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.
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AfterFast, Reliable Mold Remediation Across Bronx
Mold remediation in Bronx typically costs $1,800 to $6,500 for a contained multi-room job, and $450 to $1,200 for a single bathroom or closet. Most Bronx jobs run through a landlord, co-op board, or NYCHA manager, not a single homeowner, so we quote in writing and stage the work around housing-authority access rules. Call (910) 613-6568 and a live person answers, 24 hours a day. We’ve been doing this in the Bronx long enough to know which pre-war walkups on the Grand Concourse hide horsehair plaster behind every wall, and which NYCHA buildings need drying logs the manager’s office will actually accept.
Why Marsh Water Damage Restoration Is Bronx’s Preferred Mold Remediation Company
We’re the restoration brand of the Threshold Group family, founded in 2005, and every Bronx job runs on the same two promises that built our name: a written price before any work starts, and a 365-Day Done Right Promise printed on the work order. Tobias Reyner runs our technical team, and every tech who steps into a Bronx apartment is background-checked, identity-verified, and sent to you by name and photo before the knock. No anonymous crew shows up at your door. That matters in the Bronx, where tenants are often home alone with kids, and older homeowners have every right to know exactly who is walking in.
Bronx customers tell us the same thing after every job: the mold was bad, but the uncertainty about who would show up was worse. We remove both. Your technician wears a photo ID badge at the door, every single time. That’s the Threshold Standard, and we don’t waive it for small jobs or busy weekends. Response time to Bronx neighborhoods including Mott Haven, Pelham Parkway, and Throggs Neck runs 60 to 90 minutes for emergency calls. A live person answers the phone. Always.
Black Mold Removal in Bronx
Black Mold Removal is the most common call we get from Bronx apartment buildings, especially in pre-war brick walkups where a slow leak behind a cast-iron riser has been feeding Stachybotrys for months before anyone sees the staining. Removing it here is not a spray-and-paint job. We contain the affected unit, run negative air with HEPA filtration, remove the affected drywall or plaster, treat the framing with antimicrobial agents, and dry the cavity to a verified moisture content before any rebuild starts. In the Bronx, a typical black mold removal runs $2,200 to $5,800 depending on how many wall cavities are involved and whether asbestos testing requires abatement staging first.
Containment and Air Quality
We set up full plastic containment with negative air pressure so spores don’t travel down the hallway into your neighbor’s unit. Air scrubbers run the entire time we’re cutting, and we take air samples before and after. You get a written clearance report when the job is done.
What We Remove and What We Treat
We remove mold-damaged drywall and plaster, not just surface mold on paint. Horsehair plaster in pre-1940 Bronx buildings holds moisture like a sponge, and we treat the lath and stud cavities behind it. If the mold has reached insulation inside a wall cavity, that insulation comes out and gets replaced.
Mold Removal Contractor in Bronx
A Mold Removal Contractor in Bronx has to handle more than spore counts. We scope multi-unit losses where a single steam-pipe failure soaked five floors at once, coordinate with building supers and housing-authority inspectors, and still keep the affected family’s apartment livable during the work. Marsh Water Damage Restoration handles the full chain: moisture mapping, containment, removal, antimicrobial treatment, structural drying, and documentation your landlord or insurance adjuster will accept. A standard single-unit mold removal in the Bronx runs $1,500 to $4,200. Multi-unit scopes from a riser break or roof leak run higher because they require staging across multiple apartments and sealed off floor by floor.
Multi-Unit Scoping and Documentation
We don’t treat the one wet unit and leave. Water wicks down through cast-iron riser chases and hidden cavities, so we run moisture mapping on every adjacent unit first. Every reading goes into a drying log with time stamps and equipment settings. That log is what gets a mitigation claim approved at handoff, and it’s what stops mold from reappearing two floors down three weeks later.
Landlord and NYCHA Coordination
We’ve worked in Patterson Houses, Edenwald Houses, and dozens of private pre-war walkups across the Bronx. We know the access schedules, the documentation requirements, and the fact that a NYCHA manager expects a scope of work they can file, not a verbal estimate. You get a written scope before a single wall is opened.
