Free visual inspection and a written scope of work before any mitigation begins - photos, moisture readings, and drying logs go in your claim file
The scope we write is the scope we bill. Anything new gets shown to you, in writing, before we touch it.
Fast, Reliable Water Damage Restoration Across Key Biscayne
Key Biscayne Storm Damage Restoration is urgent: water damage moves fast, and so do we. Most residential water extractions on the island run between $1,200 and $4,800 before drying equipment is set, with structural drying adding $900 to $2,500 depending on square footage and how long the water sat. A live person answers our phone 24/7 at (910) 613-6568, and our crews reach Key Biscayne homes quickly because we plan around the reality that this island has exactly one way on and one way off: the Rickenbacker Causeway. When that road closes after a storm, every minute of delay becomes moisture moving deeper into drywall, slab, and custom millwork. We know what that means here, and we show up ready.
If you’re standing in water right now, shut off the power to that area if you can do it safely, and call us. We’ll walk you through what to do in the next ten minutes while a crew heads your way. Our Water Damage Restoration team is led by Tobias Reyner, and every technician who arrives is background-checked, identity-verified, and sent to you by name and photo before the knock. That’s the Threshold Standard, and it applies to every single visit on Key Biscayne.
Why Marsh Water Damage Restoration Is Key Biscayne’s Preferred Water Damage Restoration Company
Marsh has been in business since 2005 as part of the Threshold Group family of restoration companies, and the name isn’t an accident. A marsh is low, wet ground. Water where it shouldn’t be. That’s what we deal with every day, and on Key Biscayne, the stakes are higher than almost anywhere else in Miami-Dade. This island sits 3 to 6 feet above sea level with Biscayne Bay on one side and the Atlantic on the other. When water gets into a building here, it’s rarely clean, rarely isolated, and rarely forgiving.
Our Water Damage Restoration in Key Biscayne work has taught us the island’s two distinct building generations: the 1960s to 1980s high-rise condos with post-tension concrete slabs that hide water intrusion at balcony connections, and the single-family homes rebuilt to stricter post-Andrew codes after 1992. A mainland crew that dries both the same way will miss what matters. Our technicians hold IICRC, RIA, and IFA credentials and run equipment from Dri-Eaz, Phoenix, XPOWER, B-Air, and Injectidry. That’s the same gear used on large commercial losses, applied to a two-bedroom condo off Crandon Boulevard or a bayfront house near Harbor Drive.
Every job gets a written price before any work starts. Every repair carries a written guarantee, backed by our 365-Day Done Right Promise: if the repair is not right within a full year, Marsh makes it right, and a second visit is free automatically. Not something you argue for.
Flood Damage Restoration in Key Biscayne
Flood Damage Restoration on Key Biscayne means dealing with water that came from outside your home, and on a barrier island with dual storm-surge exposure, that water is almost always Category 3: carrying salt, sewage, debris, and whatever Biscayne Bay pushed through your doors. A typical flood damage restoration on the island runs $3,500 to $12,000, with larger high-rise common areas and ground-floor units at the higher end. This is not a cleaning job. It’s extraction, demolition of saturated materials, antimicrobial treatment, structural drying, and reconstruction of what had to come out.
Post-Storm Access and Pre-Staging
Here’s what most people don’t plan for: when the Rickenbacker Causeway closes, it closes for everyone. After Hurricane Andrew and several named storms since, Miami-Dade authorities locked the causeway for up to 96 hours. That’s four days of Category 3 water sitting in your unit with no one able to reach you. The buildings that recover fastest are the ones whose HOAs already have a restoration crew credentialed and pre-authorized on the Village’s post-storm access list. Marsh can set that up before hurricane season, and our pre-storm service agreements include pre-staging equipment at the island-side warehouse so we’re not fighting mainland traffic when the road reopens.
What We Remove and What We Save
Floodwater in Key Biscayne ruins drywall, baseboards, carpet, and anything porous. But it also attacks what’s behind those surfaces: the steel fasteners in a post-tension slab, the electrical components in a ground-floor utility room, the HVAC coils in a 1970s oceanfront tower. Salt-laden air and salt-laden floodwater accelerate corrosion dramatically on this island. Our scope-of-work documentation reflects that. We photograph everything, log moisture readings daily, and hand you and your adjuster a written record that supports the full claim. We coordinate directly with insurance adjusters so you don’t have to translate restoration science into claim language.
Water Damage Cleanup in Key Biscayne
Water Damage Cleanup on Key Biscayne handles the water that came from inside: a burst pipe, a failed water heater, an overflowing tub in a 12th-floor condo soaking the unit below. Most residential water extractions run between $1,200 and $4,800 before drying equipment is set, and cleanup-only jobs on the island typically land between $900 and $3,000 depending on how far the water traveled. The water itself may be clean at the source, but give it 48 hours in a closed-up, un-air-conditioned high-rise and mold becomes the real problem. Speed matters more than anything else on this island.
Hidden Water in Post-Tension Slabs
One thing we see constantly in Key Biscayne’s older condominium towers: water that enters at a balcony connection and travels inside the post-tension concrete slab. The carpet looks dry. The walls feel dry. But moisture is trapped in the slab, corroding the steel cables that hold the building together. We use moisture mapping and psychrometric readings (measuring the moisture in the air and in materials) to find what surface checks miss. This is exactly the kind of hidden water intrusion that resurfaces weeks later as a much bigger claim. We find it on the first visit.
