Plumbing Services
Long Island & New York City
From a burst pipe at 2am to a full plumbing rough-in for a commercial renovation, Madison Ave Construction provides licensed plumbing services across Long Island and the five boroughs. Our plumbers are licensed in New York State, respond within 60 minutes to emergencies, and coordinate directly with your insurance carrier when plumbing failures cause property damage. We handle everything from emergency repairs to complete system installations — under the same licensed general contractor.
Plumbing emergency or project to quote?
Call NowPlumbing in New York Requires More Than a Wrench
Plumbing in New York's varied building stock — brownstones with cast iron drain stacks, post-war suburban homes on Long Island with galvanized supply lines pushing 60 years old, commercial buildings with complex high-pressure systems and backflow prevention requirements — demands experience that goes beyond basic service calls. The plumbing issues we see most often aren't isolated problems. A leaking supply line in a finished basement has already been dripping into the subfloor for weeks before the homeowner notices. A slow drain in a restaurant isn't just an inconvenience — it's a grease trap issue that triggers health code violations if not addressed correctly.
What sets Madison Ave Construction apart from a standard plumbing company is that we operate within the context of the broader property. When a burst pipe causes water damage, we don't just fix the pipe and leave — we assess the full scope of damage, begin mitigation immediately, document everything for the insurance claim, and handle the restoration work under the same contract. For renovation and construction projects, our plumbers work as a coordinated part of the overall project team rather than as an independent subcontractor who shows up when their schedule allows.
Whether you need a licensed plumber on-site within the hour or a plumbing subcontractor for a long-term commercial build-out, we provide the same standard of licensed, code-compliant work with proper permits and documented inspections — because unlicensed plumbing work in New York creates liability that surfaces at the worst possible time: during a home sale, an insurance claim, or a building department inspection.
Burst pipe or active water leak? Shut off the main water supply valve immediately — typically located near the water meter, in the basement, or at the street shutoff. Then call us. Every minute of active flow increases the scope of water damage to your building materials, contents, and structure.
Plumbing Services We Provide
- 24/7 emergency plumbing response
- Burst pipe repair & water shutoff
- Leak detection & repair
- Drain cleaning & clog removal
- Water heater installation & replacement
- Sewer line inspection & repair
- Bathroom & kitchen plumbing rough-in
- Fixture installation & replacement
- Full repiping — copper & PEX
- Backflow preventer installation
- Commercial plumbing & renovation rough-in
- Insurance damage documentation & coordination
Signs You Need Professional Plumbing Services
Some plumbing problems are obvious. Others develop quietly for weeks before the damage becomes visible. Here's what to watch for in Long Island and NYC homes and commercial properties.
Active Leak or Burst Pipe
Any actively flowing water from a pipe, fitting, or fixture is an emergency. Shut off your main water supply and call immediately — the longer water runs, the greater the structural and contents damage to your property.
Unexplained Increase in Water Bills
A sudden spike in your water bill with no change in usage is almost always a hidden leak — inside a wall, under a slab, or in a supply line running through the yard. These leaks cause significant structural damage long before they become visible.
Slow or Recurring Drain Clogs
A drain that clogs repeatedly despite regular cleaning is signaling a deeper issue — grease buildup in the main line, a root intrusion in a sewer lateral, or a partial pipe collapse. A camera inspection identifies the cause before it becomes a complete blockage or backup.
Low Water Pressure Throughout the Building
Pressure loss at a single fixture often indicates a localized problem. Pressure loss throughout the building points to a main line issue, a failing pressure regulator, or — in older Long Island homes — galvanized pipes that have corroded to near-complete closure internally.
Renovation or Construction Plumbing Needs
Kitchen remodels, bathroom additions, basement finishing, and commercial build-outs all require licensed plumbing rough-in and trim work — with permits and inspections. Unpermitted plumbing in New York creates title issues and insurance complications that surface at the worst possible moment.
Water Heater Failure or Age
A water heater past 10 to 12 years, one that's producing discolored water, rumbling during heating cycles, or failing to maintain consistent temperature is overdue for replacement. A failed water heater that floods a mechanical room creates a property damage claim — plan the replacement before the failure occurs.
Plumbing Emergency? We're Dispatching Now.
Burst pipes and active leaks can't wait. Call us and we'll have a licensed plumber on-site within 60 minutes across Long Island — any time of day or night, including weekends and holidays.
