Respect the Coastline

Think of it like this: the closer you build to the ocean, the harder the wind hits your building. A coastal setback is the distance from the water that determines which set of rules you follow. In Palm Beach County, buildings within 1500 feet of the coast need to meet stricter requirements because there is nothing blocking the wind coming off the ocean.

Exposure categories go from B to D. Exposure D is for buildings right on the water with nothing blocking the wind. Exposure C is for open areas like suburbs. Exposure B is for areas with lots of trees and buildings that slow down the wind. In Palm Beach County, if you are within about 600 feet of the coast, you probably need Exposure D. Our calculator figures this out automatically based on your address.

Using the wrong category means your building might not be strong enough for the actual wind it will face. The permit office will reject your plans, costing you time and money. Worse, if it gets built with the wrong design, your building could fail in a hurricane. Always calculate from the actual shoreline distance, not a guess.

Yes! The Intracoastal Waterway counts as open water for exposure calculations. If your building faces the Intracoastal with nothing blocking the wind across the water, you need to use the appropriate coastal exposure category. This catches a lot of contractors by surprise, especially in Palm Beach County where many properties back up to the Intracoastal.

A Professional Engineer cannot make the wind blow less hard, but they can analyze your specific site conditions. Sometimes there are legitimate reasons for a different exposure category, like if there are permanent structures or terrain features that provide shielding. However, in Palm Beach County coastal areas, the building department is very strict. Getting proper engineering documentation helps you avoid delays and arguments at permit review.