US Land Life

South

Buying Land in Florida: The State Layer Above County Zoning

Florida is more centralized than most states in some ways -- one statewide building code, one statewide septic rule -- and more regionally fragmented in others, with water permitting split among five Water Management Districts instead of running through the county. Here's the state-level framework before you drill into a specific county.

Water rights run through five regional Water Management Districts, not the county

Florida is a riparian-rights state, but riparian doctrine is layered under a heavy state and regional permitting system. Rather than counties, Florida is divided into five regional Water Management Districts (WMDs) -- Northwest Florida, Suwannee River, St. Johns River, Southwest Florida, and South Florida -- each with its own governing board, boundaries that follow watersheds rather than county lines, and its own consumptive use permit (CUP) rules under the Florida Department of Environmental Protection's (DEP) statewide oversight.

Withdrawing groundwater or surface water beyond an ordinary household exemption threshold generally requires a consumptive/water use permit from the WMD covering that location, with the district evaluating whether the proposed use is reasonable-beneficial, won't interfere with existing legal users, and is consistent with the public interest. Because district boundaries don't track county lines, a buyer needs to identify which WMD actually covers a specific parcel -- a property near a district boundary can be a short distance from a neighboring parcel that is regulated by an entirely different district office with different permit thresholds and application processes.

Wetlands and dredge-and-fill: the Environmental Resource Permit (ERP) program -- and a live 404 wrinkle

Florida regulates dredging, filling, and other work affecting wetlands and surface waters through the Environmental Resource Permit (ERP) program, implemented jointly by DEP and the five WMDs. An ERP is a state-level environmental permit, separate from county zoning and building permits, and it is typically the first thing that determines whether -- and how much -- of a wetland-containing parcel can actually be cleared or built on.

Florida also passed legislation in 2018 aimed at "assuming" the federal Clean Water Act Section 404 dredge-and-fill program from the US Army Corps of Engineers -- meaning the state, rather than the Corps, would issue federal 404 permits directly, folded into the ERP process. EPA approved that assumption in 2020. That status changed, however: in February 2024, a federal district court vacated the underlying federal approval, and in May 2024 the D.C. Circuit declined to reinstate it while the case proceeds, so as of this writing the Corps -- not the state -- is again processing federal Section 404 permits in Florida, while DEP's state ERP program continues to run in parallel for state-law wetland requirements. This is a live legal situation, so confirm current status before assuming which agency issues which permit for a specific wetland-affected parcel.

Septic systems: one statewide rule, administered county by county

Unlike many states that leave septic standards mostly to the county, Florida regulates onsite sewage treatment and disposal systems (OSTDS, i.e., septic systems) under a single statewide rule -- Chapter 64E-6 of the Florida Administrative Code -- administered by the Florida Department of Health (DOH) under Chapter 381, Florida Statutes. The technical standards (setbacks, system sizing, soil and site evaluation criteria, permit validity periods) are set once, at the state level, rather than varying rule-by-rule across Florida's 67 counties.

What isn't centralized is the office you actually deal with: each county has its own DOH Environmental Health office (sometimes a county health department, sometimes under an interlocal arrangement), and that local office is the one that receives applications, performs the site evaluation, and issues the construction and operating permits under the statewide rule. See our national guides to perc tests and septic systems for how the underlying process works -- in Florida, the standards are set once, but the desk you call, and how fast it moves, is still local.

Building code: unusually centralized compared to most states

Florida is a genuine outlier here in a way that cuts in the opposite direction from its water rules: after Hurricane Andrew (1992) exposed how uneven and under-enforced local building codes had been, the state consolidated all of its counties and municipalities onto a single statewide Florida Building Code, which took effect in 2002 and has been updated in subsequent editions since. Local jurisdictions still adopt and enforce the code and may add limited local amendments, but they cannot weaken the statewide minimum -- a meaningfully different arrangement from states where each county or city writes and enforces its own code from scratch.

For a land buyer this mostly matters if you're planning to build: wind-load, flood-elevation, and (in the High-Velocity Hurricane Zone counties of Miami-Dade and Broward) additional impact-resistance requirements are baked into the statewide code rather than being a county-by-county gamble, though the county building department is still who issues the permit and performs inspections.

What's still decided at the county level

The WMD, ERP, DOH septic rule, and statewide building code layers described above are real and statewide (or regional, in the WMDs' case), but a specific parcel's actual buildability still runs through the county: the local land development code and zoning district, county-level subdivision and platting requirements, floodplain overlay determinations, and which DOH Environmental Health office and building department you'll actually be working with are all local. Two parcels in different Florida counties, both inside the same WMD and both subject to the same Ch. 64E-6 septic rule, can still have very different timelines and requirements once the county-specific zoning and subdivision layer is added.

That means this page tells you which agencies and rules to expect in Florida and what to verify -- it does not tell you whether a specific parcel is zoned for what you want, whether it has a viable septic site, or whether a wetland on it will be regulated by the state, the Corps, or both under the current 404 status. Those answers come from the county planning department, the applicable Water Management District, and DEP, every time.

Want to know if this specific parcel actually works?

Tell us what you're looking at and we'll connect you with a local land specialist who can help you sanity-check it before you go further.

Get local guidance

Sources

  1. Water Management Districts — Florida Department of Environmental Protection (accessed 2026-09)
  2. Consumptive Water Use Permits — South Florida Water Management District (accessed 2026-09)
  3. State 404 Program — Florida Department of Environmental Protection (accessed 2026-09)
  4. Tribal and State Section 404 Assumption Efforts — US EPA (accessed 2026-09)
  5. Onsite Sewage & Septic — Florida Department of Health (accessed 2026-09)
  6. Chapter 64E-6, F.A.C. -- Standards for Onsite Sewage Treatment and Disposal Systems — Florida Administrative Code / Florida Department of State (accessed 2026-09)
  7. Building Codes and Standards — Florida Department of Business and Professional Regulation (DBPR) (accessed 2026-09)

Last reviewed 2026-09