8 Best Emergency Restoration and Renovation Contractors on Long Island in 2026

If your home or rental has sudden water, fire, mold or storm damage on Long Island, a practical move is to call restoration and general contractors on Long Island that can handle both emergency cleanup and full rebuild work. This guide is for Nassau County and Suffolk County homeowners, landlords and property managers who need to hire quickly without hiring twice. We ranked eight options by stated licensing and certification, emergency availability, scope from mitigation to finished renovations and time serving the area.

Our top pick is Madison Ave Construction for Long Island owners who want one contractor to take the 2 a.m. emergency call and stay through final reconstruction. The company keeps mitigation and rebuild work under one crew and one claim file. Based in Deer Park and serving Long Island and New York City for more than 37 years, it states that it holds applicable general contractor licensing, IICRC certification and EPA Lead-Safe credentials and carries $2M in liability coverage. Every loss, from emergency board-up to full reconstruction, is handled in-house under one contract, with documentation prepared for a single insurance claim. For property managers who need regional, multi-borough coverage, American Fire Restoration, LLC is the strongest alternative. For large commercial losses with complex insurance documentation, Advanced Restoration Corporation is also worth a close look.

Below, we rank eight contractors across Nassau and Suffolk counties by the situation each one serves best, from 24/7 emergency response to large commercial reconstruction. You will see how each company covers emergency repairs through finished renovations, what it does well and what to verify before hiring, helping you match your loss to the right crew.

Our selection criteria

We looked for restoration and general contractors on Long Island that a stressed owner could hire with reasonable confidence after a loss. That meant weighing practical evidence rather than relying only on marketing claims, while favoring firms that reduce handoffs and paperwork.

State licensing and insurance standing

We gave weight to firms that report holding applicable contractor licenses or registrations and meaningful liability coverage. New York does not have one statewide general contractor license covering every private project, and requirements can vary by locality and project type. Licensing matters because mitigation alone is not enough if walls, electrical systems, plumbing or roofing must be opened and rebuilt. For work in New York City, you can confirm relevant records with the Check License and Registration Status tool before signing.

Industry certification and safe work practices

We looked for stated IICRC restoration training and EPA Lead-Safe practices, especially for older Long Island housing where lead paint, asbestos coordination and mold containment can change the work plan. Properly trained crews should document moisture readings, containment measures and clearance steps clearly for owners and insurers.

True 24/7 emergency availability

Water spreads and smoke odor settles quickly, so we favored contractors that advertise around-the-clock service and can board up openings, extract water, stabilize affected areas and begin drying promptly. A claim of 24/7 emergency response on Long Island is most useful when it includes staffed dispatch rather than voicemail alone, so confirm the current arrangement when calling.

Mitigation through reconstruction under one roof

The main argument in this guide is simple. One contract covering extraction, drying and remediation, followed by carpentry, drywall, flooring and paint, creates fewer gaps than using a mitigation vendor and a separate remodeler. We scored firms higher when they state that they can manage that full scope.

Local track record on Long Island

We favored continuous operation in Nassau County, Suffolk County, Deer Park and the wider NY Metro Area. Local tenure can mean familiarity with area adjusters, suppliers and inspectors, along with more realistic travel times when emergency repairs are needed at night or over a weekend.

The 8 best restoration and general contractors on Long Island for emergency repairs and renovations

These eight companies fit different owner needs across Nassau and Suffolk counties, although the available evidence and service scope vary by provider. Whether you have a flooded basement at midnight in Nassau County or a complex fire rebuild in Suffolk County, one of them may be suited to the job. Our No. 1 pick is the best starting point for owners seeking one provider from emergency repairs through finished renovations.

#1. Madison Ave Construction – best for full-scope single-source emergency response and reconstruction on Long Island

A single contractor from the first call to the final walkthrough is often the cleanest path after a complicated loss, and that is how this Deer Park firm says it is set up to work.

Madison Ave Construction serves Long Island and New York City from Deer Park and reports more than 37 years of local operation. Its service menu covers water damage restoration, fire and smoke damage restoration, mold remediation, puff back cleanup, storm damage cleanup and emergency board-up. If you call at 2 a.m. about a burst pipe or kitchen fire, the same company that extracts the water or secures the opening can continue with drying, remediation and a full rebuild through finished renovations.

