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Find Plumbing installers for a remodel or addition in Los Altos

Avatar for Green Arrow Plumbing
Green Arrow Plumbing
5.0(
39
)

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Green Arrow Plumbing has been exceptional, and I’m very grateful that I trusted them with such a significant plumbing project. From start to finish, they demonstrated a high level of professionalism and attention to detail. What initially began as two slow-dripping faucets turned into a much larger job after they conducted a thorough inspection beneath my home. Their findings were later confirmed by two other companies, but I ultimately chose Green Arrow because they took the time to clearly explain their assessment and recommendations. In addition, their quote was considerably more reasonable than the others I received. Their team is knowledgeable, thoughtful, and highly skilled. The quality of their work was even confirmed by a contractor friend of mine, who described it as A+ craftsmanship. Green Arrow made the process far less stressful. I feel confident in the work they completed, the investment I made. Call them : )"
Water Heaters Project
Plumbing Project
Plumbing Project
Plumbing Project
Drain replacement

+50

Response time9 hrs
Response rate90%
13 neighbors recently requested a quote
Avatar for Jess Plumbing
Jess Plumbing
4.9(
47
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Quick to respond, schedule, and complete work. Went ahead and also noted other improvements we may want to consider around the house with his estimate. Would definitely use him again. Thanks Jess!"
Plumbing Project
Plumbing Project
Plumbing Project /water main
Old gate valve/ doesn’t shut off water
Installed new Zoeller sewer tank lid

+178

Response time1 day
Response rate100%
Recommended by97%of homeowners
Avatar for JPC Rooter & Plumbing
JPC Rooter & Plumbing
4.8(
46
)

Serving Los Altos, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"They did a number of things. Braced and restrapped water heater and ran copper line for pressure relief to outside. Unclogged master toilet and reseated. Bolted down second toilet. Reconnected clothes dryer vent. Repaired air gap/garbage disposal and drain line under kitchen sink, crawled under house and remove galvanized pipe straps and replaced with nylon pipe clamps. I was a contractor and used to do this work, o an very critical. They did an outstanding job. Went the extra mile several times. I was expecting a bill for a higher amount but they stuck with their estimate. I recommend them highly and would use them again!!"
Our Work
Our Work
Our Work
Our Work
Our Work

+56

Response time4 hrs
Recommended by100%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Los Altos, CA

Adding bathroom plumbing to a detached garage starts with the basic line installation cost of $900 to $1,300. On top of this base expense, you'll need to budget for each fixture. A toilet costs  $250 to $550, sinks cost $150 to $800, and a shower or bathtub costs $400 to $1,900. The project will also require ventilation, moisture-resistant materials, and possibly electrical work. Remember that these costs reflect only the plumbing aspects—additional construction, finishing, and permitting expenses will apply to complete a functional bathroom space.

While certain aspects of garage renovation might be suitable for DIY enthusiasts, plumbing installation requires professional expertise. Connecting to water and sewer systems demands specialized knowledge and equipment, and improper installation can result in severe water damage, code violations, and potential health hazards. Most municipalities require permits for plumbing modifications, and these often stipulate that licensed professionals must perform work. Consider limiting your involvement to simpler tasks like painting or basic finishing work.

The timeframe for adding plumbing to a detached garage spans one to three days for the actual plumbing work. However, this represents only the active installation period. The complete project timeline must account for planning, obtaining permits (which can take weeks depending on your locality), coordinating multiple contractors if needed, and addressing any unexpected challenges that arise during installation. Weather conditions can also impact excavation and outdoor connection work.

Adding plumbing to a detached garage will likely increase your property taxes. Tax assessors consider plumbing an improvement that enhances property value and functionality. The specific tax impact varies by location and project scope. Converting a garage into living space with plumbing facilities can trigger significant reassessment in many jurisdictions. Before proceeding with your project, consult your local tax assessor's office to understand the potential tax implications and factor this ongoing expense into your decision-making process.

The Los Altos, CA homeowners’ guide to plumbing installations for a remodel or addition

From average costs to expert advice, get all the answers you need to get your job done.