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Find Plumbing installers for a remodel or addition in Brentwood

Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.5(
686
)

Serving Brentwood, CA and surrounding areas

Approved (Corporate)

In business since 1981

Warranties offered

Customers say: Super punctual

"The plumbing technicians came out as promised to assess the leak. They were both very courteous and kind and assessed the damage. I am giving three stars because they estimated the cost to be almost 250% higher than what the actual cost was to fix the issue. I am sure there are customers out there that would just accept any bid however, please get multiple beds for these projects, especially when working with this company as they will inflate the cost to take advantage of the situation. I ended up only paying for the $79 estimate."
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%
43 neighbors recently requested a quote
Pedro Galvan Plumbing, Inc.
4.9(
17
)

Serving Brentwood, 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 Prime Time Plumbing
Prime Time Plumbing
5.0(
3
)

Serving Brentwood, 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
SELES GENERAL BUILDING CONTRACTOR
New to Angi

Serving Brentwood, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

1 neighbors recently requested a quote
Avatar for Metropolis Drafting and Construction Inc.
Metropolis Drafting and Construction Inc.
5.0(
48
)

Serving Brentwood, CA and surrounding areas

In business since 2003

Free estimates

Warranties offered

"Jonathan is a consummate professional, and I would wholeheartedly recommend his services to any homeowner looking for a skilled, timely, and professional contractor with a keen eye for design. My wife and I purchased our home in April of 2025. The house is a one-story California ranch and was built in 1957. Very little work had been done on the home by prior owners: the layout was dated, there was substantial subfloor water damage, and the rear sunroom was falling apart. While my wife and I had ideas about the renovations we wanted to perform, Jonathan bridged the gap between our ideas and reality, transforming the wish list we presented to him into a beautiful home that we could not be happier in."
Recommended by100%of homeowners
Avatar for Water Heaters Only, Inc
Water Heaters Only, Inc
4.9(
303
)

Serving Brentwood, CA and surrounding areas

In business since 1968

Free estimates

Emergency services offered

"Chris did a great job. Had a water heater in stock, so was able to complete the job the day he showed up for the estimate. Only 4 Stars, because he was 17% higher cost than competitor, but he was able to complete the job the same day."
Recommended by95%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Brentwood, 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 Brentwood, 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.