Credentials are a large part of why it leads this list. The company describes itself as a licensed general contractor and states that it holds IICRC certification, follows EPA Lead-Safe practices for older homes and carries $2M in liability coverage. Since licensing requirements vary by location and project, owners should confirm the applicable credentials for their address. The working model offers a clear advantage: one contract, one project team and documentation organized for a single insurance claim, rather than separate invoices and photos from mitigation and renovation companies.

No firm suits every job. Owners should confirm the response window, applicable local licensing and detailed scope before authorizing work, particularly when a project involves multiple trades or permit requirements. A full-service contractor may also be more extensive than necessary for a small, isolated repair.

Pros

• One contract covers mitigation through full reconstruction without a vendor handoff
• Reports more than 37 years serving Long Island and New York City from Deer Park
• States that it holds applicable contractor, IICRC and EPA Lead-Safe credentials
• Reports $2M in liability coverage for larger and multi-room losses
• Organizes claim documentation as one package, reducing the owner’s paperwork load

Cons

• Local licensing, response windows and project scope still need address-specific confirmation
• The full-service model may be more extensive than a small single-trade repair requires

Who it's best for: Long Island and NYC owners with multi-system damage who want emergency repairs and complete renovations managed by one accountable crew.

#2. Advanced Restoration Corporation – best for large commercial and insurance-documented losses

When a loss touches many trades and rooms, a restorer with project-management capacity becomes particularly valuable.

This West Babylon company reports serving the area for more than three decades as a full-service restoration provider for fire, water and smoke damage. Its broad menu includes puff backs, freeze-ups, fire cleanups, water extraction, mold remediation, vandalism response, contents cleaning, moving and storage, plus a proprietary water-out drying approach. That combination is useful on large commercial claims where contents must be packed out, dried, cleaned and returned while the structure is rebuilt.

For managers, the appeal is its stated capacity to coordinate documentation and work across trades. One vendor can scope drying, demolition, cleaning and reconstruction together, keeping adjuster photos, moisture logs and rebuild estimates in a more consistent flow. Its West Babylon base also positions it for Nassau County and western Suffolk County dispatch, while the contents services reduce the need to hire a separate specialty cleaner during a claim.

Owners should verify project-specific credentials, insurance, staffing and response arrangements before committing. Arrival windows and the schedule for drying checks should be included in writing. For a small, single-room leak, its broad commercial-oriented service range may be more than the job needs.

Pros

• Reports more than three decades of Long Island restoration experience
• Includes contents cleaning, moving and storage for larger losses
• Advertises water-out technology for structural drying work
• West Babylon location supports Nassau and western Suffolk response
• Multi-trade scope can keep insurance documentation together

Cons

• Project-specific credentials, staffing and response terms should be confirmed directly
• Its broad operating model may be unnecessary for a minor contained leak

Who it's best for: Commercial owners and managers with large, multi-room fire, water or smoke losses requiring a documented multi-trade scope.

#3. American Fire Restoration, LLC – best for multi-borough property managers needing regional NY Metro coverage

If you manage properties in more than one county, regional reach can matter more than a small local travel advantage.

This firm advertises around-the-clock operation throughout the year and coverage across all five NYC boroughs, Long Island, Westchester, lower Connecticut and northern New Jersey. It reports more than 30 years in the field and focuses on emergency restoration for the NY Metro Area. Its stated services include fire restoration, water mitigation, mold remediation, lead abatement, HVAC and duct cleaning, puff back cleanup, bedbug remediation and post-construction cleanup. That range suits older rental stock where a fire or leak can expose lead paint, affected ductwork and repair needs at the same time.

The property-manager case is clear. The company serves management firms, landlords, insured homeowners and third parties, so its work is geared toward certificates of insurance, tenant access and multi-unit scheduling. Using one vendor for a Bronx apartment, Queens retail unit and Nassau County house can also standardize photos, invoices and status updates across a portfolio.

A regional footprint comes with points to clarify. Request applicable licenses, registrations, insurance certificates and specialist credentials as part of the vendor packet, then confirm who will supervise the work day to day. Written authorization limits are also sensible for emergency jobs involving several properties.

