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Find Plumbing installers for a remodel or addition in Diamond Bar

Avatar for Western Rooter & Plumbing
Western Rooter & Plumbing
4.8(
170
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"This is the 5th or 6th time Western Rooter and Plumbing does a plumbing job in my house over past 10 years. They installed softwater tank, replaced waterheater, fixed plumbing, and more. Always excellent"
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 time7 hrs
Response rate98%
20 neighbors recently requested a quote
Avatar for Pro Bright Construction Inc
Pro Bright Construction Inc
4.8(
21
)

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"I recently hired Pro Bright Construction to remodel my bathroom, and I couldn’t be more impressed with their work. The team was punctual, respectful, and highly skilled. They took the time to listen to my ideas and offered expert suggestions to enhance the design. The project was completed on time and within budget, which was a huge relief. They kept the work area tidy and made sure to minimize disruption to the rest of the house. I’m beyond thrilled with the final result. If you’re considering a remodel, I highly recommend Pro Bright Construction."
Response time5 hrs
Response rate85%
75 neighbors recently requested a quote
Avatar for Alpine Plumbing, Heating, and Air
Alpine Plumbing, Heating, and Air
4.7(
35
)

Serving Diamond Bar, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"Alpine plumbing replaced my main water line for a great price and in a very timely manner. They are very professional and would %100 recommend if you need any plumbing repairs done."
Plumbing - Drain Cleaning Project
Sewer cleaned of roots and ready for lining
Prepping pipe for lining by removing massive roots
Mixing resin for liners, this resin gardens to create a solid pipe
Sewer robot in the pipe

+26

Response time10 hrs
11 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for ROOTER ER & PLUMBING INC
ROOTER ER & PLUMBING INC
4.6(
24
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"I recently had the pleasure of working with Anthony Fankhauser from Rooter Er & Plumbing, and I can confidently say that he is the most professional plumber I have ever encountered. Our search for a reliable plumber began about six weeks ago when Anthony came over to provide us with a free estimate for some work needed in our home. From the start, he impressed us with his prompt response to our request on Angie's List, arriving the same day and offering valuable tips to make our shower remodel efficient and cost-effective. Throughout our interactions with various plumbers, Anthony stood out by taking the time to truly understand our needs and how he could assist us best. Despite the initial consultation not resulting in immediate work, Anthony remained responsive and proactive. Fast forward six weeks, and he was once again quick to reply, reaffirming our confidence in his professionalism. On the day of the job, Anthony arrived on time and efficiently installed our new shower faucet, recommended the best option for our budget, and set the drain in record time, coordinating seamlessly with another contractor working on the floor. Not only did he go above and beyond by addressing additional plumbing issues in our home, such as resealing a leaking toilet tank and replacing faucets, but he also made trips to Home Depot on our behalf without any extra charge. Anthony's dedication to meeting our needs, even outside regular working hours, sets him apart from other contractors we've worked with during our home remodeling project. His attention to detail, professionalism, and unwavering commitment to quality work make him a standout professional in his field. I am typically critical when it comes to service providers, but I cannot fault Anthony in any way. His integrity, work ethic, and genuine care for his clients make him a truly exceptional plumber. If you are in need of a reliable plumber, I highly recommend reaching out to Anthony Fankhauser at Rooter Er & Plumbing. Whether you are in South County or in areas like Marietta, you can trust that you will receive top-notch service and expertise. Thank you, Anthony, for your outstanding work and for exceeding our expectations."
tankless water heater uo to code
storm drain
same as above
gas line install
gas line install

+6

Response time1 day
Response rate93%
6 neighbors recently requested a quote
Avatar for GG's Plumbing, Inc.
GG's Plumbing, Inc.
5.0(
6
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"We had a great experience with GG’s Plumbing at our cabin in Lake Arrowhead. We originally hired them to install a whole-house water shut-off system, and the job was done quickly and professionally. While they were there, the team noticed that our pipes weren’t properly insulated — something that can obviously become a real issue in the mountains during winter. What I appreciated most was their approach: they didn’t pressure us at all. They simply explained the risk, gave us the option to fix it now or later, and let us decide. That kind of honesty goes a long way. We chose to go ahead and have the insulation done, and I’m glad we did. Their team was easy to work with, the communication (mostly through text) was fast and clear, and everything was handled smoothly. Reliable, knowledgeable, and straightforward — I would absolutely recommend GG’s Plumbing."
Water repipe
Water repipe
2 neighbors recently requested a quote
Avatar for Drain Right Services, Inc.
Drain Right Services, Inc.
3.9(
69
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Drain Right Services quickly responded to my request for service and repair, and they arrived within 2 hours. They were the most affordable and offered to diagnose the problem free of charge. I was charged for their labor to fix the issue, and it was resolved within an hour. I plan to continue using them, for when I need additional plumbing services. Quick, professional, kind, and affordable."
Home Services
Heating & Air
Camera Service/Locator by Drain Right
In Action Drain Cleaning!
Residential Professionals

+18

Response time10 hrs
Response rate87%
17 neighbors recently requested a quote
Avatar for Cruz Plumbing and Rooter Services
Cruz Plumbing and Rooter Services
4.5(
15
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Very Professional and knowledgeable with plumbing. Mr Cruz provided quick service and understood why we wanted this project done quickly to facilitate my mother's handicap situation. Hoping to give him more business in the future. Thank You"
Water Main replacement
Complete Sewer Replacement
Response time1 day
Recommended by100%of homeowners
AGL Plumbing & Construction, Inc.
5.0(
3
)

Serving Diamond Bar, 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
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Showing 1-10 of 324
FAQs for plumbing installation for a remodel or addition projects in Diamond Bar, 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 Diamond Bar, 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.