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TRUSTED BY CASTRO VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.3k+
    Verified affordable plumbing services reviews

Top-Rated Affordable plumbers in Castro Valley - Updated Nov 2026

Avatar for Facilities Plumbing & Drain
Facilities Plumbing & Drain
4.8(
52
)
Drain Clog or Blockage - ClearTankless Water Heater - InstallDrain Line Breakage - Camera Locate+17 more

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"I highly recommend Robert as a plumber. He is incredibly professional, knowledgeable, responsive and honest. His work is of the highest quality and he always provides excellent customer service. He is always willing to explain in detail what needs to be done and is very open with his pricing. His prices are fair and he never tries to upsell you on unnecessary services. I have been using his services for years and have never had any issues. He is the only plumber I ever trust with my home."
Starbucks 100-Gal Waterheater
Sediments inside supply line
3M 100,000-Gal
dual 3m filter install
3M 100,000-Gal

+44

Response time6 hrs
Response rate100%
71 neighbors recently requested a quote
Precise Plumbing
4.8(
448
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+2 more

Serving Castro Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Customers say: Quality work

"Jay, was not only quick to respond to my messages late at night but came early the following day for an estimate on mothers day. When he arrived, he was very knowledgeable and prepared to do the service with a coworker. Being on a budget, the service was fast and pricing was very affordable. Jay was so kind and professional, even stayed longer to make sure toilets were working properly before he left. If I could give more stars I would, defiantly found the right person, and keeping him for all other future projects and or emergencies."
Vessel sink
Floor drain and floor sink
Commercial floor drain
Laundry room
Pressure assist commercial toilet

+3

Response time6 hrs
Recommended by95%of homeowners
Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
112
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"They were great.  The job got done quickly and the installation was very high quality.  The work area was clean afterward and they took away my old heater at no extra charge.  They even installed a new wood base for the water heater to sit on because the old one had water damage from the old leaky heater.  
The only issue I had was that I had no way to double-check their price for the job.  Given the leaky heater, it had to be taken care of same day, so I didn't get multiple bids.  The price seemed a little high, but I have no reason to think I didn't get a good value.  They installed a Bradford White unit, which I understand to be a good one.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time9 hrs
Recommended by94%of homeowners
Avatar for Plumbing 1 Builder's Inc
Plumbing 1 Builder's Inc
5.0(
17
)
Faucets, Fixtures and Pipes - Repair or ReplaceGas PipingSewer Main - Install, Replace or Repair+22 more

Serving Castro Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"Plumbing 1 builders was the perfect team to come and help us with our needs. We got a full hardware replacement for our shower. They were quick and on time when it came to the quote process. They offered us the most competitive price in our area, while also being the most professional with the overall process. They didn’t try to upsell us on anything or spook us about our current set up, which did happen with other plumbers who came to give us a quote. They were quick and professional with the work as well. Everything exceeded my expectations in terms of execution. On top of that, they caught a weird error that was done by the builders and went out of their way to find a solution. We will most definitely reach out to them for any plumbing needs going forward!"
Response time3 hrs
Response rate85%
58 neighbors recently requested a quote
Avatar for Fito Plumbers, Inc.
Fito Plumbers, Inc.
4.7(
63
)
Water Main - Install, Replace or RepairDrain Line Breakage - Camera LocateDrain Clog or Blockage - Clear+10 more

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Fito Plumbers installed a new sewer line at my house. I appreciate good customer service when I see it, especially when it is with a contractor. My experience with Fito Plumbers was a positive one from the very beginning. From the quote, all the way through the final signoff Fito's team was great. Fito was honest and kept in communication with me over the one month period that it took to get the permits. His team showed up when he said they would, they were courteous and they respected my property. They did not kill one plant on my property which is a first. They cleaned up at the end of each day and they restored the pavers to the point where I can not tell where they had to remove them. I also appreciate that Fito's team power washed all the utility paint markings not only on my property but in the street. My street is covered with paint from previous work by others. Overall, Fito Plumbers was competitively priced and went beyond expectations with the installation."
Sewer Lines
Sewer Lines
Sewer Lines
Sewer Lines
Sewer Lines

+28

Response time6 hrs
Response rate90%
8 neighbors recently requested a quote
Local Plumbing & Remodeling
4.8(
13
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+3 more

