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Plumbing installers for a remodel or addition in Castro Valley

Pedro Galvan Plumbing, Inc.

5405 Ace Ct
4.85(
17
)
•Approved Pro

Pedro Galvan Plumbing, Inc.

5405 Ace Ct
4.85(
17
)
•Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
21 years of experience

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"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."

nicola s on July 2025

Pedro Galvan Ramirez Plumbing, Inc., is the premier plumbing contractor in the Richmond Area. We finish every job to the customer's standards. Call today for a free quote!

"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."

nicola s on July 2025

Avatar for Prime Time Plumbing

Prime Time Plumbing

1804 Hoke Ct
5.00(
3
)
•Approved Pro

Prime Time Plumbing

1804 Hoke Ct
5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"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!"

Alex H on October 2023

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"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!"

Alex H on October 2023

Avatar for Jose's Plumbing & Rooter Incorporated

Jose's Plumbing & Rooter Incorporated

3621 Lafayette Street, Unit 4
5.00(
5
)
•Approved Pro

Jose's Plumbing & Rooter Incorporated

3621 Lafayette Street, Unit 4
5.00(
5
)
•Approved Pro
Customers say: Quick response
12 local quotes requested
26 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Professional & knowleadeable of our plumbing needs . Jose was honest & sincere with communication & resolved and immediately remediated a better solution . The utility sink & plumbing is excellent work & efficiently completed the job with expectancy . The plumber was courteous & tidy around work area . We are happy with the job done especially customer service we received . Thank you ! "

Melany R on May 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Professional & knowleadeable of our plumbing needs . Jose was honest & sincere with communication & resolved and immediately remediated a better solution . The utility sink & plumbing is excellent work & efficiently completed the job with expectancy . The plumber was courteous & tidy around work area . We are happy with the job done especially customer service we received . Thank you ! "

Melany R on May 2025

Warriors Plumbing

8511 Holly Street, Unit 1
5.00(
2
)
•Approved Pro

Warriors Plumbing

8511 Holly Street, Unit 1
5.00(
2
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
11 years of experience

At Warriors Plumbing, we work along wite are committed to quality work and excellent customer service. You are guaranteed a pleasant experience with us every time. We strive to make you a repeat customer. We specialize in residential plumbing. Please contact us today, we look forward to helping you with your needs.

"I had a great experience with Sergio. He did a great job! He was knowledgeable and very professional. I definitely will continue using his plumbing services whenever I need it."

Grace G on July 2018

At Warriors Plumbing, we work along wite are committed to quality work and excellent customer service. You are guaranteed a pleasant experience with us every time. We strive to make you a repeat customer. We specialize in residential plumbing. Please contact us today, we look forward to helping you with your needs.

"I had a great experience with Sergio. He did a great job! He was knowledgeable and very professional. I definitely will continue using his plumbing services whenever I need it."

Grace G on July 2018

Avatar for Malachi Plumbing, Inc.

Malachi Plumbing, Inc.

4240 Machado Ln
5.00(
3
)
•Approved Pro

Malachi Plumbing, Inc.

4240 Machado Ln
5.00(
3
)
•Approved Pro
29 local quotes requested
7 years of experience

At Malachi Plumbing, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Very through and professional!"

Angel R on July 2025

At Malachi Plumbing, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"Very through and professional!"

Angel R on July 2025

Avatar for BAYPRO PLUMBING

BAYPRO PLUMBING

611 BRIGHTON RD PACIFICA
5.00(
4
)
•Approved Pro

BAYPRO PLUMBING

611 BRIGHTON RD PACIFICA
5.00(
4
)
•Approved Pro

BAYPRO PLUMBING We are 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.

"Ed is my go to plumber . He regularly services my apts and laundrymat . Remodels,service calls and maintenance. He is prompt efficient and clean. I am an electrician by day and I recognize a good tradesman. "

Steve M on August 2025

BAYPRO PLUMBING We are 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.

"Ed is my go to plumber . He regularly services my apts and laundrymat . Remodels,service calls and maintenance. He is prompt efficient and clean. I am an electrician by day and I recognize a good tradesman. "

Steve M on August 2025

JLH PLUMBING CO INC

1719 LA SALLE AVENUE
5.00(
1
)
•Approved Pro

JLH PLUMBING CO INC

1719 LA SALLE AVENUE
5.00(
1
)
•Approved Pro
Free onsite estimate

JLH Plumbing Co Inc is a trusted, licensed plumbing company committed to reliability, responsiveness, and top-tier workmanship. As a Master Plumber–owned business, we specialize in installations and rough-ins, water and sewer main installation, water heater setups, and gas line services. We believe in clear communication, attention to detail, and educating our customers throughout the process. Whether it's a large-scale project or a simple repair, JLH Plumbing Co Inc is dedicated to getting the job done right with integrity and professionalism.

