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NJM Mechanical & Contracting

Plumbing, Heating & Cooling In Lindenhurst

Lindenhurst is an incorporated village, so permits run through the Village rather than the Town — a detail that catches out contractors from further afield. Much of the south end also sits in the flood zone, which shapes how mechanical equipment should be installed.

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Lindenhurst

Plumbing, Heating & Cooling In Lindenhurst

Lindenhurst is an incorporated village of roughly twenty-seven thousand people in three and three-quarter square miles, and it runs its own building department at 430 South Wellwood Avenue — with its own Plumbing Inspector on a direct line, which is unusual for a village this size and tells you something about how it handles this work.

The housing is older than most of what surrounds it. The Village own downtown analysis puts forty per cent of all housing units in the 1950s and around two thirds before 1960, with sixteen per cent predating 1940 — Lindenhurst was founded in 1873 and incorporated in 1923, long before the tract building that shaped the hamlets north of it. Seventy-eight per cent is detached single-family and fifteen per cent is two-family, which matters more than it sounds, for reasons in the FAQs below.

And it is on county sewer, which our own home hamlet is not. That single difference changes what a drain problem is.

24/7 Emergency ServiceLicensed & Insured
  • Master PlumberLicensed to pull permits
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  • Navien NSSFactory-trained on tankless

22+ years on Long Island · Plumbing, heating, cooling, gas and contracting under one roof

Before you call

Two kinds of visit. You’ll know which before we come.

We don’t charge to quote a job. We do charge to find a problem nobody has identified yet. Which one you need — and what it costs — gets agreed on the phone, so nothing about the cost is a surprise on the doorstep.

Estimate visitNo charge

You already know what you want done

A boiler replaced, a bathroom rebuilt, a gas line run. We come out, look at the job and give you a number.

No obligation
Diagnostic visitQuoted on the call

Something has failed and nobody knows why

A licensed technician and the time to find what has actually gone wrong. One rate across plumbing, heating, cooling and gas, and one number to reach us on — there is no separate line to find at midnight. You get the figure before anyone is dispatched, and after-hours, weekend and holiday work is quoted the same way.

The rate you are told is the rate

You get the number on the phone, before anyone is dispatched, and it is what you are charged when the technician arrives. One rate across all four trades — plumbing, heating, cooling and gas.

What it pays for

A licensed, insured technician carrying the certifications the work needs, and the time to find what has actually failed — not a quick look and a guess.

Watch for the bait and switch

A call-out advertised at almost nothing gets recovered once someone is standing in your basement. Get the number before anyone travels — from us, or from anyone else you call — and hold them to it when they arrive.

Financing on larger jobs

A boiler that fails in January is not a purchase anyone planned. Financing is available on the big-ticket work, so a system replacement does not have to come out of savings in one go.

What it is normally used for

Boiler, furnace and water heater replacement, a full air conditioning system, a whole-house repipe, sewer and water main work, and larger contracting jobs — kitchens, bathrooms, dormers and extensions.

When to bring it up

At the estimate, before anything is scheduled. It is worth asking even if you think you will not need it, because knowing it is there changes what you are willing to consider fixing properly.

What it does not change

The price of the job. The quote is the quote whether you finance it or not — and on a straightforward repair it is usually not worth the paperwork. We will tell you which one you are looking at.

Financing provided throughSynchronyCredit is extended by Synchrony. Subject to credit approval.
Call 631-587-0085Not sure which one you need? Call and describe it — we will tell you before we book anything.
Chapter 134

In Lindenhurst, Your Boiler Needs A Plumbing Permit

Not a building permit. The Village writes its own plumbing law, licenses its own plumbers to work under it, and puts heating equipment inside it — so the paperwork on a heating job here is different from anywhere else in the Town.

Village Code Chapter 134 is the whole story. It creates a three-member Plumbers Examining Board appointed by the Village Board, and § 134-5 states plainly that no person shall engage in the business of plumbing within the Village until they obtain a licence from that Board. Applicants sit a written examination within six months, and the code writes the insurance into itself — workers compensation on file, public liability at five hundred thousand dollars each person and a million each accident, property damage at a hundred thousand.

Then look at what the Village plumbing permit actually covers. The form lists floor drains, water service, sewer connections, fire sprinklers, backflow valves — and also heating equipment in oil, gas, steam, hot water and warm air, fuel oil storage tanks, hot water storage tanks, chimney liners, fusible fire valves and safety relief valves. It is signed by a Master Plumber with a licence number and approved by the Plumbing Inspector, and it runs through four inspection stages: roughing inspected, roughing tested, flange inspected, final.

Read those two together and the practical answer falls out. A boiler, a furnace, a water heater, an oil tank or a chimney liner in Lindenhurst is permitted work under Chapter 134, filed by a plumber the Village itself has licensed, and inspected four times by the Village Plumbing Inspector. A contractor who treats it as a routine building-permit job is filing the wrong thing with the wrong department.

