The City of Treasure Island's Terrain Modification Program was approved by the City Commission during its meeting on April 1, after months of review and revisions by both the City's Local Planning Agency and the City Commission. With these updates, the use of fill is now a voluntary option for property owners who wish to elevate their low floors or seawalls. The program will go into effect on May 1, 2025.
The revised ordinances and Terrain Modification Manual feature significant updates to Treasure Island’s Land Development Regulations, providing flexibility for property owners while tackling the challenges posed by sea level rise. Key changes to the program include:
- No new seawalls are required.
- No new retaining walls are required.
- No new docks are required.
- Structural and non-structural fill are allowed.
- No mandate to elevate for the first 10 years of the program.
- Owners are not required to attempt to elevate to the goal height.
- A signed and sealed drainage plan is required.
- The Local Planning Agency (LPA) will re-evaluate the program in two years.
What is Terrain Modification?
Terrain modification involves the strategic use of fill material to raise land for residential, commercial, and public infrastructure projects. Traditionally, fill was not allowed within the city. However, the new approach permits a controlled transition away from the no-fill policy, with guidelines designed to minimize the impact on neighboring properties and to ensure the functionality of the overall site.
By gradually elevating land levels, Treasure Island seeks to reduce the effects of rising sea levels and enhance the resilience of its built environment. The program ensures that terrain modifications align with stormwater management needs, maintaining a proper relationship between private properties, roadways, infrastructure, and local businesses.
CLICK HERE to go to the Terrain Modification webpage.
