Water Damage Restoration in New York City, NY

When a Pipe Bursts on Floor 8, Three Floors Pay for It

In NYC’s stacked, shared buildings, water damage is never just your problem. We respond fast across all five boroughs with the licenses to handle whatever’s behind the walls.
Green Island Group Corp roofing experts working on residential roof installation and repair

See What Our customers Are saying

Nancy Marano Silva
Nancy Marano Silva
I needed a professional consultation explanation of procedure for safe removal of Asbestos in my apartment complex. Without having an account yet, I was very impressed with the caring, knowledgeable and generous advice offered by Jessica, and will look forward to doing business in the future. Thank you so much! I feel much more informed about a sometimes scary endeavor. Peace. Nancy Silva Mineola, NY.
Mia Munoz
Mia Munoz
Used this company to clean up some water flood in my house. They were fast and easy to work with.very professional, Would recommend to anyone!
Nini Valle
Nini Valle
Great company, had a flood and they responded quickly and efficiently. Billed my insurance company directly. I highly recommend this company!
joe colapietro, jr
joe colapietro, jr
I had pipe freeze in my basement right before a snow storm and they made to within an hour to help start the clean up process. They we by our side throughout the entire process and even helped with the insurance company. They did such a great job with the cleanup, repair, remidiation, I contracted them to perform the repairs and finishes in the basement. They came with enough manpower and material to get the job done. Leo and Jessica were nothing but a pleasure to deal with!!
Cristian Arredondo c
Cristian Arredondo c
I had some water damage in my home and Green Island was able to take care of my issue quickly and effectively. I am very pleased with the work they did. They responded quickly and were very professional.
Michael M
Michael M
Outstanding service! From the office to the field crew everyone was friendly, helpful and responsive. I highly recommend Green Island Group.
Green Island Group Corp builder using a hammer to break an interior wall during residential demolition

Water Damage Repair in NYC

Dry Walls Don't Lie But Hidden Moisture Does

What most people don’t realize after a water event is that the visible damage is the easy part. The real risk is what’s sitting inside your walls, under your floors, and behind your baseboards moisture that doesn’t show up until mold does. In a city where a 600-square-foot apartment can become uninhabitable from a single slow leak, the margin for error is zero.

New York City’s building stock makes this especially complicated. Pre-war walk-ups in Harlem, Bed-Stuy, and Washington Heights were built with materials that hold moisture differently than modern construction and many contain asbestos or lead that gets disturbed the moment remediation begins. If your restoration company isn’t licensed to handle that, the job stops. We hold the NYS DOL Asbestos license and USEPA Lead certification alongside our water and mold credentials.

Then there’s the co-op and condo reality. When water travels between floors in a building, you’re not dealing with one insurance claim you’re dealing with multiple policies, a building master policy, and a co-op board that wants documented proof before approving any repair work. The outcome you actually need isn’t just a dry apartment. It’s a fully documented, properly remediated, board-ready restoration that closes the claim and keeps mold from coming back six months later.

Licensed Water Restoration Companies NYC

The License Stack That Actually Covers All Five Boroughs

New York City has its own licensing requirements separate from the state, separate from Nassau or Suffolk County. The NYC Department of Buildings issues its own General Contractor license. The NYC Business Integrity Commission issues its own Trade Waste license. Most restoration companies operating in the five boroughs don’t hold both. We do along with our NYS DOL Mold license, NYS DOL Asbestos license, USEPA Lead certification, and USEPA RRP certification, all under one roof.

That matters in a city where a co-op board can reject your contractor, where HPD can issue violations for non-compliant mold remediation, and where pre-war buildings from the Lower East Side to Riverdale regularly contain hazardous materials that require separate credentials to legally disturb. We’ve worked across NYC’s full range of building types residential towers, brownstones, mixed-use commercial buildings, and public housing and we bring the documentation to prove every step of the work.

When you’re dealing with water damage in one of the most regulated, most expensive, and most densely built cities in the country, the company you hire needs to be built for exactly that environment.

