Provider profile
911 Flood of Long Island (formerly Flag Enterprises)
Provider snapshot
What this listing says
Long Island homeowners dealing with mold after water damage who want a family-owned restoration company with a NY State mold contractor license (#00152) and 40 years in business.
Best for
- Long Island homeowners in Nassau or Suffolk County who need mold remediation tied to a water damage event — this company handles both under one roof.
- Property owners who need hazmat-adjacent work (asbestos, lead) done alongside mold remediation, avoiding the need to coordinate multiple contractors.
- Homeowners dealing with insurance claims — multiple reviewers note the company works directly with insurance companies and helps navigate the claims process.
- Anyone needing emergency response at odd hours — the company operates 24/7 and reviews confirm rapid dispatch, sometimes within the hour.
About this company
911 Flood of Long Island, formerly Flag Enterprises, is a family-owned restoration company based in North Lindenhurst, NY. They have been operating since 1985 — roughly 40 years — and cover Nassau County, Suffolk County, and the five boroughs. Their primary identity is water damage restoration, but they hold a New York State mold remediation contractor license (#00152) and do mold work as a natural extension of their flood cleanup business.
Their mold remediation page lays out a detailed step-by-step process: containment setup, negative air machines running at 4-8 air changes per hour, HEPA filtration, demolition of contaminated materials, scraping and dry ice blasting of structural surfaces, bio-washing, and encapsulation. They run HEPA air filtration for a minimum of 72 hours after abatement before post-remediation testing. They also handle asbestos abatement (NY State license #81105), lead removal (EPA-certified firm), fire and smoke damage, sewage cleanup, and puffback cleanup. The breadth of hazmat-adjacent services is unusual for a company this size.
The company operates under the legal name Flag Enterprises. Robert "Bobby" Sands appears to be the owner, with Gary Sands and Tom Modafferi running day-to-day operations. Multiple reviews mention Gary and Tom by name as responsive and hands-on. The company claims an A+ BBB rating and holds home improvement contractor licenses in both Nassau and Suffolk counties.
48 Google reviews at 4.8 stars with zero negatives in the last 18 months is a strong signal, though the total review count is modest. Most of the detailed positive reviews describe emergency flood response rather than mold-specific work, which reflects the company's primary identity as a water damage outfit.
Services
Service area
Based in North Lindenhurst, NY (840 N Wellwood Avenue). Serves Nassau and Suffolk counties on Long Island plus New York City boroughs (Queens, Bronx, Brooklyn, Manhattan). Projects outside the mapped service area may be considered on a case-by-case basis.
Review consensus
Gary Sands is the most frequently named person in reviews, praised for being responsive, easy to reach by phone, and reassuring during stressful situations. Tom Modafferi (also called Tommy) draws praise for on-site expertise and professionalism. Reviewers consistently mention fast response — multiple accounts describe crews arriving within an hour of a call, including on weekends and after hours. Several reviewers note the company helped them navigate insurance claims and worked directly with adjusters. Bobby Sands (Robert) is mentioned as the owner in at least one detailed review describing years of positive experience.
0 found across 48 total reviews at 4.8★. No negative reviews (0 found across 48 total reviews at 4.8 stars) from the last 18 months. There is no recent complaint data to analyze.
The review profile skews heavily toward flood and fire restoration work rather than mold remediation. When mold is mentioned, it typically follows a water event — basement floods, roof leaks, pipe failures. This reinforces the company's identity as a restoration-first operation. The absence of any recent negatives across 48 reviews is notable but the modest total count means a single bad experience could shift the rating noticeably.
Gary Sands (owner/partner — consistently positive, praised for responsiveness, phone availability, and guiding customers through stressful situations). Tom Modafferi / Tommy (field lead — positive, praised for expertise, professionalism, and on-site work quality). Robert 'Bobby' Sands (owner — positive, described as long-time owner with deep relationships). Eddie (field crew — positive, mentioned alongside Tom for asbestos removal work).
Ask for Gary when you call — he is the person reviewers describe as the first point of contact and the one who sets expectations on scope and cost. Get an independent mold assessment before accepting their remediation proposal, since they do both testing and remediation. If your mold problem stems from a flood or water event, this company's 40-year track record in water damage restoration means they can address the root cause and the mold in a single engagement.
Keep in mind
- They do both mold inspection/testing and remediation. This is a conflict of interest — the company assessing your mold problem is the same one getting paid to fix it. Get an independent mold test before committing to their remediation scope.
- Their core business is water damage and flood cleanup. Mold remediation is a secondary service. If you need mold work unrelated to water damage, ask how many standalone mold projects they complete per year.
- They claim to cover Long Island plus all five NYC boroughs. That is a wide service area for a family-owned shop based in North Lindenhurst. Confirm response times and crew availability for locations outside Nassau and Suffolk counties.
- Most Google reviews describe flood and fire restoration work. Fewer reviews specifically address mold remediation outcomes, so mold-specific track record is harder to verify from public feedback alone.