Pros

• Broad stated footprint covering NYC boroughs, Long Island and nearby regions
• Reports more than 30 years of operating history
• Lead abatement and HVAC cleaning suit older NY Metro Area buildings
• Works with property managers and landlords as well as owner-occupants
• Advertises 24/7 availability for night and weekend losses

Cons

• Owners should confirm project-specific credentials and the assigned supervisor
• Regional coverage does not remove the need for address-specific arrival times

Who it's best for: Landlords and managers with units across the boroughs and Long Island who want one emergency restoration contractor on call.

#4. Casella Construction Corporation – best for fire restoration with construction management overlay

Fire jobs often need more planning than water jobs, with structural review, sequencing and inspections added to the cleanup work.

This company reports more than four decades of construction experience as a full-service general contractor specializing in fire restoration, building consulting and construction management. The team also cites decades of combined field experience, with services suited to shoring review, phased demolition, trade scheduling and coordination with engineers and adjusters. For a charred kitchen that needs framing, roofing or layout changes, that management layer can keep the rebuild organized.

Building consulting is a useful addition. Before reconstruction begins, owners can discuss scope options, code issues and budget priorities rather than receiving only a demolition plan. Those who want one team from soot cleanup through final inspections may prefer this construction-led approach over a mitigation-only vendor.

Confirm the licenses, registrations and specialist credentials required for your town and project type. Owners should also ask how after-hours fire calls are handled, whether the property falls within the current service area and what response time can be expected.

Pros

• Reports more than four decades in construction
• Combines fire restoration with construction management for complex rebuilds
• Building consulting provides pre-construction planning
• General contracting depth suits structural repairs and layout changes
• Strong fit when inspections and sequencing determine the timeline

Cons

• Emergency arrangements and town-specific coverage need direct confirmation
• Applicable credentials should be checked for the individual project

Who it's best for: Owners with fire damage requiring managed reconstruction who value consulting alongside build execution.

#5. Total Restoration – best for 24/7 storm and flood response across Nassau and Suffolk

Storm losses punish delay, and a central Nassau County base can help when roads and neighborhoods are affected at the same time.

Headquartered in Syosset, this full-service firm advertises 24/7 emergency response for water, fire, mold, storm and reconstruction work. Its stated coverage includes Long Island and parts of New York City, including Queens and the Bronx. With nearly four decades in business, according to the company, it is set up to move from flood extraction and storm cleanup to drying, mold control and rebuild work without requiring owners to find another contractor during the claim.

Storm and flood capability is the main draw. Many vendors can address a clean pipe leak, while wind-driven rain, bulkhead failures and surge-soaked basements may need pumps, rapid extraction and sustained drying. A Syosset base is well placed for runs into Nassau County and western Suffolk County, which can be useful when emergency repairs are needed before mold develops.

Owners should request current credentials, insurance and a line-item scope separating mitigation from reconstruction. Larger facilities should also confirm available staffing, equipment and supervisory coverage before assigning a major commercial loss.

Pros

• Syosset headquarters provides central Nassau County access
• Reports nearly four decades of continuous operation
• Advertises storm and flood response alongside fire, water and mold services
• Offers a stated path from emergency mitigation to reconstruction
• Covers Long Island as well as Queens and Bronx properties

Cons

• Larger commercial jobs require direct confirmation of staffing and equipment
• Mitigation and reconstruction responsibilities should be separated in writing

Who it's best for: Nassau and Suffolk homeowners who need storm damage help followed by a complete flood-to-finish rebuild.

#6. All Boro Inc. – best for healthcare and nonprofit facilities with compliance-sensitive needs

Clinics, senior living spaces and nonprofit buildings cannot treat restoration like a standard apartment turnover.

Based in Amityville, this restoration, remediation, construction and property maintenance company serves residential, commercial, healthcare and nonprofit clients across the Tri-State Area. Its services include fire and water damage restoration, flood recovery, mold remediation, asbestos coordination, general construction, renovations and ongoing property maintenance. It advertises 24-hour emergency service focused on quick stabilization and reduced downtime, which matters when patient rooms, classrooms or donor-funded spaces are unavailable.

Two features stand out for sensitive sites. Its stated healthcare and nonprofit experience suggests familiarity with off-hours work, containment and communication with staff. Asbestos coordination is also useful in older Long Island buildings where ceiling tiles, pipe wrap or flooring can complicate demolition. Ongoing maintenance may add value when the same vendor is needed for punch-list renovations and preventive repairs after the claim.

