How Much Does Bidet Installation Cost in Mountain View, CA? (2026)

Average Cost

$585–$1,245

Materials

$272–$695

Labor (South Bay)

$178–$263

Labor rates in South Bay are +25% compared to Sacramento Metro baseline.

Bidet installations in NorCal range from simple T-adapter bidet seats (done in under an hour) to full standalone bidet fixtures requiring dedicated hot/cold supply lines and a drain connection. Electric bidet seats (e.g., TOTO Washlet, Brondell) need a nearby GFCI outlet — if one doesn't exist, we coordinate with an electrician. Our plumbers ensure all connections meet code and test for leaks before finishing.

Mountain View is located in Santa Clara County (South Bay). Google's headquarters city with a mix of older ranches, Eichlers, and new luxury builds. The local utility provider is PG&E.

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City

Bidets

Materials Included

Electric Bidet Seat (TOTO Washlet or equiv.)1 unit

$250–$650

T-Adapter & Braided Supply Line1 set

$12–$25

Mounting Plate & Hardware Kit1 kit

$10–$20

GFCI Outlet Installation (if needed)1 unit

$80–$180

Labor(South Bay +25%)

Licensed Plumber1.5h @ $119–$175/hr

$178–$263

Contractor Markup30%

0%Avg 30%100%

Materials

$272–$695

Labor

$178–$263

Markup

$135–$287

Estimated Total Cost

$585 – $1,245

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California Building Code

California Plumbing Code requires an air gap or approved backflow preventer on bidet water supplies. Electric bidet seats must be plugged into a GFCI-protected outlet per NEC.

Project Timeline

Assessment & Preparation

15-20 min

Inspect existing toilet, water supply valve, and electrical outlet availability. Shut off water and drain the toilet tank.

Supply Line & Seat Installation

30-45 min

Install the T-adapter on the toilet fill valve, route the bidet supply line, remove the existing toilet seat, and mount the bidet seat or attachment.

Testing & Adjustment

15-20 min

Restore water supply, check all connections for leaks, power on the bidet seat, test spray functions, adjust water pressure and temperature settings.

Materials Breakdown

Material	Qty	Unit	Unit Cost	Total
Electric Bidet Seat (TOTO Washlet or equiv.)	1	unit	$250–$650	$250–$650
T-Adapter & Braided Supply Line	1	set	$12–$25	$12–$25
Mounting Plate & Hardware Kit	1	kit	$10–$20	$10–$20
GFCI Outlet Installation (if needed)	1	unit	$80–$180	$80–$180

Bidet Installation in Mountain View — FAQ

Do I need a plumber for a bidet seat installation?+

Simple T-adapter bidet seats can be DIY, but hiring a plumber ensures leak-free connections and proper GFCI outlet verification. A plumber is recommended if you need a new outlet or hot water supply line.

Will a bidet seat fit my toilet?+

Most bidet seats fit standard elongated toilets. Round bowls have fewer options. We measure your toilet before ordering to confirm compatibility.

Do electric bidet seats require a dedicated circuit?+

Most bidet seats draw 1,000-1,400 watts and can share a 15A GFCI circuit if nothing else is on it. A nearby bathroom GFCI outlet within 3 feet of the toilet is ideal.