And the permit exemption is narrower than people assume. § 134-27 allows repairs to existing plumbing and drainage without a permit, then expressly excludes new soil, waste or vent pipes, connecting additional fixtures to existing waste pipes or main house drains, and the replacement of existing fixtures with others. A like-for-like fixture swap is outside the exemption here, exactly as it is in the Town.

Quick Rules Of Thumb

  • The Village licenses its own plumbers through its own Examining Board
  • Heating equipment, oil tanks and chimney liners sit on the PLUMBING permit
  • The application must be filed by a licensed plumber, not by the owner
  • Four inspection stages: roughing inspected, roughing tested, flange, final
  • Replacing an existing fixture is not a permit-exempt repair
  • Building Department 631-957-7510 · Plumbing Inspector 631-957-7517
Talk It Through — 631-587-0085
What We Do Here

Services In Lindenhurst

Gas Lines & Inspections

TASK 86/87 certified gas work — new lines for ranges, dryers, generators and heating equipment, plus pressure testing and code compliance.

Renovations

Kitchens, bathrooms and additions with the plumbing, gas and HVAC handled by the same licensed team rather than three companies waiting on each other.

Boilers, Furnaces & Oil Tanks

Installation, replacement and repair across gas, oil and high-efficiency heating — all of it permitted work under Chapter 134 in this village, including the fuel oil tank and the chimney liner if the job needs them.

Water Heaters, Including Tankless

Gas, electric and tankless. Navien NSS certified, so high-efficiency units are commissioned to spec and the manufacturer warranty stays intact. In a basement with a flood history a wall-mounted tankless sits above shallow water by default, which is worth a conversation rather than an assumption.

Sewer Connections

The Village wrote a whole article for these. Once a valid Suffolk County sewer connection permit is presented, § 134-44 waives the Village plumbing and street-opening permits and their fees — but the interior plumbing must still be done by a Village-licensed plumber and inspected by the Village within thirty days.

Cesspool Decommissioning

Where a cesspool or overflow pool is taken out of use after a sewer connection, § 134-41 requires it to be promptly emptied, cleaned and backfilled with earth, sand or other acceptable clean material. It is not enough to stop using it.

Elevated & Relocated Mechanicals

Moving a boiler, water heater or air handler up out of harm, and siting outdoor equipment for a low-lying property. On the waterfront streets this is the difference between a system that survives a spring tide and one that does not.

Drains, Backups & Backflow Valves

Blocked drains and sewer backups cleared for homes and businesses, 24/7. In the mapped flood zone the Village flood code requires automatic backflow valves on sanitary sewage systems — the thing that stops the bay arriving through the fixtures.

Central Air & Ductless

Full systems where the house supports ductwork, ductless mini-splits where running ducts through a 1950s house would mean opening up finished space. Condenser siting gets the flood question asked before anything is ordered.

24/7 Emergency Service

A few minutes south of the shop, answered every hour of every day. If a storm has put water where the boiler is, that is the call we are set up to take.

Common Questions

Frequently Asked Questions

Who issues permits in Lindenhurst, and what kind of permit does a boiler need?

The Village, not the Town of Babylon — Lindenhurst is incorporated and runs its own Building Department at 430 South Wellwood Avenue. The part that surprises people is which permit. Under Village Code Chapter 134 the plumbing permit covers heating equipment in oil, gas, steam, hot water and warm air, plus fuel oil storage tanks, hot water storage tanks and chimney liners. So a boiler here is permitted plumbing work, filed by a licensed plumber and inspected by the Village Plumbing Inspector, rather than a routine building-permit job. Building Department 631-957-7510, Plumbing Inspector 631-957-7517.

Does Lindenhurst really license its own plumbers?

It does, and it is worth knowing before you hire anyone. Chapter 134 creates a three-member Plumbers Examining Board appointed by the Village Board, and § 134-5 says no person shall engage in the business of plumbing within the Village until licensed by that Board. Applicants sit a written examination and carry insurance the code specifies down to the figures. § 134-27 then requires the permit application itself to be filed by a licensed plumber — an owner cannot file it. If you are getting quotes, asking which licence a contractor holds for this village is a fair question.

How many inspections does a plumbing job here get?

Four, and they are named on the Village permit form: roughing inspected, roughing tested, flange inspected, and final. It is worth building that into the schedule rather than discovering it, because the wall cannot close until the roughing stages are signed off.

I am connecting to the sewer. What does the Village need?