Our Plumbing Service Process
Whether it's an emergency call at midnight or a planned renovation rough-in, our process is the same — methodical, documented, and built around doing the job right the first time.
Emergency Dispatch or Scheduled Site Visit
For emergency calls, we dispatch a licensed plumber within 60 minutes across most of Long Island and within range of the five boroughs — 24 hours a day, 7 days a week. For non-emergency work, we schedule a site visit at your convenience and arrive on time. Either way, the plumber who shows up is licensed, insured, and carries the tools and parts to address the most common plumbing emergencies without a second trip. We don't send estimators — we send plumbers.
Diagnosis & Assessment
We locate the source of the problem — using camera inspection for drain and sewer issues, pressure testing for leak detection, and thermal imaging where hidden pipe failures are suspected — and give you a clear, honest assessment of what's needed to fix it. For emergency situations, we identify and isolate the immediate problem first, then assess the full scope. For renovation and installation work, we review the existing system layout, confirm the planned configuration meets code, and identify any existing conditions that need to be addressed before rough-in begins.
Permit Filing Where Required
New York State requires a permit for plumbing work beyond minor repairs — including water heater replacements, new fixture installations, drain line modifications, and any new construction rough-in. We pull the required permits through Nassau County, Suffolk County, or NYC DOB before beginning work. Unpermitted plumbing work is a liability that follows the property — it creates problems at home sales, insurance claims, and future permit applications. We don't offer to skip permits to save time.
Plumbing Work Execution
Repairs, installations, and rough-in work are performed by licensed plumbers using code-compliant materials and methods. For emergency repairs — burst pipe sections, failed fittings, backed-up sewer lines — we carry the materials to complete most repairs on the first visit. For larger scopes — repiping projects, full bathroom rough-ins, commercial installations — we sequence the work to minimize disruption to your property, coordinating with other trades where the project requires it. Everything we install is warranted and documented.
Water Damage Assessment & Mitigation
When a plumbing failure has caused water damage to the building — and it frequently does by the time we arrive — we don't just fix the pipe and leave the property owner to figure out the rest. We assess the full extent of water intrusion using moisture meters and thermal imaging, begin immediate extraction and drying where warranted, document the damage photographically for the insurance claim, and coordinate the restoration work under the same contract. This integrated approach is what separates us from a standalone plumbing company.
Inspection & Final Testing
All plumbing work requiring a permit is inspected by the local building department's plumbing inspector before it's covered up or placed in service. We schedule and manage the inspection, address any inspector comments, and confirm sign-off before closing the job. For non-permitted repair work, we pressure test repairs and verify fixture function before signing off internally. You receive written documentation of all work performed, materials installed, and inspection results.
Insurance Coordination & Close-Out
For plumbing work that is part of an insurance claim, we provide complete documentation: the cause and extent of the plumbing failure, the scope of repair work performed, materials and labor quantities, and photographic evidence of pre- and post-repair conditions. We communicate directly with your adjuster, write scope-of-work estimates compatible with insurance industry estimating standards, and follow up to ensure the plumbing component of the claim is properly accounted for within the broader property damage settlement.
A Licensed Plumber Who Thinks About Your Whole Property
Most plumbing companies fix the pipe and move on. When the plumbing failure has caused water damage — which is the case on the majority of emergency calls we respond to — that's where the real cost is. Madison Ave Construction operates plumbing services within a full restoration and construction context, which means you're not calling three different companies to address what is fundamentally one problem.
NY State Licensed Plumbers
All plumbing work is performed by or under the direct supervision of New York State licensed plumbers. We pull our own permits and stand behind the work with proper documentation.
60-Minute Emergency Response
We respond to plumbing emergencies around the clock across Long Island and the NYC metro area — without the "emergency surcharge" that triples your bill for an after-hours call.
Insurance Claim Integration
When the plumbing failure caused water damage, we handle the full claim — plumbing repair, water extraction, structural drying, and restoration — coordinating with your carrier from the first call to the final inspection.
Residential & Commercial Capabilities
From a single-family home in Huntington to a commercial kitchen rough-in in Brooklyn — we have the licensing, equipment, and crew capacity to handle plumbing work across every property type in our service area.
Permits Pulled on Every Job That Requires Them
We don't offer to skip permits to win a job. Licensed plumbing work with proper permits and inspections protects you at resale, during insurance claims, and when the building department comes knocking.
