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Top-Rated Plumbing installers for a remodel or addition in Duarte - Updated Nov 2026

Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
172
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"The technician arrived at the start of the 2 hour window. On time! Very professional. Explained options for dealing with my toilet leak. I chose to replace the toilet and gave him guidlines for the new toilet. He went to Home Depot, acquired the toilet returned promptly and installed it in a timely manner. After which he broke down and explained the itemized charges. After paying for the work thru my credit card, I received an e-mail summary right away...One major concern that I had in hiring Western Rooter & Plumbing was that their technicians had been vaccinated for Covid 19. I had been referred to Western earlier this year by my condo HOA for a common area leak repair in my unit. I was assured by the dispatcher that the technician coming to my condo was vaccinated against Covid. So when I had this toilet leak problem 6 months later that I had to pay for, out of a multitude of plumbing companies, I went back to Western Rooter & Plumbing after receiving the same assurance."
Ruben installs a new drainage system under a customers home. Working in a crawl space is rough, but we do what is needed.
Backing up? Got roots? Blast those roots out with a Hydro Jetter! We use a wart hog nozzle that combines controlled rotation with a unique 8 jet cutting configuration optimized for removing roots. It’s better with a jetter! Call us! We got this! ??
Sewer Line Camera
No drain clog too big or small, Western Rooter covers them all!
Justin clearing a Kitchen sink back-up after the Memorial holiday.
HALO 5 whole house water filtration system.

+542

Response time12 hrs
Response rate100%
5 neighbors recently requested a quote
AGL Plumbing & Construction, Inc.
5.0(
3
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"After getting different quotations from different construction companies, even Home depot, AGL gives us reasonable pricing options. They did such a good job on remodeling two of my bathrooms we had a special request canceling a door and opening another, and the outcome was amazing. We went from having one bathroom and a half to two full bathrooms. After seeing the amazing job that they did with the bathroom we decided to also remodeling our kitchen with them it was the best decision."
Response time8 hrs
Recommended by66%of homeowners
Avatar for Socal Express Restoration and Construction Inc.
Socal Express Restoration and Construction Inc.
New to Angi
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

We are an ethical, honest and professional company. We are easy to communicate with. Always working with you until the job is done right and to your specifications. When working with our company you can expect integrity, prompt service and superior customer service. Always leaving the job site clean . We take pride in our services and enjoy making clients repeat clients. You can count on us to get the job done right the first time. We will meet with you at your convenience and will not keep you waiting. \n \nCall us today for your free estimate. You'll be pleased you did. Thank you

Response time2 days
Avatar for Mr. Plumber Man
Mr. Plumber Man
5.0(
18
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 2004

Emergency services offered

"Tito & Gabe arrived on time & were very professional & COVID compliant. They assessed what I needed and completed the work in a fast, efficient and clean manner. I love my new showerhead and kitchen faucet. Would definitely hire them again for my plumbing needs."
Additional Photos
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+31

Recommended by100%of homeowners
Avatar for John's Plumbing and Drain Services
John's Plumbing and Drain Services
4.7(
47
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"My family recently moved Fresno. When we lived in LA we hired Johns Plumbing to install a new water heater. It was 40 gallon Bradford White water heater. John gave a free estimate first. Then his team installed water heater. Victor and his helper worked fast and accurate. We highly recomend Johns plumbing"
Plumbing Project
Pressure Regulator Valve Replacement BEFORE Job is Performed Atwater Village LA
Sprinkler valve Installation needed. Before. Hyperon Ave Los Angeles, CA
AFTER nstallation
BEFORE

+125

Response time6 hrs
Recommended by76%of homeowners
Avatar for Superior Home Remodeling
Superior Home Remodeling
5.0(
122
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 1997

Free estimates

"Eran and his crew at Superior Home Remodeling delivered! I truly appreciate Eran's guidance through my major home remodel. My HOA is very strict and required extensive plans and paperwork to get architectural and HOA approval. No task or requirement seemed too big or complicated for him. I appreciated his optimism during entire process. He truly loves his work and wants his clients to be happy. I also appreciated his help with design as he has an eye for what works. I am very pleased with the choice of engineered wood flooring, the quartz countertops, the tile in the bathrooms and the beautiful cabinetry. I feel fortunate to have found this company and would recommend them to anyone looking for a stylish remodel with attention to the details. A big remodel can seem overwhelming at first but Eran is patient and walks you through the steps and does the shopping with you to help you find exactly what you want. If you want personalized attention and beautiful work, you've found it with Superior Home Remodeling!"
Century City: Complete Interior Renovation
The Calvert House: Interior Renovation
Encino: Complete Interior Renovation
Burbank: Master Bathroom Renovation (Structural Walls Relocations)
Beverlywood: Roof, Exterior Paint, & Copper Gutters