Trusted Brands We Service in Bronx
We run Dri-Eaz dehumidifiers and air movers on every Bronx mold job, paired with Phoenix low-grain refrigerant units when we need deeper drying in humid summer months. XPOWER air scrubbers handle filtration in tight apartment spaces where larger commercial units can’t fit through a pre-war doorway. We stock HEPA filters, antimicrobial treatments, and containment supplies locally so Bronx jobs don’t wait on out-of-state parts orders. If a fan fails on a Friday night in a Throggs Neck basement, we swap it the same evening.
Common Mold Remediation Problems We See in Bronx Homes
- Mold behind original cast-iron radiator bays. Pre-war Bronx apartments still run on steam heat, and the wall cavities behind those radiators sweat every heating season. Slow leaks go unnoticed for years, and by the time staining shows, the stud cavities behind the plaster are fully colonized.
- Recurring mold after a roof repair on a flat-roofed brick building. Nor’easters drive ice dams and membrane failures every winter, and the water channels down inside the walls to lower floors. If the top unit gets repaired without moisture mapping the units below, mold returns within months.
- Asbestos and lead delays that stall the whole job. NYC Local Law requires testing before any demolition in a pre-1978 building. We flag it before we cut, not after the city inspector shows up. Skipping this step is the most expensive mistake a Bronx remediation can make.
- Mold spreading through shared wall cavities in attached rowhouses. The Bronx has miles of attached brick rowhouses where a leak in one home’s shared party wall can colonize the neighbor’s side. Containment has to be planned for both sides, even if only one homeowner called us.
Pricing for Mold Remediation in Bronx, NY
Single-room mold removal in Bronx runs $1,500 to $4,200. Black mold removal with full containment runs $2,200 to $5,800. Crawl space treatment in the low-lying areas near the Bronx River and the Harlem River waterfront runs $1,800 to $4,500, because access is tighter and drying takes longer in those damp soil conditions. Moisture and humidity control with a commercial dehumidifier and follow-up monitoring runs $600 to $1,400. Every job gets a written price before work starts. No after-demo surprises, no verbal estimate that doubles once we open a wall. Call (910) 613-6568 for a free estimate and we’ll send you a technician by name and photo before they arrive.
We Also Serve Cities Near Bronx
Our Bronx crews regularly cross into Bronx-adjacent neighborhoods and nearby cities. We cover Astoria, College Point, East Elmhurst, and Jackson Heights for mold inspection, removal, and air quality restoration. Same Threshold Verified standard, same written price before work starts. If you’re in one of those areas and the mold is spreading, call (910) 613-6568 and ask for our Mold Remediation team.
Serving Bronx, NY - Our Local Coverage Area
We’re based in the Bronx 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 Bronx
Because the visible leak is rarely the only moisture source. Water from a steam-pipe or riser break travels down through cast-iron chases and soaks into horsehair plaster and lath cavities that stay damp for weeks after the surface looks dry. If the cavity wasn’t opened, dried, and treated, the mold has been growing the whole time. Call (910) 613-6568 and we’ll do moisture mapping on every adjacent unit, not just the one that got wet.
Yes, if the building was built before 1978, which covers most of the Bronx’s housing stock. NYC Local Law mandates testing before demolition or wall-cavity opening in those buildings. We arrange the testing and stage the work around the results. Skipping it risks a violation and shuts the job down.
Yes, and it happens regularly. Water wicks down through riser chases, floor joists, and shared party walls. A top-floor leak can colonize wall cavities two or three floors below within three to four weeks. That’s why we scope multi-unit, not single-unit, on any pre-war Bronx building.
Access is scheduled through the development manager, documentation has to meet housing-authority standards, and the scope of work is often written for multiple units at once. We produce drying logs, moisture readings, and pre-loss condition photos that a NYCHA manager can file without pushback. We’ve done it in those developments, and we know the process.
Yes. Rent-stabilization rules require like-kind restoration, which means you can’t replace a period coffered plaster ceiling with plain drywall. We stage the mold removal, then repair with matching plaster profiles. It costs more than a drywall patch, but it avoids a landlord dispute that costs far more. Call (910) 613-6568 for an exact quote on your building.
Written by Tobias Reyner, Owner at Marsh Water Damage Restoration, serving Bronx and the surrounding boroughs since 2005.