25 Years of New York Plumbing Experience
Cast iron, galvanized, copper, PEX — the full range of materials in Long Island and NYC's building stock. We know what we're going to find before we open the wall, and we carry the parts to address it.
Plumbing Compliance in New York — What Property Owners Need to Know
New York State and New York City both regulate plumbing work extensively — for good reason. Improper plumbing installations create health hazards through cross-connections with potable water supplies, structural damage from hidden leaks, and building code violations that create legal liability for property owners. Understanding what requires a permit and what doesn't — and what happens when unpermitted work is discovered — is important context for any property owner making plumbing decisions.
The short version: anything beyond a like-for-like fixture replacement or basic faucet repair requires a permit in most New York jurisdictions. Water heater replacements, drain line modifications, new fixture installations, repiping, and all new construction plumbing rough-in all require licensed plumber permits and building department inspections. We manage this process on every project where it applies.
When Does Insurance Cover Plumbing Damage?
Standard homeowners and commercial property policies cover sudden and accidental water damage from plumbing failures — burst pipes, sudden supply line failures, and appliance malfunctions. Gradual leaks that developed over time, plumbing failures attributed to lack of maintenance, and sewage backup events are handled differently and often require specific policy endorsements. When a plumbing failure is covered, the claim should include not just the plumbing repair but the full scope of resulting water damage — extraction, drying, demolition of affected materials, and structural restoration. We document and present the complete scope.
Backflow Prevention — NYC Requirements
New York City requires backflow prevention devices on all commercial properties and many residential connections to protect the public water supply from contamination. These devices require annual testing by a licensed tester and filing of test results with DEP. Failures to maintain compliant backflow prevention can result in water service termination. We install, test, and file required backflow preventer documentation for commercial and residential properties throughout our service area.
Sewer Line Compliance & Cleanouts
Nassau and Suffolk County both have regulations governing sewer lateral maintenance and cleanout access. Properties without accessible cleanouts may be required to install them during certain permit applications or after sewer backup events. Camera inspection of sewer laterals has become standard practice in real estate transactions in the New York metro area — and for good reason. Root intrusion, pipe offset, and partial collapse are common findings in the aging clay and cast iron laterals that serve Long Island's older housing stock.
Galvanized Pipe — Long Island Repiping
A significant percentage of Long Island homes built between 1940 and 1970 still have original galvanized steel supply piping. These pipes corrode internally over decades, reducing interior diameter to a fraction of their original size, degrading water quality, and eventually failing at fittings and joints. Full or partial copper or PEX repiping restores water pressure, eliminates rust contamination, and removes the liability of aging infrastructure that is well past its service life. We perform full repiping projects on Long Island residential properties as a planned service with minimal disruption to the household.
Plumbing Services Across Long Island & NYC
We provide licensed plumbing services throughout Long Island and the New York City metro area — managing jurisdiction-specific permit requirements and responding to emergencies across our full service territory.
Long Island
Our primary service area. Emergency plumbing response, galvanized repiping, water heater replacement, sewer camera inspection, and renovation rough-in across Nassau and Suffolk County — with same-day and next-day availability for non-emergency work.
- Nassau & Suffolk County
- Emergency & scheduled service
- Residential & commercial
New York City
Licensed plumbing across all five boroughs with full NYC DOB permit management. Emergency response, commercial plumbing, renovation rough-in, and backflow preventer installation and testing in Manhattan, Brooklyn, Queens, the Bronx, and Staten Island.
- Manhattan · Brooklyn · Queens
- The Bronx · Staten Island
- NYC DOB permit filing
Westchester County
Plumbing services throughout Westchester for residential renovation projects and emergency response. Older stone and brick construction in Westchester frequently requires careful approach to existing plumbing systems — experience that we bring from decades of New York work.
- White Plains · Yonkers · New Rochelle
- Tarrytown · Mount Vernon
- Residential & commercial
North Shore & East End
Plumbing for primary residences, seasonal properties, and renovation projects across the North Shore and East End of Long Island — including winterization, spring startup, and emergency response for vacation homes that have been unoccupied during a freeze event.
- Great Neck · Manhasset · Roslyn
- Riverhead · Southampton · East Hampton
- Seasonal property services
Plumbing FAQs
Direct answers to the questions Long Island and NYC property owners ask most often about plumbing services, emergencies, and permits.
What should I do first when a pipe bursts?