Green Island Group Corp roofing experts installing or repairing roofs in Nassau County, NY

Emergency Water Damage Restoration Service NYC

From the First Call to the Final Inspection Here's What Happens in NYC

It starts with the call. We operate 24/7, and real customers have documented technician arrival within two hours of their initial contact. In a city where a burst pipe on an upper floor can damage three units before morning, that response window is the difference between a manageable claim and a gutted apartment.

Once on-site, we assess the full scope not just what’s visible, but what moisture meters and thermal imaging reveal behind surfaces. In NYC’s older building stock, that assessment often uncovers secondary concerns: deteriorating pipe insulation that may contain asbestos, lead paint on walls being cut into, or mold already beginning in cavities that weren’t dried after a previous leak. Because we hold the credentials to handle all of it, nothing gets paused for a referral.

From there, water extraction and structural drying begin using commercial-grade equipment calibrated for the job size whether that’s a single flooded basement apartment in South Queens or a multi-floor water event in a Midtown high-rise. NYC’s Department of Buildings may require permits for certain repair work, and if mold is found in a building with 10 or more units, NYC Local Law 55 mandates that remediation be performed by NYS DOL-licensed professionals. We’re already compliant which means your timeline doesn’t get derailed by regulatory surprises. The job gets done right, documented thoroughly, and closed out in a way that satisfies your insurance carrier, your building management, and your board.

Man and woman holding water buckets and talking on phones during a household water emergency.

Ready to get started?

Explore More Services

About Green Island Group Corp

Get a Free Consultation

Water Damage Restoration Service New York City

One Company, Every License, Every Borough

Water damage restoration in New York City isn’t a single-step job. It’s water extraction, structural drying, mold assessment, asbestos evaluation, lead-safe work practices, debris removal, and reconstruction often in a building where multiple parties have a stake in the outcome. We handle the full scope, which means you’re not coordinating four different contractors with four different timelines and four different insurance documentation packages.

For residential clients whether you’re in a pre-war co-op on the Upper West Side, a condo in Long Island City, or a multi-family in Crown Heights the process includes thorough moisture mapping, drying verification, and mold prevention treatment before any reconstruction begins. For commercial and mixed-use properties, the same standards apply, with the added layer of NYC DOB permit compliance and BIC-compliant waste removal for all debris hauled off-site.

The secondary hazards are where most restoration companies in NYC fall short. When water damage opens up walls in a building constructed before 1978, you’re likely looking at lead paint. When it disturbs pipe insulation or floor tiles in a pre-war structure, asbestos is a real possibility. Our NYS DOL Asbestos license and USEPA Lead certification mean those discoveries don’t stop the job they’re handled in-house, legally, and without adding weeks to your timeline. From Harlem to Howard Beach, from Williamsburg to Tottenville, we cover all five boroughs with the same complete credential set.

Green Island Group Corp technicians removing and cleaning asbestos roof materials with full protective gear

Who is responsible for water damage from an upstairs neighbor in a NYC co-op?

This is one of the most common and most contested questions in NYC water damage situations, and the answer depends on your building’s proprietary lease or condo bylaws. Generally speaking, if the source of the leak was within the upstairs unit (a burst appliance hose, an overflowed tub, a failed toilet supply line), the upstairs owner’s policy is typically responsible for the resulting damage to your unit. However, if the source was a building pipe or shared infrastructure, it often falls under the building’s master policy.

The problem is that most unit owners don’t know the distinction until they’re already in the middle of a claim. What makes this even more complicated in New York City is that co-op and condo boards often require documented proof of damage scope, source, and remediation before approving repair work and insurance carriers on both sides want their own documentation. We assess and document damage in a way that satisfies multiple carriers simultaneously, which is exactly what you need when more than one policy is involved.

Mold can begin germinating within 24 to 48 hours of water exposure and in NYC apartments, where ventilation is often limited and humidity stays elevated, that window can be even tighter. A slow leak behind a bathroom wall in a pre-war building can produce visible mold growth in less than three days if the cavity isn’t dried properly. By the time you smell it, you’re already past the prevention stage.

