Rockville Centre licenses its own plumbers and accepts nobody else’s — and runs its own electric utility, so a service upgrade here goes through the Village rather than PSEG. We hold the Village licence.
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631-587-0085WE ANSWER EVERY CALLRockville Centre runs its own everything. Its own water since 1895, its own electric utility since 1898, its own sewer collection since the 1920s — and its own plumber licensing, through a three-member Plumbers’ Examining Board of master plumbers with at least ten years in the trade. The Village Code puts it plainly at § 115-15A: no person shall do any plumbing work within the Village unless licensed by the Village of Rockville Centre, with insurance on file with the Superintendent of Buildings.
That is stricter than it first sounds. A licence from anywhere else does not substitute. Under § 115-15B the most an outside licence can do is waive the *examination* on an application for a Village licence — and only where the other municipality keeps equal standards and has agreed in writing to reciprocate. The Village still issues its own card either way. NJM went and got it. Rockville Centre is the one incorporated village where we hold the village’s own plumber licence rather than working from a town credential.
It is a small, dense, fully built-out place — about 26,000 people in 3.25 square miles, roughly three quarters owner-occupied, and a housing stock weighted heavily toward the pre-war and 1940s end with essentially nothing built since 2010. Old houses, close together, on municipal utilities that answer to the Village rather than to a regional operator. All three of those change how a job gets planned.
Master PlumberLicensed to pull permits
TASK 86/87Certified for gas work
Navien NSSFactory-trained on tankless22+ years on Long Island · Plumbing, heating, cooling, gas and contracting under one roof
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.
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.
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.
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.
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.
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.
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.
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.
Rockville Centre does several things its own way. None of these are obstacles once you know about them — they are only obstacles when nobody mentioned them.
Chapter 256 of the Village Code is titled "Plumbing" and contains no sections at all, just a note pointing elsewhere. The licensing actually lives at § 115-15, inside Building Code Administration. Worth knowing if you ever go looking for the rules yourself, because the obvious chapter is a dead end.
The Village requires a notarised owner affidavit certifying "there will be no plumbing work of any nature whatsoever" where a building permit application does not come with a plumbing permit. There is a parallel affidavit for electrical. It is a genuinely unusual requirement and it means plumbing scope has to be settled at application, not discovered mid-job.
The Village gas permit application states it in capitals — a gas test is required on all gas piping. The plumber signing it attests to being the plumber of record who will perform the work. Build the test into the programme rather than treating it as a formality at the end.
§ 271-1 prohibits the construction, use and maintenance of any private sewage disposal system, existing or proposed. The Village operates as a collection district and pumps to a Nassau County plant. If you are in the Village you are on the sewer, which removes a whole category of uncertainty that exists elsewhere in the county.
Nassau County’s assessment puts about 3.3% of improved property value in the 100-year flood zone — very low for a south-shore Nassau community. If someone is selling you flood-elevation mechanical work in Rockville Centre, ask which map. The one caveat: the same table shows hurricane storm surge reaching a far higher share, so surge and the 100-year floodplain are not the same conversation.
§ 318-4 requires all commercial and industrial water-operative systems, refrigeration and water-cooling equipment to be fitted with a water-recycling system. That is a design constraint on commercial mechanical work here, and it is easier to meet at specification than at inspection.
Everywhere else in Nassau and Suffolk, an electrical service upgrade means a process with PSEG Long Island. In Rockville Centre it means a process with the Village Electric Department on Maple Avenue — and § 115-26A of the Village Code makes compliance with the Village utility’s own rules and regulations a code requirement, not a courtesy. Work has also to be filed with and approved by an inspection agency the Village Board has specifically approved, and an inspector may not inspect anything they have a direct or indirect affiliation with.
The Village publishes its service requirements, and several of them catch people out. The electrician has to file for the Buildings Department electrical permit, submit an Authorization to Install Service and collect the Electric Department directive. A load letter is required for every service upgrade. Only copper is accepted — no aluminium. Any underground service of 200 amps or more requires a site meeting with the department to coordinate before installation. EV charging stations need a separate request to the Electric Department for review and approval.
Why this decides whether your project is straightforward or not. A heat pump, a whole-house air conditioning system or a modern induction kitchen can all push an older Rockville Centre house past its existing service capacity. In a village this age, plenty of houses are still on a service sized for a household with none of those things. The load letter is where that gets established — and finding out at load-letter stage is a scheduling problem, whereas finding out after the equipment is on site is an expensive one.
So on anything electrical-adjacent here we sequence backwards from the utility. Establish what the service can carry, get the Village’s approval path started, then order equipment. That is the opposite of how these jobs are often run, and it is the single biggest reason a mechanical project in Rockville Centre slips. If you are getting quotes for a heat pump or central air in the Village and nobody has mentioned the service, that is worth asking about before you sign anything.
A village stock weighted to pre-war and 1940s construction, on more than seventy miles of Village water main. We locate properly before opening plaster.
