Licensed · Bonded · InsuredCSLB Lic. #1062904Serving Watsonville & surrounding areas

    New Construction Plumbing in Watsonville, CA

    Rough-in to final inspection, done right the first time. JPlumbing installs complete plumbing systems for new homes, ADUs, additions, and light commercial builds across Watsonville and Santa Cruz County.

    We show up when we say we will, we build to code, and we don't hold up your schedule.

    Get a Free BidCall (831) 706-8836

    Licensed C-36 Plumbing Contractor, Lic. #1062904 · Bonded & Insured · Se habla español

    Rough-inUnderground & sewerGas linesOn schedule

    Plumbing That Keeps Your Build on Schedule

    On a new build, plumbing touches everything. If the rough-in is late, framing inspections slip. If a line is wrong, drywall comes back down. That's why builders and homeowners in Watsonville hire JPlumbing for new construction plumbing: we plan it right on paper, install it clean, test it before the walls close, and pass inspection without callbacks.

    Whether you're a general contractor who needs a reliable plumbing sub or a homeowner building an ADU in your backyard, you get the owner on your job, a written bid upfront, and a crew that communicates in English and Spanish.

    Who We Work With

    General contractors and builders who need a plumbing sub that shows up on time and passes inspection
    Homeowners building an ADU or adding a unit to their property
    Owner-builders managing their own new home or addition
    Light commercial projects like tenant improvements and small buildings

    Our New Construction Plumbing Services

    Plumbing Rough-In

    We install the drain, waste, vent, and water supply piping inside walls and floors before they close up. A clean rough-in is the foundation of every system that follows, so we lay it out to match your plans and fixture locations exactly.

    Underground and Sewer Line Installation

    We install underground drain lines and the sewer connection from the house to the city main or septic system, with correct slope and cleanouts so wastewater moves the way it should for decades.

    Water Line Installation

    New water service lines and supply piping sized for the home, so every fixture gets steady pressure, even with two showers running.

    Gas Line Installation

    Gas piping for water heaters, ranges, dryers, and fireplaces, installed, pressure tested, and inspected before anything gets connected.

    Water Heater Installation

    Tank or tankless, we install and connect the water heater as part of the build so the home is ready on move-in day.

    Fixture Installation and Finish Plumbing

    Once the finishes are in, we set toilets, sinks, faucets, showers, tubs, and appliance connections, then test every fixture for flow and leaks.

    Kitchen and Bathroom Plumbing, Including Shower Pans and Tile

    JPlumbing is licensed for both plumbing (C-36) and tile (C-54). On new construction that means we can handle the shower pan, waterproofing, and tile along with the plumbing, so you have one less sub to schedule and one company accountable for the whole shower.

    Plumbing and tile under one license. Fewer subs, fewer handoffs.

    How a New Construction Job Works With JPlumbing

    1. Plan review and written bid.

      We go over your plans and fixture schedule, flag any issues early, and give you a clear written bid. No vague estimates.

    2. Underground.

      Drain and sewer lines go in before the slab or subfloor, then get inspected.

    3. Rough-in.

      Supply, drain, vent, and gas lines are run through the framing.

    4. Test and inspect.

      We pressure test the system and get it through inspection before insulation and drywall go up. This is where hidden leaks get caught, not after the walls close.

    5. Finish.

      Fixtures, water heater, and appliance connections are installed once finishes are in.

    6. Final inspection and walkthrough.

      We test everything, pass final, and walk you through the system.

    Why Builders and Homeowners Choose JPlumbing

    Licensed and insured.

    C-36 Plumbing Contractor, CSLB Lic. #1062904.

    Owner on the job.

    You deal directly with the person doing the work, not a dispatcher.

    On schedule.

    We know other trades are waiting on us, so we show up when we say we will.

    Built to pass inspection.

    Code-compliant work the first time means no failed inspections pushing your timeline back.

    Upfront written pricing.

    You know the number before we start.

    Plumbing and tile under one license.

    Fewer subs, fewer handoffs.

    Bilingual crew.

    We communicate clearly with you and your crew in English or Spanish.

    How Much Does New Construction Plumbing Cost?

    Every build is different, so we price from your actual plans instead of guessing. The biggest factors are:

    Square footage and number of bathroomsNumber and type of fixturesGas lines and water heater type (tank vs. tankless)Distance to the sewer main or septic systemSlab vs. raised foundationFinish level of fixtures

    Send us your plans and we'll get you a free written bid with a clear breakdown, so you can budget with real numbers.

    Get a Free Bid

    Serving Watsonville and Santa Cruz County

    We handle new construction plumbing in Watsonville, Freedom, Corralitos, Pajaro, Aptos, La Selva Beach, Capitola, Soquel, Santa Cruz, Scotts Valley, Bonny Doon, Davenport, and parts of North Monterey County.

    Not sure if you're in range? Call and ask.

    Questions

    New Construction Plumbing, answered

    Still unsure? Call or text and ask. No pressure to book.

    (831) 706-8836

    A complete plumbing system: underground drain and sewer lines, rough-in for water supply, drain, and vent piping, gas lines, water heater installation, and final fixture installation. Everything needed to bring water in, take waste out, and pass inspection.

    For a typical single-family home or ADU, rough-in usually takes a few days to a week depending on size and layout. The full plumbing scope happens in phases that follow your build schedule, from underground through final fixtures.

    Yes, we can pull the plumbing permit or work under your general contractor's permit, whichever fits your project. Either way, we schedule and attend the plumbing inspections.

    Yes. A lot of our new construction work is as the plumbing sub for builders. We coordinate with your schedule and other trades so plumbing never becomes the bottleneck.

    Yes. ADUs are some of the most common new builds we see in Santa Cruz County, including tying the new unit's water, sewer, and gas into the existing property.

    We handle light commercial work like tenant improvements and small buildings. Call us with your plans and we'll let you know if it's a fit.

    Sí. Our crew speaks English and Spanish, so communication with you and your workers is never a problem.

    Other services

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    Fill out the form and we'll get back to you today. It takes less than a minute.

    What happens next:

    1. We reach out the same day. By call or text, whichever you prefer, in English or Spanish.
    2. We ask a few quick questions. So we show up with the right parts and a real arrival window.
    3. You get your price in writing. One price for the whole job before any work starts. You decide, no pressure.

    Licensed & insured · CSLB Lic. #1062904 · No obligation

    Water leaking right now? Shut off your main water valve and call or text (831) 706-8836 instead. Calls are the fastest way to reach us.

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