Miami-Dade County runs site-civil permitting through more agencies than almost any other Florida jurisdiction, and getting the sequence wrong is the single most common cause of a stalled land-development application. Before a grading plan gets finalized, an engineer needs to know which of three agencies has jurisdiction over which piece of the site: the county's own regulatory arm, its environmental division, and the regional water management district.
The county's Regulatory and Economic Resources department, RER, is the umbrella agency that issues most county-level development approvals, including site plan sign-off and building permits. Inside RER sits the Division of Environmental Resources Management (DERM), which is the reviewer of record for environmental impact, stormwater quality, wellfield protection, and water/sewer connection approvals. Above both, for stormwater quantity and quality plus wetland impacts, sits the South Florida Water Management District (SFWMD), which issues the state Environmental Resource Permit (ERP). A typical land-development project in unincorporated Miami-Dade — or in most of the county's municipalities, many of which route environmental review through the county — touches all three.
Which agencies regulate site-civil permitting in Miami-Dade County?
Three bodies typically have jurisdiction on a Miami-Dade land-development site: RER for county permitting and site plan approval, DERM (organizationally inside RER) for environmental resource review, and SFWMD for the state ERP. Individual municipalities within the county — Miami, Miami Beach, Coral Gables, Doral, and others — layer their own zoning and site plan review on top, but environmental and water-management jurisdiction generally still runs through DERM and SFWMD. Confirming which municipal or unincorporated-county process applies is the first call an engineer should make on a new project.
Do I need an ERP from SFWMD for a Miami-Dade project?
Most projects that create new impervious area, alter site grading, or discharge stormwater to a water body will need an Environmental Resource Permit (ERP), issued by SFWMD, DERM, or both acting under a delegated arrangement — Florida's ERP program is administered jointly by FDEP and the five water management districts, with jurisdiction split by project type and location. The ERP is the defining Florida site-civil permit: it bundles stormwater quantity and quality review with wetland and surface-water impact review into one approval rather than several separate permits. For the state-level mechanics of that split, see our Florida ERP guide and the broader Florida site-civil permitting guide.
What does DERM review, and how is that different from RER's role?
DERM's review is substantive and environmental: stormwater quality — particularly given Miami-Dade's karst limestone geology and shallow water table — wellfield protection zones, surface water and groundwater concerns, and water and sewer connection capacity through the county's water and sewer utility. RER's broader role is procedural and administrative: it's the front door for permit intake, site plan review, and coordination across the county's technical divisions, of which DERM is one. In practice, an engineer submits through RER, but DERM's technical comments are what actually shape a grading and drainage plan through review cycles.
How does Miami-Dade's high water table affect drainage design?
Miami-Dade sits on porous Biscayne limestone with a seasonal high water table that, in many areas, is only a few feet below grade — closer still near the coast. That geology drives the stormwater management approach: exfiltration trenches and dry retention/detention systems that rely on percolation must be sized against actual seasonal high groundwater elevations, not assumed dry-season conditions. DERM and SFWMD both expect soil borings and percolation data that reflect wet-season groundwater, and a design that works against a fall boring can fail review if the water table rises into the intended storage volume. Coastal and low-lying parcels frequently need to combine on-site storage with a permitted outfall or pump-assisted discharge rather than relying on percolation alone.
What paving, grading, and drainage permits does Miami-Dade require?
Beyond the ERP, a land-development project typically needs a county (or municipal) paving and drainage permit covering on-site grading, roadway and parking paving sections, and the connection of the site's drainage system to a public or permitted outfall. Grading review confirms cut/fill balance, finished floor elevations relative to base flood elevation, and positive drainage away from structures; paving review confirms pavement section design and traffic/utility coordination within the right-of-way. Where a project connects to or crosses county-maintained drainage infrastructure, RER/DERM review of that connection runs alongside — not instead of — the ERP.
| Agency | Permit / Approval | What It Covers |
|---|---|---|
| RER | Site plan / building permit intake | County-level development approval; routes plans across technical divisions |
| DERM (within RER) | Environmental resource review; water/sewer connection | Stormwater quality, wellfield protection, karst/groundwater concerns, utility capacity |
| SFWMD (and/or FDEP) | Environmental Resource Permit (ERP) | Stormwater quantity/quality and wetland/surface-water impacts |
| County/municipal engineering | Paving and drainage permit | On-site grading, pavement sections, drainage connections |
| FDOT (where applicable) | Driveway/access connection permit | Connections to the state highway system |
How do flood risk and the Florida Building Code's HVHZ provisions affect site-civil work?
Much of Miami-Dade lies within FEMA-mapped Special Flood Hazard Areas, and finished floor elevations, minimum flood protection elevations, and overall site grading all have to reconcile against the effective FIRM panels for the parcel — coordinate this early with the local floodplain administrator. Separately, Miami-Dade and Broward sit within the High-Velocity Hurricane Zone (HVHZ) under the Florida Building Code, which imposes additional wind-load and structural provisions. HVHZ is primarily a vertical-construction concern, but it shapes site-level decisions too — building setbacks, utility routing, and drainage structures near building envelopes are often coordinated with the project's structural engineer to avoid conflicts with HVHZ-driven foundation and wall details.
What's the typical sequence for permitting a Miami-Dade land-development project?
Exact timelines vary by project complexity and should always be confirmed against the current review schedules published by each agency, but the general order is consistent: conceptual stormwater management approach and any DERM pre-application coordination first, followed by concurrent submittal of the SFWMD/DERM ERP application and the county or municipal site plan / paving-and-drainage package, then FDOT or municipal access-permit coordination if the site fronts a state or local arterial, and finally building permit issuance once the civil approvals are in hand. Sequencing the ERP submittal early matters because grading, utility, and building permit reviews all depend on the approved stormwater concept.
None of this changes the underlying engineering discipline — cut/fill balance, water quality treatment, and positive drainage are the same fundamentals anywhere in Florida. What changes in Miami-Dade is the number of hands the plan passes through before it's approved, and how unforgiving the karst geology and coastal flood context are of a design that skips the wet-season groundwater check. Building the review sequence into the project schedule from day one is what keeps a Miami-Dade site-civil package moving.