Understanding Site Work Permits in Monroe County
This comprehensive guide walks you through the permit process for site work in Monroe County. Understanding what permits you need, how to apply, and what to expect helps ensure your project proceeds without delays. Whether you're working in Key West, Key Largo, Islamorada, Marathon, or throughout the county, this guide provides the information you need.
Working without proper permits can result in stop-work orders, fines, and project delays. In Monroe County, environmental violations can result in significant fines and project shutdowns. Taking time to understand and obtain all required permits upfront saves time and money in the long run.
Overview of Site Work Permits Required in Monroe County

Most site work projects in Monroe County require multiple permits from different agencies. Here's an overview of the main permit categories:
- Building Department Permits: Required for most site work activities including grading, excavation, and drainage
- Environmental Permits: Required for projects affecting water resources, wetlands, protected species, or environmental features (strictest in Florida)
- Tree Removal Permits: Required before removing trees or vegetation (heavily restricted)
- Protected Species Permits: Required for projects affecting Key deer, sea turtles, marine life, or their habitat
- Coral Reef Protection: Projects must not affect nearby coral reefs
- Flood Zone Permits: Special requirements for properties in flood zones (most Monroe County properties are in Zone AE or VE)
The specific permits required depend on your project type, location, and scope of work. Monroe County has the strictest environmental regulations in Florida, making permit compliance especially critical.
Monroe County Building Department Permits

Building Department Permit Requirements
The Monroe County Building Department requires permits for:
- Site grading and earthwork
- Excavation for foundations and utilities (coral rock excavation adds complexity)
- Drainage system installation
- Utility installation and connections
- Erosion control measures
- Retention and detention pond construction
Required Documents for Building Permits
Building permit applications must include:
- Site plans showing existing and proposed conditions
- Engineering drawings with calculations
- Stormwater management plans (must comply with Monroe County and SFWMD, with coral reef protection)
- Erosion control plans (must protect marine environments)
- Property surveys
- Flood zone determination (check FEMA flood maps)
- Protected species surveys (if required)
- Utility coordination letters
Incomplete applications are typically rejected, causing delays. Ensure all required documents and fees are included.
