By Carrie Liotta, REALTOR® | Boardwalk Realty | May 16, 2026
Seawalls in Brevard County: If you’re researching waterfront property in Brevard County, here’s the short answer on seawalls: they are one of the most expensive and most overlooked issues in Space Coast real estate right now — and the county is actively moving away from them.
A failing seawall can cost $60,000 to $120,000 to replace. It can look perfectly fine from the surface while silently failing underneath. And unpermitted seawall work can kill your closing.
I put together this video to walk you through exactly what’s happening with seawalls on the Space Coast, what you should do before making an offer on a waterfront home, and why the alternatives to traditional seawalls are worth understanding before you sign anything.
Seawalls in Brevard County: Why Seawalls Are a Bigger Deal Here Than in Most Florida Markets
Brevard County sits along the Indian River Lagoon — 156 miles of estuary running through the heart of the Space Coast. It’s one of the most biologically diverse estuaries in North America: manatees, dolphins, seagrass, and thousands of species. The lagoon is also why people want to live here. Waterfront homes in this county command a real premium, and the Indian River, Banana River, and the canals throughout Merritt Island and Cocoa Beach are central to that value.
But the lagoon is struggling. Decades of pollution, nutrient runoff, and ecological stress have taken a toll — and here’s what surprises most buyers: traditional seawalls are part of that problem.
A vertical seawall doesn’t absorb wave energy. It reflects it. That reflected energy increases erosion at the base of the wall and on neighboring properties. Seawalls also block the natural movement of sand and sediment, and they eliminate the intertidal zone — the narrow strip of shoreline between high and low tide where mangroves grow, horseshoe crabs nest, and oysters filter the water. A vertical concrete wall wipes all of that out.
Brevard County’s own natural resources director has said publicly that seawalls are the easy way to stabilize a shoreline, but they are not good for wildlife, not good for water clarity, and not good for the lagoon. That’s not a fringe position — it’s the county’s official stance, and it’s backed by real dollars. In 2024, Brevard kicked off a $4.2 million living shoreline project at Titusville Causeway, bringing in over 4,000 cubic yards of sand, native vegetation, and 650 wave attenuation devices offshore that function like an artificial reef. They even dropped a million baby clams via drone to help filter the water.
That’s the direction this county is heading. As a buyer, you need to understand that shift — because it affects what you can build, what your alternatives are, and what the long-term value of a waterfront property looks like. If you’re weighing the true costs of Merritt Island waterfront ownership, seawalls belong near the top of that list.
Piece of Advice #1: Get a Seawall Inspection Before You Make an Offer
This is non-negotiable, and I say that as someone who has seen what happens when buyers skip it.
A seawall can look perfectly fine from the surface. No cracks. The cap looks solid. The wall is standing straight. And underneath, the tieback rods anchoring the entire structure are completely rusted through. The fill behind the wall is washing out. You could be weeks away from a failure — and you would never know it just by looking.
Your standard home inspector does not cover this. You need a licensed marine contractor who specifically knows marine construction to assess the actual structural integrity of the wall. This is a separate, specialized inspection — and it is worth every penny.
Here’s what you’re protecting yourself from: seawall replacement runs $700 to $1,200 per linear foot, and sometimes more depending on materials and access. A typical 80 to 100-foot residential seawall can cost between $60,000 and $100,000 to replace. That is not a number you want to discover after closing.
Practical advice: Make the seawall inspection a condition of your offer. Use what you find to negotiate. And if the seller can’t tell you when the seawall was last inspected or repaired, treat that as a red flag — not a minor gap. For a deeper look at what a proper inspection involves, see this seawall inspection guide for Brevard County.
Piece of Advice #2: Know Your Alternatives — the County Already Does
If you own waterfront property and your seawall is aging — or if you’re buying a property where the seawall is near end of life — you do not automatically have to replace it with another vertical concrete or vinyl wall. The county actually prefers you don’t.
