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Sink installation in San Jose for kitchens, bathrooms and garages
A new kitchen sink with new counters, an undermount upgrade, a bathroom vanity sink, or a deep utility sink for the garage. Setting the sink is only part of the job; the drain, the trap height and the supply connections decide whether it works and stays dry.
Sink installation in San Jose covers setting the sink, fitting the strainer or drain, reworking the trap to the new outlet height, and connecting supply lines with working shutoffs. Undermount sinks are mounted to the counter before or during countertop installation, so the timing is planned with the fabricator.
The job
What decides whether a new sink drains well
A new sink changes the drain: a deeper bowl lowers the outlet, a double bowl needs a continuous waste, and a disposal changes the trap height again. If the wall drain sits higher than the new outlet, the sink drains slowly or holds water in the trap arm. We check the heights before the sink is ordered, so the fix is a fitting, not a surprise.
Faucets are covered under faucet installation, and disposals under garbage disposal repair and installation.
Cost factors
What changes the price of a sink install
- Sink type Undermount and farmhouse sinks take more work.
- Drain changes Double bowls and new heights need new parts.
- Counter work Cutouts belong to the fabricator.
- Stops and lines Replaced where old.
- Disposal and dishwasher Reconnected to the new drain.
Every job is priced after we see it; any published range is for planning only.
Your options
Undermount or drop-in?
The choice depends on the countertop, and on how you like to clean.
| Undermount | Drop-in | |
|---|---|---|
| Counter | Stone or solid surface with a polished edge | Any counter, including laminate |
| Cleaning | Wipe straight into the sink | A rim that catches crumbs |
| Installation | Mounted under the counter, planned with the fabricator | Dropped into a cutout and sealed |
| Replacement | Harder once counters are set | Easier to swap later |
| Cost | Higher, with fabrication | Lower |
Kitchen sink replacement
Replacing a kitchen sink means disconnecting the faucet, disposal and drain, lifting out the old sink, and setting the new one with fresh sealant and clips. We rebuild the drain to the new bowl layout, with a continuous waste for double bowls and the dishwasher connection moved to the right tailpiece or the disposal. The trap is reset to the new height, and every joint is tested with a full basin draining at once, which is the test that shows up slow or leaking connections.
Undermount sink
An undermount sink hangs from the underside of a stone or solid-surface counter, held by clips or epoxy and sealed at the rim. The timing matters: some fabricators mount the sink in their shop, others on site when the counter goes in. We coordinate with the fabricator on the cutout template and faucet holes, then connect the drain, disposal and supply once the counter is set and the sealant has cured. Kohler and other makers publish templates we pass to the fabricator.
Bathroom vanity sink
Vanity sinks come as drop-in bowls, undermounts, vessel sinks that sit on top of the counter, and integrated tops. Each puts the drain at a different height, and vessel sinks need a taller faucet or a wall-mounted one. We install the sink and its pop-up or grid drain, reset the trap to the new outlet, and connect new stops and supply lines. When the vanity itself is new, we check that the drain and supply stubs in the wall line up with its back panel before it goes in.
Utility sink in the garage
A deep utility sink in the garage or laundry is useful for everything from paint brushes to muddy boots. It needs hot and cold supply, a drain tied into the building drain with a proper trap and vent, and ideally a spot near the existing laundry plumbing. Where the washer standpipe is close by, the sink can often share that drain line. We set a freestanding or cabinet-mounted tub, fit a faucet with a sprayer if you want one, and test the drain under full flow.
What happens after you call
How a sink install runs
- 1
Measure
Cutout, drain height and supplies.
- 2
Coordinate
With the fabricator for undermounts.
- 3
Set the sink
Sealed and clipped.
- 4
Drain
Strainer, trap and tailpieces.
- 5
Connect
Faucet, supplies and appliances.
- 6
Test
Full-basin drain and leak check.
Local context
How the counter decides the sink in San Jose kitchens
Sinks in San Jose sit on everything from original tile counters in older houses to stone counters in recent remodels, and the counter decides the install. Tile and laminate take drop-in sinks easily; stone usually means an undermount set with the fabricator. When a sink is being replaced without new counters, we measure the existing cutout first, because the new sink has to cover the old opening exactly and seal against it.
Brands we service and install
FAQ
Sink installation questions
Yes; we check it fits the cutout and drain height first.
Stone cutouts are made by the fabricator; we coordinate with them.
Usually only when the counter is replaced.
Yes, remounted to the new sink flange.
Often the trap height is wrong for the new outlet.
Kohler, American Standard and most others.
Yes, tied into the drain with a trap and vent.
Related work
Other Kitchen & Bath jobs we handle
Book a sink installation in San Jose
Call any hour; we measure before you order.
Updated September 2026