Less than you would expect, which is unusual and worth knowing. Under § 134-44, once you present a valid Suffolk County sewer connection permit to the Village, no other Village permits for plumbing or street opening are required and the fees for them are waived. The exterior work is inspected by Suffolk County. What the Village still requires is that the interior plumbing be done by a plumber it has licensed, and inspected by the Village plumbing inspector within thirty days of completion — before the property transfers. Street openings need forty-eight hours notice and restoration within thirty days.

We just went on the sewer. Can we leave the old cesspool in the ground?

Not as it is. § 134-41 requires that where cesspools or overflow pools are discontinued after a sewer connection, the owner shall have them promptly emptied, cleaned and backfilled with earth, sand or other acceptable clean material. An abandoned pool left intact is both a code problem and a collapse risk in a yard people walk on.

We own a two-family. Does that change the plumbing?

It can, and Lindenhurst has an unusual amount of it — about fifteen per cent of the housing stock. § 134-36 requires the plumbing system of each building to be separately connected to the sewer, and § 134-35 requires connection wherever an accessible public sewer runs in the street abutting the lot. The Village also runs its own two-family permit process through the Building Department, with renewals and periodic public hearings. Worth establishing what you actually have before any drain work is scoped.

My basement has flooded before. Where can the boiler go?

Higher than you may think, and there is a gap in the rules worth understanding. Village Code § 91-16C requires new and replacement electrical, heating, ventilating, air conditioning and plumbing service equipment in a mapped flood zone to be at or above base flood elevation, or designed to keep water out entirely. But § 91-17 requires the lowest floor, basement included, to be at base flood elevation plus two feet. Meeting the letter of the equipment rule can still leave a boiler two feet below the elevation the code demands of the floor beside it. Where the budget allows we would rather site equipment to the higher of the two, because the code is a minimum and the water does not read it.

How much flooding does Lindenhurst actually get?

Enough that it should shape the job. The Village annex to the Suffolk County Hazard Mitigation Plan records that it joined the flood insurance programme in 1977 and, as of July 2020, held 1,121 policies against 2,728 losses, with more than ninety-five million dollars paid out and four hundred repetitive loss properties — in a village of under four square miles. Superstorm Sandy flooded roughly 1,300 homes here and 180 were declared substantially damaged; over 300 have since been elevated and 41 bought out. The annex also notes more than four thousand buildings in areas prone to flood damage.

Which streets go under first?

The National Weather Service publishes coastal flood impacts for Lindenhurst by water level, and it is more useful than any general warning. Bulkhead overtopping starts around 3.2 feet. At 3.5 the lower Venetian Shores homes flood and roads near the water become close to impassable. At 3.9 there is a foot or more on Seacrest Avenue, Lido Promenade and East Shore Road. By 4.3 it is moderate to major on Venetian Boulevard and Bay Place. If your address is on that list, an outdoor condenser at grade or a boiler at basement floor level is under water well before a named storm — and that is an argument for siting, not for panic.

Is Lindenhurst on sewer or cesspools?

Sewer. The Village has an entire code article for connections to the Suffolk County Southwest Sewer District, and it is absent from the County list of unsewered communities studied for sewer expansion — which North Babylon, West Babylon and Deer Park are all on. That is a real difference between here and the hamlets a few minutes north: in Lindenhurst a drain problem is a drain problem, not a cesspool question.

Do I need a permit just to swap a fixture?

Very likely. § 134-27 allows repairs to existing plumbing and drainage without a permit, but expressly excludes new soil, waste or vent pipes, connecting additional fixtures to existing waste pipes or main house drains, and the replacement of existing fixtures with others. A like-for-like swap falls outside the exemption. We would rather tell you that now than have an inspector tell you later.

How quickly can you reach Lindenhurst?

We are at 31 Magro Drive in North Babylon, a few minutes north. For emergency calls that is close. We answer 24 hours a day, every day of the year — 631-587-0085.

Do you work on both homes and businesses in Lindenhurst?

Both. Homes across the village, and the shops and restaurants along Wellwood Avenue and the commercial streets. Commercial jobs get the same licensed crew and the same response.

Are estimates free?

Yes, free and with no obligation. We finance through Synchrony, subject to credit approval. Call 631-587-0085, or use the form on this page and we will be in touch within 24 hours.

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What Long Island Says

Reviews From Homes & Businesses We've Served

5 out of 5 stars

The experience I had with with NJM Mechanical & Contracting was a pleasant one. I had the pleasure of doing business with Neil. The work I had done was a basement entrance to my yard and it came out wonderful. The work performed as well as the communication is 10/10.

Nick UrziaJune 2026
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5 out of 5 stars

Neil has handled all my A/C needs over the years. He's very communicative and open about service charges. He never steers you wrong

Jim JacksonMay 2026
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5 out of 5 stars

As always, Neil is a pleasure to have as my plumber. He is so professional and knowledgeable. I wouldn't use anyone else! I highly, highly recommend him.

Fritzi R.May 2026
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