The Most Active Plumbing Contractors in New York City, 2026

AMERICAN STANDARD P&H COR filed the most plumbing permits in New York City in the four months from late February to the end of June 2026, with 125 of the 2,652 issued in the period. A&A PLUMBING CORP and CATMAN PLUMBING INC follow with 64 and 62. Below is the full ranking of the top 25, drawn from the New York City Department of Buildings's permit record and counted without weighting.

The 25 most active plumbing contractors in New York City

Ranked by the number of plumbing permits issued to each firm by the New York City Department of Buildings between 27 February and 30 June 2026. Share of market is that firm's permits as a percentage of all 2,652 plumbing permits in the period.

The full field is 482 firms. The 25 listed here account for 34.6% of every plumbing permit issued; the rest is a long tail, and 151 of the 482 firms filed exactly once in the period.

How concentrated the plumbing market is

This is a fragmented market. Ten firms out of 482 hold only 20.7% of the permits, so a strategy built on the top of the table reaches a small minority of the work. The busiest single firm holds 4.7% on its own, and 31% of the 482 firms in the record filed exactly one permit in the period, which is the usual shape of a permit long tail: a small number of production contractors, and a large number of firms doing occasional or single-property work.

What a permit count measures, and what it does not

A permit count is a measure of filing frequency. It is the closest public proxy for how much work a trade contractor is currently taking on, and it has the useful property of being impossible to inflate: a permit costs money and creates an inspection obligation, so nobody files one for marketing reasons.

One more limit worth stating plainly: a firm that subcontracts under someone else's license does not appear here at all, and a firm that pulls permits on behalf of others appears larger than it is. The record names whoever signed, which is not always whoever did the work.

How to use this list

If you sell to plumbing contractors

This is a prospect list ordered by demonstrated buying capacity. A plumbing contractor filing 125 permits in six months is consuming materials, equipment, labor and subcontracted services continuously, and the permit record proves it in a way a company website cannot. Start at the top, and use the last-filed date to skip anyone who has gone quiet.

If you are a general contractor or developer looking for capacity

Volume is a capacity signal, not a quality one, so treat the ranking as a shortlist to check rather than a recommendation. The firms near the top are demonstrably able to run several permitted jobs at once. Verify license standing and references separately; this page reports what was filed, not how it went.

If you are a plumbing contractor yourself

This is your competitive set, measured rather than guessed. The share-of-market column tells you what a realistic position looks like in New York City: the busiest firm holds 4.7% of all plumbing permits, which means even the leader competes for most of the work.

How this ranking was built

The counting is deliberately plain. There is no weighting by job size, no adjustment for permit type, and no editorial ordering. Two firms with the same number of permits are ranked alphabetically, and the only judgment applied anywhere is deciding when two differently punctuated names are the same company.

That last judgment is where the errors would live, so it is made conservatively. Punctuation and spacing are normalized, which merges ARNOLD J. ELECTRIC INC with ARNOLD J ELECTRIC INC. Legal suffixes are not touched, so a firm filing as an Inc and an LLC stays as two entries: they can genuinely be two companies, and merging them would be a worse mistake than leaving them apart.

Where the names in this table come from

New York City's Department of Buildings names the licensed contractor on each trade filing. Two limits shape what you can read off this page.

• The department truncates business names in its published export, usually at about twenty-four characters, which is why entries read ABCO-PEERLESS SPRKLR CORP and AMERICAN STANDARD P&H COR. The names are reproduced exactly as filed rather than expanded, because expanding an abbreviation is a guess at which company is meant.
• New York City filings enter this record set from late February 2026, so the period covered here is roughly four months rather than a full half-year. The counts are real; they are simply counts over a shorter window than the Austin and Miami-Dade pages, and are not comparable to them.

Permits are a record of work already awarded

Everything above describes work that has already been won. A permit is issued after the contract is signed, which makes this page an excellent map of who is active and a poor list of what to bid on. The buying decision for most trades lands around a third of the way through a build, at framing, well before the trade permit is filed.

That is the distinction Builtie is built around: watch the project record from the planning and permit stage forward, identify the developer or general contractor behind it, and reach the person who decides your scope while the package is still open. When to contact each trade sets out the timing by discipline, and construction leads in New York City covers what the platform tracks in this market.

Builtie plans start at $550 per month per seat for 50 matched projects a month, and $880 for 200. Every plan includes done-for-you LinkedIn and email outreach, and there is a 7-day free trial with 10 projects.

Rankings for the other trades and cities

• Most active fire protection contractors in New York City
• Most active plumbing contractors in Austin
• Most active plumbing contractors in Miami-Dade

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