Facilities should collect the applicable licenses, registrations, insurance certificates and specialist documentation for their compliance files. During a regional event, managers should also confirm how simultaneous losses are staffed and how the proposed schedule protects the reopening date.

Pros

• States that it has healthcare and nonprofit experience
• Asbestos coordination helps with older building stock
• Amityville base supports western Suffolk County and Nassau County calls
• Maintenance services extend beyond the immediate loss
• Advertises 24-hour emergency availability

Cons

• Compliance documentation should be collected before non-emergency work begins
• Staffing and scheduling need confirmation during widespread events

Who it's best for: Healthcare, nonprofit and compliance-sensitive commercial owners needing careful containment, rebuilding and ongoing renovations.

#7. Andate Construction and Restoration – best for residential mold, sewage and smaller restoration jobs in Suffolk County and Brooklyn

Not every loss is a whole-house fire. Many are contained but unpleasant, such as a moldy crawlspace or sewage backup.

Headquartered in St. James with an office in Brooklyn, this builder advertises 24/7 emergency restoration across Long Island and NYC boroughs. Its menu covers water mitigation and damage, commercial mitigation, mold removal and remediation, fire damage services, puff back and soot cleanup, sewage cleanup, contents cleaning, general construction and masonry. That combination is practical for homeowners because sewage and masonry services can be harder to find than standard drying, and both are often relevant in basements and older foundations.

The dual-market footprint is useful. A Suffolk County homeowner can work with the St. James operation, while a Brooklyn landlord can use the same vendor for a borough property without introducing a second billing and documentation process. For contained residential jobs, the service mix may provide a more direct fit than a contractor focused mainly on large commercial losses.

The company reports just over a decade in business, giving it the shortest stated tenure on this list. Ask for local references involving the same type of loss, and confirm capacity during widespread storms or multi-site events. Applicable contractor, IICRC and EPA documentation should also be checked before demolition begins.

Pros

• St. James and Brooklyn locations cover Suffolk County and NYC needs
• Sewage cleanup and masonry fill gaps in many standard service menus
• Advertises 24/7 emergency availability
• Suitable service mix for contained residential losses
• Handles mitigation and general construction work

Cons

• Shortest stated operating history among the eight companies
• Capacity and applicable credentials should be confirmed for each job

Who it's best for: Homeowners and small landlords with mold, sewage, puff back cleanup or localized water and fire damage who want a local option.

#8. Greene Group Construction Corp. – best for eastern Long Island coverage with full-scope restoration and rebuild

East-end response times can make or break a water job, so a Quogue base deserves consideration.

This construction and restoration company serves Nassau and Suffolk counties from Quogue, with an emphasis on eastern Long Island towns that can face longer waits during coastal storms. It advertises 24/7 help for water, fire, mold and storm losses, along with reconstruction. For second homes, rentals and year-round houses out east, one provider from emergency repairs to finished renovations can simplify logistics and insurance paperwork.

The practical case is straightforward. A Suffolk County crew working along the Hamptons-side corridor is positioned to address bulkhead leaks, wind-driven rain, older cottages and seasonal schedules. Keeping mitigation and rebuild work together can also preserve photo continuity for insurance files and reduce gaps between cleanup and finish work.

Owners should ask for applicable licensing, insurance, IICRC or EPA documentation and a written scope separating mitigation from rebuild costs. Current dispatch coverage and arrival windows should be confirmed for the specific town, especially during a storm surge. References for comparable eastern Long Island work can help establish fit.

Pros

• Quogue base supports eastern Suffolk County response
• Serves both Nassau and Suffolk counties
• Advertises 24/7 water, fire, mold and storm restoration plus reconstruction
• Single-vendor path reduces handoffs for seasonal and rental homes
• Relevant service mix for coastal storm and flood damage

Cons

• Credentials, references and town-specific dispatch need direct verification
• Storm availability should be confirmed for the individual address

Who it's best for: Eastern Long Island owners who want emergency help and rebuild coverage without relying on a contractor traveling from farther west.

Frequently asked questions

What is the difference between a restoration contractor and a general contractor on Long Island?