The Village owns and operates the collection system and prohibits private disposal outright. Only a Village-licensed plumber or licensed drain layer may carry on drain laying here.
Older houses here often run hot water or steam to radiators. Installation, service, and an honest view on what is worth keeping rather than replacing.
The Village runs a separate gas permit signed by the plumber of record, and requires a gas test on all gas piping. TASK 86/87 certified.
Sequenced around the Village Electric Department’s service and load process rather than into it at the last minute.
Gas, oil and propane, including high-efficiency tankless. Navien NSS certified.
One licensed team across plumbing, gas, mechanical and the building work — in a village where the plumbing permit and the building permit are filed separately and both are ours.
Every day of the year. We hold the Village licence, so an emergency here does not become a question about who is allowed to file the paperwork afterwards.
What it says on the coupon is what comes off the bill. Mention it when you call.
Both, and here the Village one is what counts. § 115-15A says no person shall do any plumbing work within the Village unless licensed by the Village of Rockville Centre, with insurance on file with the Superintendent of Buildings. An outside licence does not substitute — under § 115-15B the most it can do is waive the examination when you apply for the Village licence, and only where that municipality has agreed in writing to reciprocate. The Village still issues its own. So "licensed on Long Island" means nothing at your address; "licensed by the Village" is the question, and the answer is yes.
The electrical side, and it is worth getting in the right order. Rockville Centre has run its own municipal electric utility since 1898, so a service upgrade goes through the Village Electric Department rather than PSEG Long Island, and the Village Code makes compliance with that department’s rules a code requirement. Your electrician files for the Village electrical permit, submits an Authorization to Install Service, and provides a load letter for the upgrade. Copper conductors only. Underground services of 200 amps or more need a site meeting with the department first. None of that is difficult — it just has to start before equipment is ordered, not after it arrives.
Almost certainly not, and we would rather tell you that than sell you one. The Village’s own 2025 water quality report puts total hardness at 3.1 to 30.7 mg/L — very soft, and at the opposite end of the county from Great Neck and Port Washington, which publish figures around 173 to 174. What is worth knowing instead is that the Village adjusts the pH of the pumped water upward with lime or sodium hydroxide, because the raw groundwater here is on the acidic side. Soft, slightly acidic water is easier on your skin and harder on old pipe and old fittings. In a house of this vintage that is the more useful thing to be thinking about, and it is a repiping and fittings question rather than a softener one.
The Village’s 2025 report puts 1,4-dioxane at not-detected to 0.23 micrograms per litre against a state limit of 1.0, and states that PFOA and PFOS were not detected in the source water during 2025. Water comes from ten wells averaging around 540 feet into the Magothy aquifer, with chlorination, pH adjustment and iron removal. That is a better position than several districts elsewhere in Nassau that are currently building advanced oxidation or carbon treatment. Read the Village report yourself rather than taking our word for it — it is published annually and it is free.
Because the Village requires one. If a building permit application does not come with a plumbing permit, the owner has to file a notarised affidavit certifying there will be no plumbing work of any nature whatsoever, and acknowledging that a separate plumbing permit must be obtained if plumbing is added later. There is a matching affidavit for electrical work. It is unusual and it is actually sensible — it forces the scope conversation to happen at the start. Practically, it means telling us up front if a renovation might touch a pipe, so the right permit goes in rather than an affidavit that has to be undone.
Usually yes, with ductless. One outdoor unit runs several indoor heads on individual thermostats, with no ducts to route through plaster walls and no attic work in a house whose attic may not welcome it. It heats as well as cools, which gives you shoulder-season heat without firing the boiler for the whole house — useful in a village of older, well-built houses that hold their heat unevenly. Where there is somewhere sensible to run ducts we will price that too. We install both, so nothing pushes us either way except what suits the house.
The Village Building Department at 110 Maple Avenue handles the plumbing and building side. Electrical is different and worth knowing about: § 115-26 requires electrical work to be inspected by an agency specifically approved by the Village Board of Trustees, carrying substantial liability cover with the Village named, and an inspector may not inspect work they had any direct or indirect affiliation with. Inspection requests go to that third-party agency directly and carry their own fee. We handle the coordination; the point is that it is a separate track from the Building Department, and jobs slip when someone assumes it is not.
It is, and the licence is the proof rather than the claim. Rockville Centre does not accept anybody else’s plumber licence, so being on the Village register is not something a contractor drifts into — you apply, you satisfy the Examining Board, and you refile your insurance with the Superintendent of Buildings every year to keep it. We did that deliberately. Call 631-587-0085 and we will be straight about scheduling from Suffolk rather than optimistic about it.
Based in North Babylon, working across both counties — close enough to get there fast, local enough to know the housing stock and the permit offices.
Proudly serving all of Nassau and Suffolk County, with deep local roots near our North Babylon home base.
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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.
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
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.
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