Environmental Rules in Collier County, FL (2026)
4 rules for unincorporated Collier County, Florida.
Verified from official government sources
Stormwater Management
Collier County regulates stormwater discharges under Code Sec. 54-80.3, reaching industrial, commercial, residential and construction sites that discharge into the county's stormwater system (CCMS4). When a discharge reaches an impaired waterbody or one with an adopted pollution limit, the county can order monitoring and pollutant-load reduction.
Stormwater Discharge Rules in Collier County
Some RestrictionsCollier County Code Sec. 54-80.3
This section applies to all facilities that have Stormwater discharges associated with Industrial, Commercial, Residential, or Construction Activity and will become effective if permit requirements are not being met or reasonable BMPs are not being implemented. If a Private SMS discharges to the CCMS4 that is declared impaired by FDEP or is upstream of an Impaired Waterbody, or the downstream ...
Erosion Control
Any commercial, development or private excavation permitted under Collier County's Excavation Regulations must go up with erosion control already in place. A silt fence is required around every lake edge that borders new construction, and it has to stay up until the adjacent work is inspected and approved by the Engineering Services Department.
Erosion Control Rules for Excavation Sites in Collier County
Some RestrictionsCollier County Code sec. 22-112(11)
Erosion control. Upon completion of any lake construction, a silt fence must be installed around all portions of the lake which are contiguous to proposed new construction. Portions of the silt fence may be removed after the new construction (i.e. residences, roads, drainage) adjacent to that section of silt fence has been approved. Alternate means of erosion control, meeting federal and state ...
Flood Zones
Any development in a Collier County flood hazard area, from subdivisions to swimming pools to manufactured-home placement, needs a floodplain development permit before work starts, under the county's Floodplain Management Ordinance at Code § 62-71 and § 62-74. The County Manager acts as Floodplain Administrator and reviews every application against the current Flood Insurance Rate Maps.
Floodplain Development Permit Rules in Collier County
Significant RestrictionsCollier County Code § 62-71(B)
The provisions of this ordinance shall apply to all development that is wholly within or partially within any flood hazard area, including but not limited to, the subdivision of land; filling, grading, and other site improvements and utility installations; construction, alteration, remodeling, enlargement, improvement, replacement, repair, relocation or demolition of buildings, structures, and ...
Flood Elevation Requirements
Collier County requires most unincorporated homes to sit well above the road, not just above the base flood elevation. Code § 62-80(H) sets a freeboard floor of 18 inches above the crown of a paved street, or 24 inches above an unfinished road, whichever standard applies, unless the Florida Building Code demands even more.
Base Flood Elevation Freeboard Rules in Collier County
Some RestrictionsCollier County Code § 62-80(H)
Lowest floor elevation requirements for residential buildings. The area below the lowest floor shall be limited to storage, access, and parking. All residential buildings not subject to Section 12, H(1) of this ordinance and located in a flood hazard area, Zone X-500, or Zone X shall have the lowest floor elevated at or above the elevation required by the Florida Building Code or as follows, wh...
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