Moving Shoreline

Coastal Erosion Setbacks

Watch the beach disappear over 30 years. See why building setbacks matter and how erosion rates determine where you can safely build in the Florida Keys.

0
Years Projected
0
Feet Eroded
30
Year Minimum
Get Setback Analysis Calculate Setback
2025
CCCL
SAFE
Current Year
2025
Erosion Stats
Total Loss 0 ft
Rate 2 ft/yr
Erosion Rate (ft/year)
2 ft/yr
Planning Tool

Setback Calculator

Calculate the required building setback based on erosion rate and projection period.

2 ft/year
30 years
20 ft
30-Year Erosion 60 ft
Safety Buffer 20 ft
Total Setback Distance 80 ft
MINIMUM SETBACK
80 ft
Erosion Timeline

30-Year Projection at 2 ft/year

2025
0 ft
Starting Point
2035
-20 ft
10 Years
2045
-40 ft
20 Years
2055
-60 ft
30 Years
Common Questions

Coastal Setback FAQs

What is the CCCL and how does it affect building in the Florida Keys?
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The Coastal Construction Control Line (CCCL) is a line established by Florida DEP that defines where stricter building standards apply. Seaward of the CCCL, structures must be designed to withstand storms, wave action, and erosion. Monroe County has specific CCCL regulations for the Keys.
How fast is the beach eroding in the Florida Keys?
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Erosion rates vary by location in Monroe County. Some areas experience 1-3 feet per year of erosion, while others are relatively stable. During major hurricanes, beaches can lose 10-30 feet in a single storm. Engineers use historical data and projections to determine safe setback distances.
What is the 30-year erosion projection for setback calculations?
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Florida requires setback calculations based on 30 years of projected erosion. If a beach erodes at 2 feet per year, the setback must account for 60 feet of shoreline retreat plus additional buffer. This ensures structures remain safe for their expected lifespan.
Can I build seaward of the coastal setback line?
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Building seaward of the CCCL requires special permitting from Florida DEP in addition to local permits. Structures must meet enhanced design standards for wave loads, scour, and erosion. Variances are difficult to obtain and typically require substantial justification.
Coastal Requirements
Min Projection 30 years
CCCL Permit Required
Authority FL DEP

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PE-stamped erosion analysis and setback calculations for your Florida Keys waterfront property.

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