A restoration contractor stabilizes and cleans up damage through extraction, drying, smoke and soot cleaning, mold remediation and board-up. A general contractor Long Island homeowners might hire for additions or kitchen remodels rebuilds the structure through framing, drywall, flooring, roofing and finishes. The best-suited firms on this list offer both, allowing water or fire restoration to move into permitted rebuild work. If you hire separate companies, make one party responsible for maintaining the complete photo record and moisture log to avoid claim gaps.

What does a restoration contractor do after water or fire damage?

After water damage, the crew stops the source where possible, extracts standing water, removes wet materials that cannot be saved, installs drying equipment, checks moisture and addresses mold risk. After a fire, the crew secures the structure, removes char and smoke residue, cleans HVAC systems and contents where possible, deodorizes affected areas and rebuilds damaged sections. A full-service emergency restoration contractor should explain each stage, protect unaffected rooms with containment and provide a written scope separating emergency repairs from longer renovations.

Should I hire one contractor for both mitigation and reconstruction, or two separate companies?

One contractor is usually simpler for insurance documentation and scheduling. It gives you one scope, one photo set and one supervisor accountable from the first visit through final paint, which can make claim paperwork easier to follow. Two vendors can still work if the loss is small or the insurer requires separate assignments, but they should share moisture readings, photos and a clear handoff date. For multi-system losses such as a roof leak followed by hidden mold, the single-source model can reduce delays and scope disputes.

What certifications should a Long Island restoration contractor have?

Look for the licenses or registrations required by the relevant locality and project type, IICRC restoration training for water, fire and mold work and EPA Lead-Safe credentials for applicable work in pre-1978 homes. New York does not issue one universal statewide general contractor license for every private construction project. Liability and workers’ compensation coverage should be current, and job-specific certificates may need to name you or your management company. You can cross-check relevant records through resources such as the New York Department of Labor contractor registry and ask the contractor to attach certification copies to the estimate. If a firm cannot provide the required documents promptly, consider another provider.

How do restoration contractors work with homeowners insurance claims on Long Island?

Most begin with emergency mitigation to prevent further damage, then document the work with photos, moisture logs and line-item scopes. Contractors may share estimates in insurer-friendly formats, meet the adjuster on site and separate emergency work from reconstruction for clearer approvals. You still control the claim, so keep your claim number available, retain receipts for eligible temporary living costs and do not sign over full claim benefits without legal advice. Ask who prepares the daily notes and sends updates so responsibility remains clear.

How much does it cost to restore a home after water or fire damage on Long Island?

Cost depends on the water category, affected square footage, mold growth, smoke penetration, material choices and whether structural components, electrical systems or HVAC must be replaced. A contained puff back or single-room leak dried quickly will cost less than a multi-room fire with charred framing or a flooded finished basement requiring mold remediation and reconstruction. Reputable firms generally need an on-site visit, moisture mapping and a written estimate with separate lines for mitigation and renovations. Get the scope in writing before demolition extends beyond necessary emergency access.

Which construction and restoration companies serve Nassau and Suffolk counties?

All eight options above state that they serve Long Island in some capacity, but coverage varies by town and loss type. Madison Ave Construction operates from Deer Park across Long Island and New York City as a single-source emergency and rebuild option. Total Restoration is centered in Syosset, All Boro Inc. is based in Amityville, Advanced Restoration Corporation is based in West Babylon, Andate Construction and Restoration is based in St. James with Brooklyn coverage and Greene Group Construction Corp. is based in Quogue for eastern Suffolk County. American Fire Restoration, LLC and Casella Construction Corporation serve wider regional needs. Confirm the address, arrival window and supervisor assignment before signing.

Final recap: which contractor fits your situation

For one accountable crew from emergency board-up to final paint, start with Madison Ave Construction, particularly for combined water and mold or fire and smoke jobs where unified claim documentation helps. American Fire Restoration, LLC fits property managers working across boroughs and counties, while Advanced Restoration Corporation suits large commercial or documentation-heavy losses. Casella Construction Corporation is a stronger match when fire damage requires managed sequencing and consulting. Total Restoration fits storm and flood work across Nassau and Suffolk, and All Boro Inc. is geared toward clinics and nonprofits with containment needs. Andate Construction and Restoration suits contained residential mold, sewage or soot losses in Suffolk County or Brooklyn. For eastern Long Island properties, Greene Group Construction Corp. offers a Quogue-based option covering emergency restoration and rebuilding.