Commercial plumbing in New Jersey is the same trade as residential, done under tighter rules and on a clock. Call (201) 676-3099 or book a free estimate.
Commercial plumbing in New Jersey is the same trade as residential, done under tighter rules and on a clock. A restaurant with a backed-up grease line loses money every hour it is closed. A salon with no hot water cannot open. This guide covers what commercial plumbing work costs in NJ, which jobs need a permit and inspection, and how to get the work done without shutting your doors.
First Call handles commercial plumbing for restaurants, salons and spas, medical offices, small retail, and mixed-use buildings up to a few stories. The rule is the same as our homes: one written price, one crew, no surprise change orders.
Common commercial plumbing jobs and 2026 NJ prices
Every number above depends on access, hours and how old the building is. Night and weekend work costs 15 to 25 percent more but keeps you open, and for most businesses that is cheaper than a lost day.
| Job | Typical price |
|---|---|
| Grease trap or interceptor cleaning | $250 – $600 per service |
| Commercial drain and main line jetting | $450 – $1,200 |
| Commercial water heater, tank, replace | $3,500 – $9,000 |
| Tankless or high-recovery water heater | $5,500 – $14,000 |
| Backflow preventer install or annual test | $150 – $350 test · $1,200 – $3,500 install |
| ADA restroom plumbing rough-in and fixtures | $4,500 – $12,000 |
| Bathroom addition for a storefront | $12,000 – $30,000 |
| Floor drain or trench drain install | $1,500 – $6,000 |
What needs a permit in NJ
New Jersey requires a plumbing permit for any new fixture, any water heater, any backflow device, and any change to drain, waste or vent piping. Like-for-like repairs of a faucet or a valve usually do not. Your town's construction office issues the permit and inspects the work. We pull the permit under our license and meet the inspector. If a contractor tells you a new water heater does not need a permit in NJ, that is your sign to call someone else.
Backflow testing: the yearly bill every business forgets
Most NJ water utilities require any commercial account with a backflow preventer to have it tested every year by a certified tester and the results filed. Miss it and you get a shutoff notice. We test, tag and file the paperwork in one visit, and we can put you on a yearly reminder so it never lapses.
How we keep you open
- We schedule around your hours: before open, after close, or a slow weekday.
- For restaurants we stage the work so at least one sink and one restroom stay live.
- Grease and jetting work is done from the outside cleanout when the building has one.
- Emergency commercial calls get the same 24/7 line as homes. Ask for the commercial dispatcher.
- One written price per job. Maintenance customers get a flat monthly rate.
Which businesses we serve
- Restaurants, cafés, bakeries and bars
- Salons, barbershops, med spas and IV clinics
- Dental and medical offices
- Gyms, daycares and schools
- Small retail and storefronts
- Mixed-use and multi-family buildings up to four stories
- Property managers and landlords with several buildings
Questions people ask next
Do you offer commercial plumbing maintenance contracts in NJ?
Yes. A typical plan covers quarterly drain jetting, grease trap service, annual backflow testing and priority emergency response for a flat monthly fee. It is usually cheaper than two emergency calls a year.
Can you work at night so we don't close?
Yes. Most of our commercial work is done before open or after close. Night and weekend rates run 15 to 25 percent above daytime.
Are you licensed for commercial work?
All plumbing at First Call is done under a New Jersey licensed master plumber, which is required for both residential and commercial work. We are insured for commercial jobs and can send a certificate of insurance to your landlord.
How fast can you respond to a commercial emergency?
Same as residential: a truck is moving within the hour across Bergen, Passaic, Hudson, Essex and Morris. Tell the dispatcher it is a business so we send the right stock.
Do you handle the permit and inspection?
Yes. We pull the permit under our license, schedule the inspector and meet them on site.
Need a licensed contractor near you?
If you searched “licensed contractor near me” anywhere in New Jersey, that's us. First Call Contracting is based in Paramus and sends its own licensed crew to all 21 counties — written price before work starts, no deposit, a real person on the phone 24/7.
Need a commercial plumber who shows up on your schedule?
Tell us the business, the town and the problem. We price it in writing and work around your hours.
Or call Alex direct: (201) 676-3099