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Santos Martinez is a local plumbing professional. Locally owned and operated for prompt response to your needs. Your satisfaction is always our goal and we strive to provide excellent customer service and high quality results on all of our completed projects. Call on us for all you plumbing needs. We look forward to earning your business. Call today for your free estimate. \n\nSantos Martinez es un plomero profesional de la zona. Somos una empresa local, de propiedad y familiar, que garantiza una respuesta ra¡pida a sus necesidades. Su satisfaccion es siempre nuestra prioridad y nos esforzamos por brindar un excelente servicio al cliente y resultados de alta calidad en todos nuestros proyectos. Llamenos para todas sus necesidades de plomeria. Esperamos poder servirle. Llame hoy mismo para obtener su presupuesto gratuito.\n

4 neighbors recently requested a quote
Recommended by46%of homeowners
Avatar for Durrani Plumbing
Durrani Plumbing
4.9(
15
)
Drain Clog or Blockage - ClearFaucets, Fixtures and Pipes - Repair or ReplaceSewer Main - Clear+3 more

Serving Castro Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"The service provided was very thorough. The plumber first started with the simplest, most inexpensive solution, and it turned out to solve our issue! So glad that I wasn't working through a long, drawn-out assessment. Within a few hours, the work was done, and I was delighted it turned out to be so easy!"
American Standard Faucet
Insinkerator Garbage Disposal
Bradford White Water Heater
Bradford White Water Heater
75 Gallon Water Heaters

+9

Response time3 hrs
Response rate96%
Recommended by100%of homeowners
Avatar for ELITE ROOTER, INC. - San Mateo
ELITE ROOTER, INC. - San Mateo
4.7(
16
)
Faucets, Fixtures and Pipes - Repair or ReplaceDrain Clog or Blockage - ClearDrain Line Breakage - Camera Locate+8 more

Serving Castro Valley, CA and surrounding areas

Approved (Corporate)

In business since 2017

Free estimates

Credit card accepted

Are you searching for a reliable plumber ? Elite Rooter offers expert drain cleaning & a full range of residential plumbing services . As expereinced plumbers, we understand the frustration of plumbing problems & provide fast, dependable, and affordable solutions, available 24/7 for emergencies. Whether it's a stubborn clogged drain, a leaky pipe, or a need for water heater repair or installation, our licensed & insured technicians are ready to help. You'll always receive upfront pricing with no hidden fees, and we stand behind our work with a 100% satisfaction guarantee. For dependable plumbing repair & drain cleaning services, contact Elite Rooter today ? we're here to help!.

My Work
My Work
My Work
My Work
My Work

+15

3 neighbors recently requested a quote
Recommended by62%of homeowners
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Affordable Plumbers FAQs, answered by experts

The age of your property serves as the strongest indicator for plumbing upgrades. Homes built before the 1980s contain failing galvanized supply lines and deteriorating cast iron drains. You should also check your water pressure; noticeably low pressure compared to neighbors signals internal pipe corrosion. Finally, properties situated on CA hillside terrain demand regular evaluations due to soil movement affecting underground pipes.

Helpful?

Multiple slow drains occurring simultaneously indicate a systemic failure in your main sewer line rather than a simple localized clog. On sloped Castro Valley lots, recurring wet patches in the yard point to severe subsurface pipe failures. Watch for foundation cracks near pipe penetrations and sewer gas odors during rainstorms, as these symptoms demand immediate attention from a licensed contractor to prevent disaster.

Helpful?

Homeowners consistently underestimate the permitting process for plumbing in Castro Valley, as it operates through county offices rather than a city hall. You must also account for aging materials like galvanized steel pipes and cast iron drain lines that require full replacement. Additionally, plan for sewer lateral video inspections and CA seismic gas shutoff valve requirements to ensure your property remains safe and compliant.

Helpful?

Signs of improper plumbing include mismatched pipe materials and missing seismic strapping on water heaters, which violate CA standards. Inspect your property for discolored water and reduced pressure, indicating failing galvanized pipes. On hillside lots, look for recurring wet spots or cracked concrete around foundation penetrations. Address these issues promptly by hiring a local professional to correct unpermitted or outdated work.

Helpful?

Delaying plumbing repairs in Castro Valley leads to severe foundation damage and soil erosion beneath concrete slabs. On hillside properties, prolonged leaks cause soil instability and elevate landslide risks during the rainy season. Unaddressed leaks also waste significant water and create ideal conditions for mold growth in this moderate climate. Hire a certified specialist to resolve these hazards before the winter rains arrive.

Helpful?

The Castro Valley, CA homeowners’ guide to affordable plumbing services

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