Water damage drying
Fire & smoke cleanup
Mold remediation
Storm response
Sewage cleanup
ReconstructionFree 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.
Get your free estimateFast, Reliable Mold Remediation Across Hicksville
Mold remediation in Hicksville typically costs $1,800 – $4,200 for a finished basement and can often begin within 24 to 48 hours of your call. Rick Sumner and our team at Tidemark Water Damage Hempstead know this town’s older Cape Cods and split-levels, which is why we move quickly when a sump pump fails or a cast-iron drain line cracks under the slab. You’ll get a written price before any work starts. Call (516) 559-4877 and a real person answers, day or night.

Why Tidemark Water Damage Hempstead Is Hicksville’s Preferred Mold Remediation Company
Hicksville homeowners deal with a set of problems most national franchises don’t understand until they’re standing in your basement. The clay-rich glacial outwash soils under the Hempstead Plains hold water near the surface, so groundwater seeps through hairline cracks in 1950s basement slabs and feeds mold behind finished walls long before anyone smells it. Our crews have pulled drywall near Cantiague Park, around Levittown Parkway, and off Newbridge Road enough times to know exactly where to look first.
We don’t rush you. Rick insists every job begin with an explanation of what we found, what we’ll protect, and what it costs, in writing, before we touch anything. Shoe covers go on at the door. Drop cloths cover the floor before the first piece of equipment comes in. Our technicians are background-checked, uniformed, and credentialed through IICRC, RIA, and IFA, and they bring Dri-Eaz and Phoenix drying equipment matched to the square footage of your lower level.
Every mold job in Hicksville is backed by our Mold Remediation team’s 365-Day Done Right Promise. If it isn’t done right, we make it right. That’s the standard the Cedarwell Care Promise network was built on in 2006, and it’s the same promise you get here.
Restoration work we handle






Mold Remediation Services in Hicksville
Mold Remediation Services in Hicksville start with finding the moisture source, not just killing the mold you can see. A finished basement off South Oyster Bay Road often hides mold behind paneling and baseboards for weeks after a Category 1 groundwater intrusion, because nobody mapped the slab for moisture. We do that mapping before we quote anything.
Most Hicksville jobs run $1,800 – $4,200 depending on how far the mold has traveled behind the walls and whether the original perimeter drain has failed. You see the written number before we start.
Containment and Source Removal
We set up containment barriers so spores don’t move into the upstairs living space while we work. Then we remove affected drywall, insulation, and tack strips back to dry material, and treat the framing and slab with an antimicrobial. In many Hicksville split-levels, that means opening the wall cavity behind the finished basement stairwell, a spot most homeowners never inspect.

Moisture Mapping and Drying
We log moisture readings daily until the slab and framing test dry. A tide mark is the line water leaves on a wall, and it’s the first thing our technicians look for. That line tells us where the water truly traveled, which is almost always farther than the visible staining suggests.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Professional Mold Removal in Hicksville
Professional Mold Removal in Hicksville is not a bleach-and-paint job. Bleach kills surface mold on 1940s concrete but does nothing for the high water table that keeps re-wetting the sill plates and floor joists in your Cape Cod lower level. Rick’s crews find the water first, then remove the mold, then dry past the tide mark.
For a typical finished basement in Hicksville, professional mold removal runs $2,200 – $4,200 when the job includes disinfection, drying, and replacing the removed drywall. The work usually takes three to five days on-site, with drying equipment running continuously until moisture readings stabilize.
Black Mold and Air Quality Restoration
When we encounter black mold, which is common near failed drain chases under slabs, we treat the affected area with an antimicrobial and run air scrubbers during and after removal. We also check the air quality before we clear the space for your family. If you have kids or pets, we use lower-decibel settings on our XPOWER air movers during nap time and school hours.

