Seawalls in Boca Raton

Height and future raise

Boca Raton's Engineering Design Standards Manual sets the elevation of any new or replaced seawall between 4.0 and 6.0 ft NAVD88, requires the wall to be designed to take another 12 to 18 inches later without alteration, and puts the seawall's wet face on the property line.[3]

Inspection sequence

Location survey approved before the cap pour and before the structural cap and piling inspections; final engineer report on the cap elevation, with photos, after construction. Missing a step stalls the job, so we book surveys into the schedule.[1]

Costs for scale

Fort Lauderdale's 2016 survey, the nearest government price data, found $650 to $2,000 per linear foot for new or replacement walls, and $2,000 to $5,000 for engineering and permits.[2]

What makes Boca Raton different

Plan review needs a current-conditions survey showing the seawall wet face or bulkhead line, the property line and piles, section details with the finished cap elevation, and a proposed site plan. Inspections are staged: a location survey before the cap is poured and before the structural cap and piling inspections, a final engineer report on cap elevation with photos, and a final marine structure survey for docks and lifts.[1]

Agencies beyond the City

Palm Beach County's marine structure checklist for unincorporated areas lists the outside approvals agencies expect to see: FDEP, the Florida Inland Navigation District (FIND) and the Army Corps, as applicable. That checklist is dated 2005, so we confirm current requirements for each job. The federal seagrass range used in dock design covers Palm Beach County waters.[4][5]

Permits for seawalls in Boca Raton

• City of Boca Raton Development Services: Marine structure permits under City Code Chapter 22, with staged survey and engineer inspections.
• Florida Inland Navigation District (FIND): May be involved for work along the Intracoastal Waterway.
• Florida DEP or South Florida Water Management District: State permit or exemption for docks, walls and lifts on Lake Boca Raton and the Intracoastal Waterway.
• US Army Corps of Engineers, Jacksonville District: Federal authorisation along the Intracoastal, which the Palm Beach County checklist expects to see with the building permit.

Which permits does seawall work need?

In Miami-Dade, any work in, on, over or upon tidal waters needs a DERM Class I permit under Section 24-48 of the County Code, including inside cities. Minor repairs are exempt, cap and tieback work gets an expedited authorisation, and rebuilding a wall at the mean high water line or up to 18 inches waterward is a short-form permit approved by staff.

The city building department also issues a structural permit. A state exemption does not remove county and city permits: Florida Statute 403.813 says its exemptions do not relieve anyone from county and municipal requirements, so in Miami-Dade a DERM Class I permit still applies.[7][8]

How long does a seawall last?

Fort Lauderdale's seawall ordinance FAQ assumed a design life of about 50 years, and city engineers described a 30 to 50 year lifespan for a wall built today. Salt water, wave action from boat wakes and rising tides shorten that when cracks and failed joints are left open.[2]

Why heights matter now

Cities are raising the bar. Miami Beach requires new and substantially repaired seawalls to reach 5.7 ft NAVD, Coral Gables sets bulkheads at a minimum of 6 ft NGVD 1929, and Fort Lauderdale requires 5 ft NAVD. A repair that triggers these rules can turn into a raising job, so we check the local standard before we price.[9][11][12]

Frequently asked questions