This is why the drying phase of water damage restoration matters as much as the extraction phase. Pulling standing water out of a space doesn’t mean the structure is dry. Walls, subfloors, and ceiling assemblies hold moisture long after the surface feels dry to the touch. We use moisture meters and thermal imaging to verify that structural drying is complete before closing up any surfaces because in a 700-square-foot NYC apartment, one missed wet cavity can turn a $3,000 water damage repair into a $15,000 mold remediation project.

NYC Local Law 55 applies to residential buildings with 10 or more units. Under this law, when there is more than 10 square feet of mold present, the assessment and the remediation must be performed by separate NYS Department of Labor-licensed professionals the assessor and remediator cannot be the same entity. This separation exists to prevent conflicts of interest in determining the scope of work.

For landlords and building owners, this isn’t optional. Hiring an unlicensed contractor for mold remediation in a covered building exposes you to HPD violations and potential legal liability from tenants. For unit owners in co-ops and condos, it means that the company you hire needs to hold the actual NYS DOL Mold license not just claim experience with mold. We hold that license. When remediation is complete, we provide the documentation your building management, co-op board, or insurance carrier needs to confirm the work was done in full compliance with city law.

It depends on the source of the water. Standard renters insurance in NYC typically covers sudden and accidental water damage like a burst pipe or an overflowed appliance but it generally does not cover flooding from outside sources like storm surge or sewer backup unless you’ve added a specific rider. With the increase in extreme rainfall events hitting the five boroughs in recent years, including the remnants of Hurricane Ida and the September 2023 storm that dumped over seven inches of rain in under 24 hours, the distinction between “pipe burst” and “flood” has become increasingly important.

If your personal belongings are damaged and the source was internal (a building pipe, a neighbor’s leak, your own appliance), your renters policy is likely your first call. But the structural repairs walls, floors, ceilings are typically the building’s or the unit owner’s responsibility, not the renter’s. What renters often don’t realize is that they can still benefit from having a restoration company document the damage thoroughly from day one, because that documentation supports their personal property claim even if the structural repair is covered elsewhere.

In New York City’s older building stock and a significant portion of residential buildings in neighborhoods like the Lower East Side, Harlem, Flatbush, and Mott Haven predate World War II water damage remediation regularly uncovers asbestos-containing materials and lead paint. When a contractor opens a wall in a pre-1978 building, they are legally required to follow USEPA Renovation, Repair, and Painting (RRP) rules for lead-safe work practices. When pipe insulation, floor tiles, or plaster is disturbed and suspected of containing asbestos, work must stop unless the contractor holds a NYS DOL Asbestos license.

Most restoration companies in NYC are not equipped to handle this in-house. They stop work, refer out, and leave you coordinating multiple contractors and multiple timelines while your property sits open and vulnerable to further damage. We hold both the NYS DOL Asbestos license and the USEPA Lead and RRP certifications alongside our water and mold credentials. When those materials are discovered during remediation and in NYC, it happens regularly the job continues without interruption.

Multi-floor water events in NYC high-rises are logistically different from a single-family home flood in almost every way. Access to affected units requires coordination with building management or the super. Work hours may be restricted by building rules. Debris removal must comply with NYC Business Integrity Commission regulations, which require a BIC Trade Waste license for commercial waste hauling something most restoration companies don’t hold. And if the building has a co-op board or condo association, repair work often requires board approval before it can begin, which means your documentation needs to be detailed enough to satisfy that process.

We hold the NYC BIC Trade Waste license, the NYC General Contractor license, and all the supporting credentials required to operate legally and efficiently in high-rise and multi-unit buildings across the five boroughs. We’ve worked in everything from postwar concrete towers in Co-op City to luxury residential conversions in Long Island City, and we understand that in these buildings, the restoration process involves as much coordination and documentation as it does actual drying and repair. That’s the reality of doing this work in New York City and it’s exactly the environment we’re built for.