Accessory Structures in Spring Hill, FL (2026)
5 verified accessory structures rules for Spring Hill, Florida, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Hernando County permits an Accessory Dwelling Unit (ADU) only as an attached addition to an owner-occupied single-family home — detached backyard cottages, guest houses, and tiny homes on the same lot are NOT permitted. The ADU is capped at 50% of the primary dwelling's gross habitable floor area, may have its own kitchen, bathroom, sleeping area, and laundry, and may not be sold separately. Maximum of 2 dwelling units per lot (primary + ADU). Florida has no statewide ADU mandate.
Spring Hill ADU Rules
Heavy RestrictionsShed Rules
Under Hernando County Ordinance 26-38 (2024), sheds with impervious roof coverings of 120 sq ft or less no longer require a zoning permit. The maximum allowable shed wall height is 8 ft (raised from 5 ft). Sheds must sit at least 5 ft from side and rear lot lines in residential districts (Hernando County Code Appendix A). Sheds may not function as dwelling or living space. Sheds with electrical, plumbing, or concrete work require separate building permits regardless of size. Florida Building Code applies for any shed over 600 sq ft.
Spring Hill Shed Rules
Few RestrictionsGarage Conversions
Converting a Spring Hill garage to habitable living space requires a building permit and electrical permit from the Hernando County Building Division under the Florida Building Code 7th Edition (change of occupancy from U to R-3). If the conversion adds a kitchen and separate entrance, it becomes an Accessory Dwelling Unit subject to Hernando County's strict ADU rules (attached only, 50% size cap, owner-occupied, no separate sale). The conversion may not reduce off-street parking below the minimum required for the dwelling.
Spring Hill Garage Conversion
Some RestrictionsCarport Rules
Hernando County Code Appendix A permits detached carports as accessory structures in residential districts with a minimum 5 ft setback from side and rear property lines. Attached carports must meet the principal building's yard setbacks for the district (typically 25 ft front, 10 ft side, 20 ft rear in R-1B). Carports require a building permit from the Hernando County Building Division for structural review under the Florida Building Code 7th Edition with engineered wind-uplift anchorage for Hernando County's 130-140 mph wind zone.
Spring Hill Carport Rules
Some RestrictionsTiny Homes
A tiny home in Spring Hill on a permanent foundation is treated as either a single-family dwelling (must meet the underlying Hernando County residential district's minimum lot size, setbacks, and 600-900 sq ft minimum living area) or as an attached ADU under Hernando County's strict ADU rules (50% of primary, attached only, owner-occupied). Tiny homes on wheels (THOWs) registered as RVs or park-model trailers are NOT permitted as residences. HUD-Code manufactured homes are permitted only in the R-1MH Manufactured Home district.
Spring Hill Tiny Home Rules
Heavy RestrictionsLooking for Hernando County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Spring Hill city rules.
Accessory Structures in Hernando County →