Seawall replacement in Jupiter

When replacement makes sense

Replacement is the answer when panels are cracked through, the wall leans, repairs would cost more than half of a new wall, or the wall is too low for your city's new standard.

• Panels cracked through or leaning
• Repeated sinkholes despite repairs
• A city notice to raise or rebuild
• Planned dock or lift work that needs a sound wall

A cap no higher than base flood elevation

Jupiter caps seawalls from above: the top of the concrete cap, in NAVD, must be at or below the property's base flood elevation (Code 27-2624(8)). Since FEMA's new maps took effect on 20 December 2024, the BFE on the current map is the number to check before a cap is designed.

A replacement wall is built to the current height from the start, so the panels, piles and cap are sized for it.[1][2]

A survey less than six months old

Jupiter dock permits need a signed and sealed survey made within 6 months of the application, showing setbacks, the mean high water line in NAVD88 and the waterway width (Code 27-2626). An older survey from the house purchase usually has to be redone.

A full replacement needs the complete permit set, so we start on drawings and surveys early.[3]

An 18 inch allowance, once

A replacement bulkhead in Jupiter may go up to 18 in waterward of the existing one, or landward of mean high water, and the Town treats that as a one-time-only allowance (Code 27-2624). The permit survey must show the mean high water line in NAVD88 plus existing and proposed riprap and mangroves.

Knowing where that line sits lets you choose between a repair now and a full raise later with your eyes open.[1]

Two aquatic preserves meet at Jupiter

The Loxahatchee River-Lake Worth Creek Aquatic Preserve (1,800 acres, 1970) borders Jupiter and Tequesta, and the Jensen Beach to Jupiter Inlet Aquatic Preserve (23,000 acres) has been Outstanding Florida Waters since 1979. On those waters the state dock exemption falls to 500 sq ft, and SFWMD approval is needed for structures in natural waterways.

New walls often get riprap at the toe in the same mobilisation, which saves a second trip.[4][5][6][1]

What makes Jupiter different

Town Code 27-2626 keeps half of every waterway clear: a centreline channel of 50% of the waterway width must stay unobstructed, or at least a 15 ft channel where that cannot be met. Only rectangular, T and L shaped docks are allowed unless the Planning and Zoning Director approves another shape.[7]

Who approves what

The Town's checklists ask for FDEP self-certification or exemption verification, Army Corps approval if not included in the DEP decision, and SFWMD approval for structures on submerged lands or in natural waterways such as the Loxahatchee River, the Intracoastal Waterway and Sawfish Bay.[1][3]

Permits in Jupiter

• Town of Jupiter Building and Planning and Zoning: Marine structure permits; dock waivers under Town Code 27-2626.
• Florida DEP or South Florida Water Management District: FDEP self-certification or exemption verification for canal docks; SFWMD approval for structures in the Loxahatchee River, the Intracoastal and Sawfish Bay.
• US Army Corps of Engineers, Jacksonville District: Army Corps approval where the FDEP decision does not include it, as the Town checklists note.

What a seawall replacement involves

A Florida engineer designs the wall to the site's soil, water depth and the local top elevation. Most replacements go in front of the old wall, which stays in place as backing, because removing it can undermine the yard.

1. Survey and engineered drawings
2. DERM, city and state approvals
3. Turbidity barrier and manatee watch in the water
4. New panels or sheet piles, tiebacks and cap
5. Backfill, drainage and yard restoration

How far out can the new wall go?

Florida Statute 403.813 exempts restoring a seawall at its previous location, upland of it, or within 18 inches waterward of it. Miami-Dade's short form and the federal SPGP VI use the same 18 inch line, measured wet face to wet face, and need no seagrass survey within it.[6][10][11]

Federal permits

Under SPGP VI, the Florida DEP could verify the federal Army Corps authorisation for qualifying seawall work along with the state decision. That permit's stated expiration date was 27 July 2026, and we have not been able to confirm a replacement, so for each job we confirm the federal route with the agencies before we file.[11][12]

Working around manatees

Permits attach the state's Standard Manatee Conditions: all in-water work stops if a manatee comes within 50 ft, and resumes only once it has moved beyond 50 ft or 30 minutes pass without it reappearing. Turbidity barriers must not entangle or block manatees.[13]

Frequently asked questions