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Find Plumbing installers for a remodel or addition in San Mateo

Avatar for Green Arrow Plumbing
Green Arrow Plumbing
5.0(
40
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"We needed a building cleanout installed as a requirement for our remodeling project. Cornelio was very thorough in investigating what were the requirements for the inspection. He installed a dual cleanout following all the requirements which will help us in case of any backups in the future. He was very transparent about the cost, and finished the installation on the following day. Highly recommend him for any plumbing issues."
Water Heaters Project
Plumbing Project
Plumbing Project
Plumbing Project
Drain replacement

+50

Response time9 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Jess Plumbing
Jess Plumbing
4.9(
50
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Jess was did a fantastic job installing a sewer clean out for us. We had a major backup, sewage had backed up into the tubs and he came out on a Sunday to address our emergency. He was very communicative and explained the whole process. I will definitely hire him for all our future plumbing needs!"
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 by93%of homeowners
Avatar for Mike Counsil Plumbing and Rooter
Mike Counsil Plumbing and Rooter
4.0(
330
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, CA and surrounding areas

Approved (Corporate)

In business since 1994

Emergency services offered

Warranties offered

"I use Counsil for the quality of their work and trust them to do it to highest city inspection standards. I had to do two replacement sewer lines. Counsil plumbing did the digging, plumbing and cement work with same people; the other contractor did plumbing, subcontracted sleeving sewer line and subcontracted concrete work. Counsil left the house as he found it. The other contractor left trash, rebar and wood and never came back. Counsil used a price master and a detailed contract, the other contractor gave me verbal price which became opaque. I use Counsil when i need quality work that meets inspection specifications and am willing to pay for it."
Preparing a safe environment for working on a sewer line replacement.
Water heater installation with expansion tank
Additional Photos
Additional Photos
Additional Photos

+28

Response time8 hrs
Response rate100%
Recommended by81%of homeowners
Avatar for FDL Plumbing, Inc.
FDL Plumbing, Inc.
5.0(
41
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Credit card accepted

Customers say: True professional

"As a seasoned general contractor, my decade-long collaboration with FDL Plumbing has consistently impressed me. Their commitment to quality, reliability, and professionalism sets them apart in the industry. FDL Plumbing's punctuality and efficiency ensure that projects stay on track and meet deadlines. Their attention to detail guarantees excellent results, whether tackling complex installations or troubleshooting issues. Communication is seamless with FDL Plumbing, fostering strong collaboration and transparency. Their professionalism and integrity shine through in every interaction, making them a trusted partner for any project. FDL Plumbing's dedication to excellence makes them an invaluable asset. With their expertise, reliability, and integrity, you can trust that your plumbing needs will be met with precision and care."
Existing PRV
New 3/4 Pressure reducing Valve
Existing
New Kitchen Sink/Faucet/Disposal
New Home in Moraga CA

+10

Response time2 hrs
Response rate94%
Recommended by67%of homeowners
Avatar for Sugar Bear Plumbing, Inc.
Sugar Bear Plumbing, Inc.
4.4(
71
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, CA and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"20 plus years we have used Lawrence over at Sugar Bear Plumbing, Inc for all are plumbing and electrical needs for home and business he is are go to. Great customer service..."
Portfolio
Portfolio
Portfolio
Portfolio
Portfolio

+4

Response time5 hrs
9 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Plumbing 1 Builder's Inc
Plumbing 1 Builder's Inc
5.0(
17
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, 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
Response rate85%
48 neighbors recently requested a quote
Pedro Galvan Plumbing, Inc.
4.9(
20
)
Plumbing for a Remodel or Addition - Install

Serving San Mateo, 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
...
Showing 1-10 of 232
FAQs for plumbing installation for a remodel or addition projects in San Mateo, 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 San Mateo, 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.