Custom Finishes and Matching Materials
Key Biscayne homes are not off-the-shelf. Carriage-house doors, custom millwork, imported tile, marine-grade cabinetry: when these get wet, the homeowner’s first question is always “can you save it, and if not, can you match it?” We pack out what can be restored, dry it off-site with professional-grade equipment, and match the original finish when replacement is necessary. On a recent Harbor Drive job after a close-passing hurricane pushed bay water into a bayside condo tower, we ran structural drying across three floors, logged daily moisture readings, and matched the original finish on every water-damaged carriage-house door and custom millwork we pack-out’d. The building returned to pre-loss condition without a single material substitution.
Trusted Brands We Service in Key Biscayne
Water damage doesn’t care what brand your water heater is, and neither do we when it comes to extraction and drying. That said, we routinely service and coordinate repairs around the systems most common in Key Biscayne homes: Rheem and Bradford White water heaters, Moen and Kohler fixtures, and the high-end appliance suites found in Ocean Club and Grand Bay residences. Because the island is small and supplier runs across the causeway eat time, we stock the drying equipment and replacement parts we’re most likely to need right here in the service area. Phoenix and XPOWER air movers, B-Air dehumidifiers, Injectidry panel drying systems: staged locally, ready when you call.
Common Water Damage Restoration Problems We See in Key Biscayne Homes
- Rickenbacker Causeway lockout delays. A standard mainland response timeline doesn’t exist on Key Biscayne. When the causeway closes for 96 hours, water and mold advance unchecked in closed-up units. Pre-storm agreements change everything.
- Hidden slab intrusion at balcony connections. In the 1960s to 1980s post-tension towers, water enters at balconies and travels inside the concrete. Surface drying leaves it behind. Moisture mapping is non-negotiable here.
- Salt-air corrosion expanding claim scope. Fasteners, HVAC coils, and electrical components on this island corrode faster than inland properties. Undercounting that in the scope of work leaves the HOA and the homeowner exposed when the claim comes up short.
- Two generations of construction side by side. Post-Andrew single-family homes are built to stricter codes than the older towers. A drying protocol that works for one will not work for the other. Restoration on Key Biscayne requires knowing which generation you’re standing in.
Pricing for Water Damage Restoration in Key Biscayne, FL
Here are honest numbers for the Key Biscayne market. Emergency water extraction runs $1,200 to $4,800 for most residential jobs. Structural drying and dehumidification adds $900 to $2,500. Flood cleanup after a storm larger than a single-pipe failure: $3,500 to $12,000. Burst pipe restoration with drywall and flooring replacement: $4,000 to $9,500. Ceiling and roof leak water damage: $1,800 to $5,000. Basement water removal: $1,500 to $4,200. What moves the number: square footage affected, how long the water sat, whether it’s Category 1 or Category 3, and whether custom finishes require matching. You get a written price before any work starts. You get a written guarantee. You get a free estimate. Call (910) 613-6568 and we’ll send someone who can tell you exactly what it will cost.
We Also Serve Cities Near Key Biscayne
Our crews cover the full barrier island and the surrounding mainland. In addition to Key Biscayne, we handle water damage restoration calls in Miami Beach, Miami, Coral Gables, and Hialeah. If you’re calling from across the causeway, the same Threshold Verified technicians, written pricing, and 365-Day Done Right Promise apply.
Serving Key Biscayne, FL - Our Local Coverage Area
We’re based in the Key Biscayne area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Water Damage Restoration in Key Biscayne
You can, but the risk is a crew sitting on the mainland side of the Rickenbacker Causeway while it’s closed for up to 96 hours. Most companies don’t hold a place on the Village’s post-storm access list, and most don’t pre-stage equipment on the island before a storm. We offer pre-storm service agreements that include exactly that: a credentialed crew on the access list and Dri-Eaz and XPOWER equipment already staged at the island-side warehouse. That’s the difference between extract-when-the-road-opens and extract-the-hour-the-road-opens. Call (910) 613-6568 to set one up before the next named storm.
In a closed-up, un-air-conditioned high-rise unit, mold can reach actionable levels within 48 to 72 hours of water intrusion. That clock starts the moment the water enters, not the moment you discover it. Condo associations on the island have learned this the hard way. The answer is rapid extraction, aggressive dehumidification, and antimicrobial treatment before mold colonies establish. We hit those in the first visit, not on a follow-up.
The tower is built on a post-tension concrete slab with hidden water paths at balcony connections; the post-Andrew house is built to stricter codes with different assemblies entirely. In the tower, we prioritize moisture mapping across the slab and tracing intrusion at balconies. In the rebuilt home, we’re typically dealing with more conventional framing and drywall, but with custom finishes that require careful pack-out and matching. Same island, two very different buildings, two different drying plans.
Salt-laden air and salt-laden floodwater accelerate corrosion of structural fasteners, HVAC coils, and electrical components well beyond what inland Miami-Dade properties see. A scope of work that only counts drywall and flooring will undercount the true damage. Our documentation photographs and logs every affected system so your claim reflects what’s actually corroding, not just what’s visibly wet.
Sign a pre-storm service agreement with a restoration contractor that is credentialed and pre-authorized on the Village’s post-storm access list. Confirm that contractor pre-stages extraction and drying equipment on the island side of the causeway. And have a written scope protocol for common areas, elevator shafts, and ground-floor units. Buildings that do this recover in days. Buildings that don’t wait out the causeway closure and then wait again for a mainland crew that has 50 other calls ahead of theirs. Call (910) 613-6568 and we’ll walk your board through it.
Written by Tobias Reyner, Owner at Marsh Water Damage Restoration, serving Key Biscayne since 2005.






Before
After
Before
After
Before
After