+364

Recommended by100%of homeowners
Avatar for Repipe Pro
Repipe Pro
5.0(
20
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"Art was extremely helpful and accommodating at every step of the project, from bidding through scheduling and even some additional work we needed a few weeks later. The team worked efficiently, doing a new main line install (going under our sidewalk and concrete without any demolition), re-piped the horizontal pipes under the house with copper (they were 100 year old galvanized), and setup a new shut off and regulator outside. They did everything in a day and cleaned up nicely. When we had other contractors working on our foundation 2 weeks later, they bent over backwards to get plumbers out the next day to make some fixes to drain pipe and at an excellent price. I got quotes from three companies and Repipe Pro was the most competitive and also great responsiveness from Art and his wife Thelma who run the business. To anyone looking for a repipe of a home or new main line or having drain work done, I definitely recommend contacting Art at Repipe Pro."
Recommended by100%of homeowners
Avatar for Pearl Remodeling
Pearl Remodeling
4.9(
106
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 1997

Free estimates

Credit card accepted

"I’m very happy we hired Pearl Remodeling to remodel our bathroom. They were professional, extremely competent, and timely. I originally hired a different local contractor for the project. I provided the design with detailed scale drawings and dimensions that included stripping the room to the studs and installing a new tub with tiles. Fortunately, I am very knowledgeable when it comes to design, construction, and engineering, because the work done by the original contractor ranged from very sub-standard to downright wrong. I almost never saw their foreman, and good communication was lacking. They even damaged the bathtub because it wasn’t properly covered. Most of their workers were unlicensed, and apparently low-skilled. I became afraid to not be there whenever they were present. After watching them re-do several processes multiple times poorly (structural, plumbing, electrical, HVAC), I fired them and hired Pearl Remodeling to take it over. I’m so glad I did; they made a HUGE difference. And Pearl’s pricing was the same as the original company. All of Pearl’s workers were licensed and high-caliber professionals. They actually paid close attention to the drawings and asked pertinent questions while reviewing them. It was refreshing to see their quality workmanship and attention to details far beyond my plans. And their tile work was impeccable. Pearl’s project manager, Avi Shushan, remained very involved the entire time and provided excellent advice. His foreman, Jorge, was constantly communicating and updating me. (BTW, Jorge has a degree in civil engineering from UC Northridge.) They stuck to their timeline, and were flexible with a few last-minute adjustments I had sprung on them. When I fired the first company, their owner warned me that I was just being too particular, and that all contractors are the same; and if I wanted the quality I was demanding, I would have to personally supervise their work constantly. NOT TRUE!!! Pearl proved that to me! Thank goodness I called them. We now have a bathroom that exceeds our wishes. It is my pleasure to highly recommend Pearl Remodeling to anyone seeking a first-rate contractor that doesn’t over-charge for their services. I trust you will be as happy with them as we are."
Kitchen - Modern Style, Gold Light Pendants, Marble Countertop, Double-Oven, Built-in Microwave, Pantry.
Kitchen: Island & Double Oven
Open studio ADU
Kitchen - Modern Style, Gold Light Pendants, Marble Countertop, Double-Oven, Built-in Microwave, Pantry.
Kitchen: Island

+144

Recommended by96%of homeowners
Avatar for RC's Plumbing
RC's Plumbing
4.6(
33
)
Plumbing for a Remodel or Addition - Install

Serving Duarte, CA and surrounding areas

In business since 2013

Free estimates

Small jobs welcome

"RCâ s Plumbing is absolutely the best! Robert, the owner of RCâ s Plumbing, replaced a leaking 75-gallon water heater (with recirculating pump) just yesterday and his quality of work from start to finish was truly superb! His attention to detail and thoughtfulness throughout every step of the project, including the mitigation of mold and reinforcing the raised platform that the heavy (approx. 620-lbs, filled) water heater sits on, is honestly second to none. Something that I also appreciated and valued about RCâ s Plumbing and Robert is how he takes his time to answer any and all questions about the project, both during and after the project. After completion of the project, Robert summarized everything that was done, showed us how to operate the various components (e.g., new valves, gas sediment trap, pressure release valve, etc.) and also shared information about maintenance of our new 75-gallon water heater and registration for warranty. Robert and his technician assistant (his son) also cleaned up the entire work area before leaving. My wife and I could not be more happy! One final but very important noteâ there are many other plumbers out there competing for your project. When it comes to a water heater replacement project, whether it be a common gas water heater with tank storage or a tankless gas or all-electric water heater, many plumbers only offer a specific brand of water heater they like to install. You donâ t really get a choice. With Robert and RCâ s Plumbing, I received an entirely different and genuinely appreciated and valued experience that many other plumbers would not provideâ being able to choose/select the make and model of the water heater you want for your house without paying an inflated price for the project! After doing some research regarding the make and model of water heater I wanted for my home, l shared the information with Robert. He was completely respectful and open to my choice/selection of water heater and without hesitation, agreed to call the plumbing supply houses he normally use to track down the water heater I wanted. When he learned the local supply houses did not carry the specific model I sought, Robert did not hesitate to special order the specific model for me. When the water heater was delivered to RCâ s Plumbing, Robert called to schedule the installation appointment. As stated earlier, my wife and I could not be more happy with the completed project. We highly recommend RCâ s Plumbing without hesitation for all your plumbing needs! Thank you again, Robert, for the super job and you will have us as customers for life! Tom"
Old 40 Gallon Water Heater
Replaced This Sink
La Puente,  Water Heater
New Sink and faucet
New valves and garbage disposal

+3

Response time11 hrs
Response rate95%
Recommended by92%of homeowners
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FAQs for plumbing installation for a remodel or addition projects in Duarte, 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 Duarte, 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.