether the ADU uses the primary dwelling's existing service or a new meter. Building-permit plan-review and inspection fees are set in Code Ch. 320 Pt. 4 (Sec. 320.402 et seq.). Some neighborhoods served by stormwater MSBUs add per-unit stormwater charges. Total out-of-pocket cost for a typical 600-sq-ft ADU permit ranges from approximately $3,000 to $8,000 depending on zone, JEA hookups, and whether a new electrical service is required.
Failure to pay mobility fees prior to permit issuance prevents the building permit from being released. Liens may be filed under Ch. 655.512 for unpaid impact fees. Operating an ADU without paying applicable fees can result in revocation of the Certificate of Occupancy.
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