Kitchen plumbing encompasses more than just the sink. A modern kitchen remodel may involve relocating the sink to a new island position (which requires moving both drain and supply), adding a pot filler at the range (a dedicated water line run through the wall to a wall-mount faucet above the stove), connecting a new dishwasher (supply, drain to disposal, and sometimes an air gap per California code), and installing or upgrading a garbage disposal. Each of these items has specific code requirements in California and specific sequencing requirements in a remodel — rough-in must be done and inspected before cabinetry is installed and before the countertop goes in.
Sink relocation is one of the most requested kitchen remodel plumbing tasks. Moving a sink from a perimeter wall to a kitchen island dramatically changes the drain routing — island drains require a different venting approach (an air admittance valve or an island loop vent per California code) and the drain must slope correctly across a longer run beneath the floor. We do this work correctly so the drain flows freely and doesn't create the gurgling or slow-drain problems that come from improperly installed island plumbing.
For kitchen remodels in older Southern California homes, we also handle the supply line upgrades that make sense while the kitchen is already open. Galvanized supply lines behind original kitchen cabinets in pre-1985 homes often show significant internal corrosion. Replacing them with PEX during a kitchen remodel adds minimal cost versus doing it as a standalone project after everything is put back together.
Signs You Need Kitchen Plumbing Now
- ✕Slow kitchen sink drain that worsens after cooking — grease buildup in the drain line
- ✕Dishwasher leaving standing water — a drain connection or air gap issue that needs to be corrected
- ✕Garbage disposal that leaks from the sink flange — a failed mounting seal that worsens with each use
- ✕Low water pressure at the kitchen faucet while other fixtures are fine — clogged aerator or supply valve issue
- ✕Planning a kitchen remodel — rough-in plumbing needs to be addressed before any other trade begins
- ✕Musty odor under the kitchen sink — a slow P-trap leak or drain connection that has loosened over time
How Kitchen Plumbing Works
We review your kitchen plans, identify all plumbing tasks, and confirm the sequence that keeps your remodel on schedule — rough-in before cabinets, trim-out after countertops.
Supply lines are run to new locations, drain lines are rerouted with correct slope and venting, and all rough-in work is secured and ready for inspection before any cabinet installation begins.
We pull the required permit and schedule inspection of the rough-in before walls are closed — protecting your remodel and confirming code compliance.
After cabinets and countertops are in, we return to install the sink, connect the dishwasher, install the disposal, hook up the pot filler, and complete all trim-out connections.
Every supply connection and drain connection is tested under full operating conditions — we run the dishwasher, disposal, and all faucets before signing off on the work.
What's Included with Kitchen Plumbing
Kitchen Sink Installation
Undermount, drop-in, and farmhouse sink installation with new supply valves, P-trap, and drain assembly.
Dishwasher Connection
Supply line connection, drain to disposal, and air gap installation per California code.
Garbage Disposal Installation
All brands installed and connected including dishwasher drain line and proper P-trap configuration.
Pot Filler Installation
Dedicated cold water supply run through the wall behind the range with wall-mount pot filler faucet.
Sink Relocation Rough-In
Supply and drain rough-in for island or new perimeter sink location including proper venting per California code.
Remodel Rough-In & Inspection
Full kitchen plumbing rough-in for remodel projects — permitted, inspected, and ready for cabinetry.
Southern California's Trusted Kitchen Plumbing Specialists Since 2000
C-36 Licensed
License #0784091 issued by the California CSLB. You can verify it at any time. We are fully licensed for all residential and commercial plumbing.
25+ Years in Business
Founded in 2000 by Joseph Romero, America's Plumbing has been serving Southern California homeowners for over 25 years — same owner, same values.
Upfront Flat Pricing
You get a written price before we touch anything. No hourly billing surprises. No charges for work you didn't approve. What we quote is what you pay.
Written Warranty
All workmanship is backed by a written warranty. If something we repaired fails due to our work, we come back and fix it at no charge.
Common Questions About Kitchen Plumbing Services
Do I need a permit to relocate my kitchen sink during a remodel?
Yes — any change to drain line routing or supply line routing requires a permit in California. We handle the permit process and schedule inspection so your remodel is fully code-compliant and protected at resale.
What is a pot filler and do I need a dedicated water line?
A pot filler is a wall-mount faucet installed above the range so you can fill pots without carrying them from the sink. It requires a dedicated cold water supply line run through the wall to a valve behind the faucet. We run the supply line during the rough-in phase before tile and drywall.
Why does my kitchen island drain gurgle?
Island drains are more complex than perimeter drains because they can't vent through an exterior wall directly above the drain. Without proper venting — either an air admittance valve or an island loop vent — you get gurgling and slow drainage. We install island drains with correct venting from the start.
Can you connect my new dishwasher to my existing disposal?
Yes — we connect the dishwasher drain line to the disposal and verify the knockout is removed, install the supply line with a proper shutoff valve, and confirm the air gap (required in California) is correctly installed and flowing.
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