Crawl Space Treatment for Cape Cods
Many Hicksville Cape Cods have crawl spaces that connect to the finished basement through open chases around cast-iron drain lines. We treat those crawl spaces as part of the job, because mold spores travel through the same paths the moisture does. Ignore the crawl space and the mold in your finished basement returns within a season.
Trusted Brands We Service in Hicksville
Our crews work with Dri-Eaz and Phoenix drying equipment on every Hicksville job, and our technicians hold IICRC, RIA, and IFA credentials. That combination matters when you’re drying a slab on a high water table. We also keep common replacement materials on our trucks, so a split-level near Cantiague Park doesn’t wait two days for the right antimicrobial or air scrubber filter to arrive.
Common Mold Remediation Problems We See in Hicksville Homes
- Finished-basement mold hidden behind paneling. Hicksville homeowners often discover staining only when they move a couch or pull up a baseboard. The moisture has been there for weeks, usually from groundwater wicking through the slab after a nor’easter.
- Recurring mold in Cape Cod lower levels. When the original perimeter drain fails and the cast-iron lines under the slab weep sewage-scented moisture, mold returns even after a thorough cleaning. The drain has to be addressed or the mold will be back before the next heavy rain.
- DIY bleach treatments on 1940s concrete. Bleach kills surface spores but the sill plates and floor joists stay wet because the water table keeps feeding them. We see this weekly, and we usually have to remove drywall the homeowner thought was saved.
- Sewage backups that become mold problems. Cracked cast-iron drain lines under the slab cause sewage to seep into the surrounding fill. That moisture migrates under finished flooring and into wall cavities, creating a Category 3 situation that requires professional containment and removal.
See the difference
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After
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AfterPricing for Mold Remediation in Hicksville, NY
Mold remediation in Hicksville typically runs between $1,800 and $4,200 for a finished basement. Smaller jobs, like a single wall cavity or a crawl space treatment, can start around $900. Larger jobs that involve multiple rooms, sewage contact, or replacing cast-iron drain sections can reach $7,000 or more, and we’ll show you the written breakdown before you approve anything.
What moves the number is how far the moisture traveled behind the walls, whether the drain line itself needs repair, and how much drywall and insulation has to come out. At Mold Remediation in Hicksville, we want you to understand the price before the first tool comes off the truck. Call (516) 559-4877 for a free estimate. Rick or one of our team members will walk you through it.
We Also Serve Cities Near Hicksville
Our crews work in Levittown, Westbury, Woodbury, and Farmingdale as well, so if you’re just over the Hicksville line near the Wantagh Parkway or north of the Northern State, we can usually reach you the same day. The same written-price-first standard applies everywhere we work.
Serving Hicksville, NY - Our Local Coverage Area
We’re based in the Hicksville 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 Mold Remediation in Hicksville
Mold returns in Hicksville basements because the moisture source is still active. On a high water table with clay-rich soils, groundwater enters through slab cracks and failed perimeter drains, and cleaning the visible mold doesn’t stop that. Our crew was called to a split-level near Cantiague Park after a homeowner found black staining on the back of drywall behind a basement couch. The source was groundwater wicking through the original cast-iron drain chase, the same 1950s line that had already caused a sewage backup the year before. We set containment, pulled the affected drywall and tack strips, ran our Phoenix dehumidifiers and XPOWER air movers for five days, and logged moisture readings daily until the slab and framing tested dry, then applied an antimicrobial treatment before rebuild. Call (516) 559-4877 if you’ve cleaned mold more than once and it keeps returning.
Very likely yes. Original cast-iron drain lines from the 1950s corrode from the inside and crack, letting sewage-scented moisture seep under your slab and into wall cavities. That moisture migrates for weeks before you notice staining, and by then mold is already established behind the drywall. We inspect the drain chase and map the moisture before recommending a fix.
Mold can begin growing within 24 to 48 hours on wet drywall and carpet in a Cape Cod basement. The faster you call, the more of the finished space we can dry in place instead of tearing out. We answer the phone live around the clock, and our crews can be in Hicksville the same day. Call (516) 559-4877 as soon as you notice standing water.
If sewage has entered the space, yes. Category 3 water means the material is grossly contaminated and requires full containment, removal of affected porous materials, and antimicrobial treatment. Homes near Cantiague Park with original cast-iron drain lines are exactly the places where this happens, and cutting corners on Category 3 work puts your family’s health at risk.
Sometimes, yes. If the water came from a clean source like a sump pump failure and we arrive quickly, we can often dry the space in place using injection drying systems and dehumidifiers without removing finished walls. The earlier we map the moisture and start drying, the more likely you keep your walls. Call (516) 559-4877 and we’ll tell you honestly what can be saved.
Contact Tidemark Water Damage Hempstead in Hicksville
If you have mold, moisture, or a recurring musty smell in your Hicksville basement, call us. We’ll explain what’s happening, what we’ll protect, and what it costs, all before any work begins. Shoe covers on. Drop cloths down. Written price first. Call (516) 559-4877 for a free estimate.
Written by Rick Sumner, Owner at Tidemark Water Damage Hempstead, serving Hicksville’s homeowners with written-price-first mold remediation.