Shut off the main water supply valve immediately — this is the single most important action you can take to limit the damage. The main shutoff is typically located near the water meter, in the basement or utility area, or at the street level curb stop. Once the water is off, call us. Do not attempt to dry out the area with fans or open windows before a professional has assessed the extent of water penetration — water that appears surface-level often has saturated wall cavities and subfloor assemblies that require professional extraction and drying equipment to address properly. Document the visible damage with photographs before touching anything, as this documentation supports your insurance claim.
Do I need a permit for a water heater replacement in New York?
Yes — in virtually all New York jurisdictions, a water heater replacement requires a plumbing permit and a building department inspection. This applies in Nassau County, Suffolk County, and across the five boroughs. The permit requirement exists because water heater installations involve gas or electrical connections, venting configurations, and pressure relief valve installations that have direct safety implications. A water heater installed without a permit cannot be inspected, which creates a problem when the building is sold or when an insurance claim involves the water heater. We pull the required permit on every water heater replacement we perform.
My pipes freeze every winter. What's the long-term fix?
Pipes freeze when they run through spaces that drop below 32°F — uninsulated exterior walls, unheated crawl spaces, garage walls, and attic spaces where supply lines were run without adequate thermal protection. The long-term fix depends on the location: adding pipe insulation and heat cable to exposed runs, relocating pipes away from exterior walls during a renovation, or improving the thermal envelope of the space the pipes run through. For seasonal properties on the East End and North Shore, proper winterization — draining supply lines, blowing out the system with compressed air, and setting appropriate thermostat minimums — prevents freeze damage during unoccupied periods. We provide winterization services for seasonal properties and can assess and remediate chronic freeze pipe locations as a planned project.
How do I know if I need my sewer line replaced?
A sewer camera inspection is the only way to know with certainty. Camera inspection reveals the interior condition of the pipe — showing root intrusion, pipe offset, cracks, corrosion, or partial collapse that can't be identified from surface symptoms alone. Signs that warrant a camera inspection include recurring drain backups that don't resolve after snaking, multiple slow drains throughout the building simultaneously, sewage odors in the basement or yard, and visible wet spots or lush grass growing in a line from the house to the street. Sewer line replacement is a significant project, but it's far less costly than dealing with a full sewer backup into a finished basement — which is the typical alternative when a deteriorated lateral isn't addressed proactively.
What's involved in repiping a Long Island home?
A full repipe replaces all supply piping from the main shutoff throughout the house — typically in copper or PEX tubing — and includes all branch lines to fixtures, appliances, and hose bibs. The process involves opening wall and ceiling cavities to access existing piping, removing the old galvanized or corroded copper, and installing new runs. Most single-family Long Island homes can be repiped in two to three days by our crew, with water restored at the end of each workday. Drywall patching and painting of the access locations is included in our scope. The permit is filed with the local building department, and a plumbing inspector performs a final inspection before we close the walls. Water pressure and quality improvements following galvanized repipe are typically dramatic and immediately noticeable.
Will my homeowners insurance cover a burst pipe?
In most cases, yes — sudden and accidental pipe bursts are a standard covered peril under homeowners policies. The coverage extends to the resulting water damage, not the pipe repair itself (which is typically excluded as a maintenance item). The claim scope should include water extraction, structural drying, demolition of saturated building materials, and reconstruction — not just the plumbing repair. Policy coverage does not apply to pipe failures resulting from freezing in an unheated or vacant property where the insured failed to maintain adequate heat, so heating your home appropriately during cold weather is both a practical and policy compliance matter. We document and present plumbing-related water damage claims in the format that gets them approved efficiently — we've done this alongside every major carrier operating in the New York market.
Can you handle plumbing for a full kitchen or bathroom renovation?
Yes — and doing so under the same general contractor who is managing the broader renovation eliminates the coordination problems that arise when plumbing is subcontracted to a separate company. We perform bathroom and kitchen plumbing rough-in, drain line modifications, new fixture installation, and trim-out work as part of renovation projects managed by our team. The plumbing permit is filed as part of the overall project permit package, inspections are sequenced with the construction timeline, and the plumber is coordinating directly with the framing, tile, and electrical trades rather than showing up independently. This is the way renovation plumbing should work — and rarely does when the general contractor and plumber are separate companies.
Plumbing Problem?
One Call Handles Everything.
Whether you're dealing with a burst pipe at midnight or planning a full bathroom renovation, Madison Ave Construction provides licensed plumbing services with the restoration and construction support to handle whatever comes next. Call us now or submit a request — we respond to all inquiries the same day.