City · NYC Department of Buildings (DOB)
Master Plumber license
Plumbing work in the five boroughs is done under a DOB licensed master plumber.
Plumbing website design in New York.
What a plumbing website in New York has to show: the license rules that apply, the counties you can serve, and a free audit of the site you have now.
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- Businesses
- 7,640
- Counties
- 22
- License rules
- 1
Businesses: plumbing, heating and air-conditioning contractors with paid staff in the New York-Newark-Jersey City, NY-NJ metro. Census County Business Patterns, 2023. Counties: Census metro and county estimates, 2024.
License
Your license.
What New York asks of a plumbing business, and where your website comes in.
Checked 2026-10-05 at each source. Not legal advice: rules change, so check with the board before you rely on one.
On your website
Put the number in the footer of every page and beside every quote form, under the business name it is issued to. No rule we found asks for it on an ad here. It is still the first thing a careful customer checks.
Your business nameMaster Plumber licenseyour number
Service area
Your map.
The New York-Newark-Jersey City, NY-NJ metro: 22 counties in 2 states.
The licenses here are New York City rules, for work in the five boroughs. The metro also takes in Long Island, Westchester, Rockland and Putnam, and northern New Jersey, each with rules of its own.
Census metro and county estimates, 2024Census County Business Patterns, 2023, by county
Plumbing, heating and air-conditioning contractors with paid staff, by county, 2023.
- SuffolkNY
- 1,089
- QueensNY
- 945
- Kings (Brooklyn)NY
- 784
- NassauNY
- 690
- WestchesterNY
- 493
- BergenNJ
- 430
- OceanNJ
- 339
- MonmouthNJ
- 338
- MiddlesexNJ
- 277
- BronxNY
- 267
- MorrisNJ
- 248
- Richmond (Staten Island)NY
- 243
- New York (Manhattan)NY
- 216
- PassaicNJ
- 215
- UnionNJ
- 207
- EssexNJ
- 200
- RocklandNY
- 191
- SomersetNJ
- 117
- PutnamNY
- 99
- SussexNJ
- 91
- HudsonNJ
- 90
- HunterdonNJ
- 71
Free audit
Check your site.
Type your website and get a plain report, written for plumbing businesses. Then compare it with the license and service area notes above.
Written for plumbing businesses.
- Contact
- Phones
- Trust
- Search
- Speed
Every finding is something we measured on your site. Nothing is guessed.
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Then 7 days to pay, 10% off if paid within the first 48 hours.
More pages
Keep going.
Everything a plumbing site needs, wherever you work, is on one page.
Plumbing, the full pageMore in New York
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