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Environmental Rules in Miami-Dade County, FL (2026)

5 county-level rules, plus city-specific rules for 7 cities in Miami-Dade County, Florida.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Miami-Dade County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Stormwater Management

Miami-Dade County requires DERM Director approval and onsite stormwater retention before building driveways, patios, pools or other impervious improvements, with strict numeric retention standards for small residential lots.

Miami-Dade County Stormwater Retention Standards

Significant Restrictions

Miami-Dade County Code § 24-42.8(4)(b)(i)

Stormwater quantity. Lots shall retain, at a minimum, the runoff from a 25-year/10-minute storm event with zero off-site discharge. ... For lots with an area of 5,500 square feet or less: a minimum of 5 feet of pervious area setback on a minimum of 3 sides of the property, with a 6-inch-deep swale along the property perimeter, and a minimum of 20 percent of pervious lot area; or...

Erosion Control

Miami-Dade County requires erosion and sedimentation controls for construction near rights-of-way or water bodies, spelled out in a Stormwater Pollution Prevention Plan that DERM must review and approve.

Erosion and Sedimentation Controls in Miami-Dade

Some Restrictions

Miami-Dade County Code § 24-42.8(4)(f)

Construction activities involving earth work or excavations along public rights-of-way or adjacent to water bodies shall provide erosion and sedimentation controls to limit impacts to existing drainage facilities, water bodies, and natural preserve areas. The controls shall be included in the Stormwater Pollution Prevention Plan (SWPPP) to be submitted as part of a permit application and shall ...

Flood Zones

New homes and substantially improved residential structures in unincorporated Miami-Dade's Special Flood Hazard Areas must have their lowest floor elevated to or above the base flood elevation plus freeboard before the County issues a building permit.

Miami-Dade Flood Zone Elevation Rules

Some Restrictions

Miami-Dade County Code § 11C-5(b)(1)

No new construction or substantial improvement of any residential structure shall be permitted in an SFHA, and no building permit shall be issued therefor, unless said new construction, reconstruction, or substantial improvement complies with the following: (1) The structure's lowest floor (including basement) and any attached garages or enclosures and detached accessory buildings shall be elev...

Boat Dock Permits

Miami-Dade County requires a DERM environmental permit before building any dock, davit, boat lift, mooring or fender pile in tidal waters, with a streamlined short-form process for single-family homes.

Miami-Dade County Boat Dock Permits

Some Restrictions

Miami-Dade County Code § 24-48.2(I)(A)(2)

A short form permit application may be accepted by the Department for the following types of work: ... (2) Construction or the placement of a single-family residence fixed or floating dock, davit, boat lift, mooring or fender pile, all of which are associated with a single family residence provided that none of the foregoing protrude into the water more than twenty-five (25) percent of the widt...

Flood Elevation Requirements

New construction and substantially improved homes in Miami-Dade's Special Flood Hazard Areas must have their lowest floor elevated to or above the base flood elevation plus a mandatory freeboard margin before a building permit issues.

Miami-Dade County Base Flood Elevation Freeboard Rule

Some Restrictions

Miami-Dade County Code § 11C-5(b)(1)

(b)Residential structures. No new construction or substantial improvement of any residential structure shall be permitted in an SFHA, and no building permit shall be issued therefor, unless said new construction, reconstruction, or substantial improvement complies with the following: (1) The structure's lowest floor (including basement) and any attached garages or enclosures and detached access...

Environmental Rules by City in Miami-Dade County

7 cities in Miami-Dade County have their own environmental rules rules. Each link goes to that city's dedicated page with code citations.

All Miami-Dade County ordinances

See every category we cover for Miami-Dade County: parking, noise, fences, fires, animals, pools, and more.

Miami-Dade County Ordinance Hub →