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Find Plumbing installers for a remodel or addition in Walnut Creek

Avatar for Plumbing 1 Builder's Inc
Plumbing 1 Builder's Inc
5.0(
15
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Leo and Tony and Able are wonderful and amazing. They installed new shut off valves throughout the house and the main. New P-traps throughout, power washed all my decks and fixed two leaks on the second floor and repaired the ceiling. The most beautiful work was installing a new bathtub and tile surround. Able is an artist! Leo is so fair and honest and his team just works hard every minute they were at my house. Came when they said they would. Gave me updates. Did additional work that I asked them for. I would hire them again in a heartbeat. "
Response time3 hrs
62 neighbors recently requested a quote
Avatar for Valley Plumbing Home Center, Inc
Valley Plumbing Home Center, Inc
4.8(
242
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1982

Emergency services offered

Warranties offered

"Mike did an excellent job. He was very attentive to my concerns regarding the fill valve issue I've been having with one of the Toto toilets they installed. I am very satisfied with the resolution. Mike just reenforced my decions to use Valley for all my plumbing needs."
Additional Photos
2 neighbors recently requested a quote
Recommended by94%of homeowners
Pedro Galvan Plumbing, Inc.
4.9(
17
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

"We are incredibly grateful to Pedro Galvan and his team for stepping in during a moment of urgent need. When our hot water system suddenly failed, leaving us without hot water for daily essentials, Pedro responded with a level of professionalism, clarity, and compassion that is truly rare. From the very first call, Pedro was attentive, transparent about pricing, and committed to solving the problem quickly. He provided us with the most cost-effective and honest quote out of several we obtained—and, even more importantly, was able to come almost immediately when others could not. His workmanship was precise, efficient, and tidy. It was clear we were in the hands of someone who genuinely takes pride in his craft. In a world where so many service professionals overpromise and underdeliver, Pedro Galvan delivers exactly what he promises—and does so with warmth, integrity, and a deep respect for his clients. We recommend him without hesitation to anyone needing plumbing services."
Response time8 hrs
Recommended by94%of homeowners
Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
90
)

Serving Walnut Creek, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"The services we received from Oak Plumbing was FANTASTIC from the customer service (the ladies that answered the phones), to the Technicians. The quote/price for the repairs was very reasonable, as will as quick service. One of the things that I really appreciate was that both the technician that can to give the quote, and the technician that can to do the repairs both respected COVID Protocol including fresh booties for their shoes. Oak Plumbing will be my go-to plumbers for all my plumbing needs."
Response time2 days
3 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for JPC Rooter & Plumbing
JPC Rooter & Plumbing
4.8(
46
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Great service and quick. Plumber was very knowledgeable. Only negative was the appointment schedule. I was told between 1pm and 2pm but the plumber didn t arrive until 4pm. I think the dispatcher or owner needs to work on how to schedule clients. Plumber for me has no fault in that."
Our Work
Our Work
Our Work
Our Work
Our Work

+56

Response time4 hrs
Recommended by100%of homeowners
Avatar for Prime Time Plumbing
Prime Time Plumbing
5.0(
3
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I had a great experience with them. They did a tankless water heater for a fair price and helped install new water lines for my espresso machine in my cafe. Would recommend to anyone who needs the job done right!"
Response time40 mins
Response rate88%
Recommended by100%of homeowners
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.6(
623
)

Serving Walnut Creek, CA and surrounding areas

Approved (Corporate)

In business since 1981

Warranties offered

Customers say: Super punctual

"Albert Nahman Plumbing was helpful and extremely professional. The work done by Nicholas was resourceful (involving hooking up a new heater with different requirements into a gas supply and vent system installed thirty years earlier) and carefully executed. He's a knowledgeable, courteous, and highly skilled professional."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate99%
50 neighbors recently requested a quote
Avatar for West Peak Builders, Inc.
West Peak Builders, Inc.
5.0(
36
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"These guys are the best! They handled multiple projects for me caused by water damage They are incredibly conscientious and impeccable craftsmen.They communicated well, were very reliable and responsive and brought a level of professionalism that is hard to find. Highest recommendation."
Response time5 hrs
Recommended by97%of homeowners
Avatar for A-1 BAY AREA PLUMBING INC
A-1 BAY AREA PLUMBING INC
5.0(
3
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

A-1 PLUMBING is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Drain Repair
Water line repair
Faucets repair/ install
Faucets repair/ install
Drain Repair

+2

7 neighbors recently requested a quote
Christy Plumbing
4.7(
5
)

Serving Walnut Creek, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

Christy Plumbing is a locally owned company that prides itself on providing fast, quality plumbing work in a professional manner. Our quality of work is a testament to the level of service and results you'll get when you choose us for your plumbing needs. With over 50% of our business coming from customer referrals, we would love the opportunity to be of service to you.\n\nChristy Plumbing will serve you with value pricing, high quality workmanship and by providing you with honest guidance to make your project more affordable, without compromising the quality of the final product. We're here to serve you with the knowledge and the quality that you deserve. Christy Plumbing operates under the assumption that time is of the essence. Therefore we run our operations efficiently and are always on time! \n\nDon't settle for second best! Give us a call! We a very happy to be of service to you!

Bathroom (sink and toilet)
Bathroom (closet)
Bathroom (full view)
Kitchen (angle from stairs)
Kitchen (with view in mirror)

+1

Response time2 days
Recommended by80%of homeowners
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Showing 1-10 of 927
FAQs for plumbing installation for a remodel or addition projects in Walnut Creek, 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 Walnut Creek, 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.