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Top-Rated Sink installation pros in Diamond Bar - Updated Nov 2026

Avatar for Mr. Plumber Man
Mr. Plumber Man
5.0(
18
)

Serving Diamond Bar, CA and surrounding areas

In business since 2004

Emergency services offered

"The job was done very well and quickly. Cleaned my sink from yesrs of hard water buildup. Left the place clean. They were quick and did a great job. Would definitely hire them again."
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+31

Recommended by100%of homeowners
Avatar for Top Contender Drain Specialist, Inc.
Top Contender Drain Specialist, Inc.
4.6(
230
)

Serving Diamond Bar, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Generally, it went well. I was told exactly what they were going to do before they did the work. The first day, I was taken aback at the price of the work, I assumed the original request would not be such an ordeal, so they allowed me time to consider the work and price while they fixed the toilet. I did decide to go ahead with Top Contender, and I am glad I did. They opened up the wall opposite the faucet, shower head, etc, and found rotten wood, which they replaced, cut away old pipes that were causing electrolysis, reinforced the pipes with staples(not sure of the technical terms), and patched up their work after replacing the shower head, faucet and spout. They were thorough. I had to add additional work to the kitchen faucet problem after cleaning under the sink and notice a crack on the pipe and ask if they would replace it after they fixed the faucet. The issue with the faucet was that it looked like it should have been stuck in the wall a lot further. I wanted to add tile on the wall behind the sink and the faucet stuck out of the wall. The exposed section was covered nicely and I am able to slide the piece, install the tile, and slide the piece back to the wall - problem solved. They did remove the plumbing underneath the sink with new, ABS p-trap assembly. Before they worked in the bathroom, they papered the floor from the front door through the bathroom, used any parts I had on hand, and aired out the bathroom during the entire time. They did clean up, better than most.. not perfect (but I would only notice that).."
Camera Inspection
Dirt, Rocks and Debry
Locator the Drain line
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+9

Recommended by91%of homeowners
Avatar for Repipe Pro
Repipe Pro
5.0(
20
)

Serving Diamond Bar, 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 One Water Systems
One Water Systems
4.7(
49
)

Serving Diamond Bar, CA and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Installation went smoothly. I've had the system for about 5 years and I recommend it highly. The water tastes great. We don't buy water anymore. Our pipes are protected from mineral buildup. Very pleased with our purchase."
April 2013 Install
April 2013 Install
Valley Center Install
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+11

Recommended by89%of homeowners
Logical Rooter & Drain Cleaning Services
5.0(
13
)

Serving Diamond Bar, CA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Service was wonderful, we needed help on a Sunday, and Jose Garcia came to our house and did a quick service. We thought it was a quick fix, but the next morning it started to back up again. We called that morning, they came out again and was told that it would be more work. Two more worker, Oliver and Jesus, came the next morning and by 2pm, all the work was done and my bathroom was cleaner then what they had walked into. I will definitely be using them for any future needs."
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Recommended by100%of homeowners
Avatar for Pioneer Plumbing & Rooter
Pioneer Plumbing & Rooter
4.3(
86
)

Serving Diamond Bar, CA and surrounding areas

In business since 1981

Free estimates

Emergency services offered

"This is the third time I've used them. The first time they straightened out another plumber's mess, and then two other events that occurred. They're very punctual; when I called them on the weekend they were still able to send someone out on the same day. They're clean, they work fast and their rates are excellent."
Kitchen
Bath
Water Heaters
Coupon
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+3

Recommended by80%of homeowners
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Sink Installation FAQs, answered by experts

Local plumbing codes and manufacturer recommendations typically dictate the minimum distance between a sink and a dishwasher. This is generally 18 to 24 inches, providing enough room for easy loading and unloading of dishes without hindering the sink's function. Maintaining this separation not only adds convenience but also reduces the chances of water damage and optimizes plumbing connections.

Drop-in sinks, also known as top-mount, are the easiest to install, especially when they fit the existing sinkhole. Drop-in sinks sit on top of the counter and have a raised edge to keep water from splashing onto the floor. They come in different styles to match your kitchen design.

Never pour used motor oil down the drain. Doing so can have serious environmental consequences, including contaminating groundwater, endangering animals, and killing vegetation. It can also clog your pipes, causing backups in your plumbing or the wastewater treatment plant. In most places, pouring motor oil down the drain is illegal, whether you do it in your home or a storm drain.

Replacing the countertop with another that fits the same size and cut out shouldn't take longer than four to five hours. The installation job entails removing the plumbing connections, unscrewing the old sink connectors, removing the countertop, placing and gluing the new countertop, and connecting the plumbing hookups.

Today’s standard sink stopper size is 1.5 inches. However, you can still find different sizes if your house uses an older sink stopper. Other sizes you can find in most hardware stores include one inch, 1-1/4 inch, 1-3/8 inch, 1-5/8 inch, 1-7/8 inch, 2 inch, 2-1/4 inch, 2-3/8 inch, and 2.5 inch.

The Diamond Bar, CA homeowners’ guide to sink installation services

From average costs to expert advice, get all the answers you need to get your job done.