"Not only does Jeremy provide high quality workmanship he shows up on time if not early. I would recommend him for all your plumbing needs. "

Ryan Z on May 2025

JLH Plumbing Co Inc is a trusted, licensed plumbing company committed to reliability, responsiveness, and top-tier workmanship. As a Master Plumber–owned business, we specialize in installations and rough-ins, water and sewer main installation, water heater setups, and gas line services. We believe in clear communication, attention to detail, and educating our customers throughout the process. Whether it's a large-scale project or a simple repair, JLH Plumbing Co Inc is dedicated to getting the job done right with integrity and professionalism.

"Not only does Jeremy provide high quality workmanship he shows up on time if not early. I would recommend him for all your plumbing needs. "

Ryan Z on May 2025

Avatar for OCEAN PLUMBING

OCEAN PLUMBING

2118 65TH AVENUE # 1133912
5.00(
4
)
•Approved Pro

OCEAN PLUMBING

2118 65TH AVENUE # 1133912
5.00(
4
)
•Approved Pro
13 years of experience
Free onsite estimate

Ocean Plumbing is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"He came in time, had all the parts, and was done in less than an hour. He was pleasant, respectful, gave me options, and priced the work fairly. "

Barry C on July 2025

Ocean Plumbing is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"He came in time, had all the parts, and was done in less than an hour. He was pleasant, respectful, gave me options, and priced the work fairly. "

Barry C on July 2025

Avatar for Plan Perfect Remodeling

Plan Perfect Remodeling

Bay Area
5.00(
11
)
•Approved Pro

Plan Perfect Remodeling

Bay Area
5.00(
11
)
•Approved Pro
Customers say: Quick response
690 local quotes requested
3 years of experience

At Plan Perfect Remodeling, WE SPECIALIZE IN KITCHEN AND BATH REMODELS but our expertise extends to all aspects of home renovation. Whether you're considering a full home makeover or simply want to refresh specific areas, we're here to bring your vision to life. Not sure where to start? Schedule a complimentary, in-home design consultation with us. Consultation includes 3-D design presentation. Our team will provide expert guidance and tailored recommendations to help you make the most of your space. Let's work together to create a home that reflects your style and exceeds your expectations.

"Blown away by Bryce’s professionalism and customer service. He guided us through the design and installation and like a pro and left us with the most beautiful kitchen. Thanks Bryce!"

trevor w on April 2024

At Plan Perfect Remodeling, WE SPECIALIZE IN KITCHEN AND BATH REMODELS but our expertise extends to all aspects of home renovation. Whether you're considering a full home makeover or simply want to refresh specific areas, we're here to bring your vision to life. Not sure where to start? Schedule a complimentary, in-home design consultation with us. Consultation includes 3-D design presentation. Our team will provide expert guidance and tailored recommendations to help you make the most of your space. Let's work together to create a home that reflects your style and exceeds your expectations.

"Blown away by Bryce’s professionalism and customer service. He guided us through the design and installation and like a pro and left us with the most beautiful kitchen. Thanks Bryce!"

trevor w on April 2024

Avatar for Cal Green Remodeling

Cal Green Remodeling

1400 Coleman Ave, Unit F14-2
5.00(
14
)
•Approved Pro

Cal Green Remodeling

1400 Coleman Ave, Unit F14-2
5.00(
14
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
774 local quotes requested

Welcome to Cal Green Remodeling. We do our best to take the stress out of home remodeling, working directly with our clients to make sure they understand the process, options available, and budget. Our goal is to make your project everything you dreamt it would be. From custom kitchens to concrete floors we do it all and our experienced professionals can help you figure out what products are right for you. We offer industrial grade finishes that can handle excessive traffic, as well as fine finishes for your home. Contact us today for a free estimate, we look forward to hearing from you. Website - https://calgreenremodeling.com/ Phone - 800-803-9927

"I found Cal Green Remodeling and its team who managed by Shay to be a very experienced, knowledgeable and creative asset to the remodeling project of our kitchen, living room, laundry room and guest bathroom. During the work, Shay was available for all of our questions/concerns and he also helped us with all the issues that were raised up during the work and we are very satisfied with our beautiful new remodeling project."

Denice W on April 2020

Welcome to Cal Green Remodeling. We do our best to take the stress out of home remodeling, working directly with our clients to make sure they understand the process, options available, and budget. Our goal is to make your project everything you dreamt it would be. From custom kitchens to concrete floors we do it all and our experienced professionals can help you figure out what products are right for you. We offer industrial grade finishes that can handle excessive traffic, as well as fine finishes for your home. Contact us today for a free estimate, we look forward to hearing from you. Website - https://calgreenremodeling.com/ Phone - 800-803-9927

"I found Cal Green Remodeling and its team who managed by Shay to be a very experienced, knowledgeable and creative asset to the remodeling project of our kitchen, living room, laundry room and guest bathroom. During the work, Shay was available for all of our questions/concerns and he also helped us with all the issues that were raised up during the work and we are very satisfied with our beautiful new remodeling project."

Denice W on April 2020

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FAQs for plumbing installation for a remodel or addition projects in Castro Valley, 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 Castro Valley, 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.

See all articles