Here are the main alternatives:
Rip rap — a sloped arrangement of rocks along the shoreline. More wildlife-friendly than a vertical wall, considered a middle-ground option that Brevard County views much more favorably from an environmental standpoint. Depending on your shoreline conditions, rip rap can also be less expensive than a full seawall replacement.
Living shorelines — the full nature-based approach. Native plants, oyster beds, wave attenuation structures. These have more ecological benefit and are often less expensive upfront than a new seawall. They’re also potentially eligible for funding through the Save Our Indian River Lagoon program — a half-cent sales tax that Brevard voters approved in 2016, expected to generate over $586 million for lagoon restoration projects. That’s real grant money that may be available to help offset your costs.
Even if your property ultimately requires a vinyl seawall because of its specific water exposure or lot configuration, you should at least have that conversation with a marine contractor before assuming it’s your only option. A good contractor will tell you honestly what makes sense for your property, your water exposure, and your budget.
For more context on how seawall condition and replacement decisions affect resale value, this post on whether a new seawall adds value to your Merritt Island home is worth reading before you negotiate.
Piece of Advice #3: Always Pull the Permit. No Exceptions.
I’ve seen deals fall apart — or get seriously complicated — because a previous owner did seawall work without a permit. This matters for buyers, not just sellers.
In Brevard County, seawall installation and replacement requires a residential marine construction permitfrom the county. Depending on the scope of the project, you may also need an environmental resource permit from the Florida Department of Environmental Protection, and in some cases, involvement from the US Army Corps of Engineers. There are also setback rules: Brevard County Code prohibits construction within 10 feet of any seawall or bulkhead. Violate that and you’ve got a zoning issue sitting on the property.
Some restoration work is exempt from DEP permitting — specifically, if you’re repairing a functional wall, rebuilding it in the same footprint, and you’re not in an aquatic preserve or manatee sanctuary. But even in that scenario, you still need your local county permit. The county-level permit is never optional.
If you’re buying a home where seawall work has been done and you ask to see the permit and the seller can’t produce one — that’s a problem you need to address before you close, not after. Unpermitted work is a liability that transfers with the property. And if a contractor tells you the work doesn’t need a permit, get a second opinion before you let them touch anything.
If you want to understand what to look for across the full due diligence process on a waterfront purchase, this guide on what to do before buying waterfront on Merritt Island covers the broader checklist.
What This Means for Waterfront Buyers Right Now
Brevard County is in the middle of a real shift — away from traditional vertical seawalls and toward more ecological shoreline management. That shift is being driven by a stressed Indian River Lagoon, county policy, and real money behind living shoreline projects. It’s not a future concern. It’s happening now, and it’s already affecting what you can build on waterfront properties throughout the county.
For buyers, this means three things:
First, seawall condition is a BOFU issue — a bottom-of-funnel, deal-or-no-deal question that belongs in your due diligence checklist alongside flood zone, insurance costs, and HOA rules. Don’t leave it until after the inspection contingency has expired.
Second, the alternatives to traditional seawalls are real, viable, and in some cases cheaper and county-preferred. You don’t have to default to “replace with the same thing.” Ask the question.
Third, the permit history of any seawall work done by previous owners is your business as a buyer. Ask for it. Confirm it with the county if you need to. Permitted work protects your investment. Unpermitted work is a liability — and it’s one that follows the property, not the seller.
If you want to dig into the full picture of what owning waterfront in this county actually costs and involves, this breakdown of waterfront ownership costs on Merritt Island is a good place to start.
Have questions about waterfront property on the Space Coast?
I work with buyers every day who are relocating to Brevard County from out of state and navigating exactly these kinds of issues — seawalls, flood zones, inspections, insurance. Let’s talk through your situation before you make an offer.
📞 256-479-2800 | 📧 carrieliotta@gmail.com
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Or join my private Facebook group — Moving to Brevard County, Florida — for ongoing market updates, Q&As, and conversations with people who’ve made this move.
Carrie Liotta is a REALTOR® with Boardwalk Realty, serving Merritt Island, Cocoa Beach, Satellite Beach, Viera, and surrounding Brevard County communities. She specializes in waterfront and relocation buyers on Florida’s Space Coast.
