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TRUSTED BY LOS ALTOS, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon1.3k+
    Verified plumbing services reviews

Find Plumbers in Los Altos

Avatar for Green Arrow Plumbing
Green Arrow Plumbing
5.0(
40
)
Faucets, Fixtures and Pipes - Repair or ReplaceDrain Clog or Blockage - ClearWater Heater - Install or Replace+14 more

Serving Los Altos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Rarely write reviews, but I had to take the time to recognize the incredible service I received from Green Arrow Plumbing. From start to finish, this was hands-down one of the best service experiences I’ve ever had! I originally called for a relatively simple job replacing a shower head but while they were here, I also mentioned a persistent issue with my main house drain being clogged. Without hesitation, they jumped into action and took care of both problems quickly, efficiently, and with zero mess left behind. They were punctual, professional, and friendly . They explained everything in simple terms, gave a fair and honest quote, and stuck to it. No upselling, no surprises just quality work done right the first time. If you need a reliable, honest, and highly skilled plumber I highly recommend Cornelio. I’ll definitely be calling them again for any future needs. Thank you for making what could have been a stressful situation completely stress free!"
Water Heaters Project
Plumbing Project
Plumbing Project
Plumbing Project
Drain replacement

+50

Response time9 hrs
Response rate100%
13 neighbors recently requested a quote
Avatar for Jess Plumbing
Jess Plumbing
4.9(
50
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+22 more

Serving Los Altos, CA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Jesus was awesome - not only was he the first to respond to my inquiry, he fit me in quickly after a weekend and did the best job of any plumber I have ever had service my condo. Not all plumbers do a thorough or ideal set up and Jesus corrected what was leaking and fixed prior issues. Personable, professional, and reasonably priced, I am definitely hiring him again for any future plumbing work!"
Plumbing Project
Plumbing Project
Plumbing Project /water main
Old gate valve/ doesn’t shut off water
Installed new Zoeller sewer tank lid

+178

Response time1 day
Response rate100%
Recommended by93%of homeowners
Avatar for Mike Counsil Plumbing and Rooter
Mike Counsil Plumbing and Rooter
4.0(
331
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+22 more

Serving Los Altos, CA and surrounding areas

Approved (Corporate)

In business since 1994

Emergency services offered

Warranties offered

"My dishwater was not working anymore and the error message showed it was a plumbing issue. Anthony from Mike Council Plumbing was my technician. He did a full check on both the pipes and the dishwater and was able to diagnose that it was the dishwasher not the plumbing. I really appreciated him taking the time to explain the issues in detail. If things break, I will ask to have him back on the job. Extremely professional and very continuous with all the Covid protocols. Great service!!!"
Preparing a safe environment for working on a sewer line replacement.
Water heater installation with expansion tank
Additional Photos
Additional Photos
Additional Photos

+28

Response time8 hrs
Response rate100%
Recommended by81%of homeowners
Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
110
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Los Altos, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"I had what turned out to be a 30 year old water heater replaced by this great company and they did it the same day of the quote. The installer had the water heater I wanted on the truck and did an excellent job of putting in the new unit, cleaning up and even replacing copper flex tubing and installing a new overflow pipe out of copper as well, no additional cost. I would definitely recommend them for a water heater replacement."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time9 hrs
Recommended by95%of homeowners
Avatar for SWAGS Plumbing and Rooter
SWAGS Plumbing and Rooter
4.9(
15
)
Drain Clog or Blockage - ClearSewer Main - Clear

Serving Los Altos, CA and surrounding areas

Approved

In business since 2019

Emergency services offered

Warranties offered

"After talking to Jaime of SWAGS, I was made aware that it was not his company who did the plumbing work in my house, but anothe company. My apologies. Jaime was also kind enough to tell me that his company makes sure to be on the appointed time or if not, that their customers are reasonably informed of any delay. His company would have been my first choice since he told me he tried contacting me 3 times and did not get any call back from me. It must have been the day or days when I was having problems with the phone service. If only for his effort to reach out and that he was nice enough despite the mistake speaks greatly of professionalism I will definitely give his company a call the next time the need arises."
Clients Existing Water Heater
Existing Water Heater
In process photo
Corroded water pipes
Repaired water pipes

+7

Response time10 hrs
Recommended by92%of homeowners
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Showing 1-10 of 692
Plumbing questions, answered by experts

Start by checking your home's construction year, as Los Altos properties built before 1980 feature degrading galvanized supply lines or cast iron sewer laterals. You must also determine the exact condition of your sewer lateral, since homeowners own the section connecting to the public main. Finally, identify your specific water service provider and pressure zone to understand whether your new fixtures require pressure-boosting equipment.

Helpful?

Homeowners underestimate the extensive effort required to restore mature landscaping and concrete driveways after exterior trenching. Interior plumbing updates also trigger strict CA code requirements, forcing you to upgrade venting or add cleanouts beyond your original scope. Additionally, local permit approval timelines and hidden sewer lateral failures dramatically extend project schedules. Always factor in extra time for appliance deliveries and utility company coordination.

Helpful?

You must authorize all local permit applications and decide how to handle necessary sewer lateral repairs. When replacing a water heater, you must choose compliant fuel types and ensure contractors install mandatory CA seismic strapping. Furthermore, any exterior plumbing work requires you to make decisions regarding temporary disruptions to your existing landscaping, concrete driveways, and hardscapes during the excavation and restoration phases.

Helpful?

Address active slab leaks, failing water heaters, and sewer backups immediately to prevent severe structural damage and health hazards. Conversely, you can safely delay cosmetic fixture updates or proactive sewer inspections until the dry Los Altos summer months. Scheduling exterior plumbing work between late spring and early fall prevents complications caused by heavily saturated soils during the wet winter season.

Helpful?

Overwatering your lawn during the dry CA summers saturates clay-heavy soils, which puts immense pressure on underground plumbing. Watering near mature trees also accelerates aggressive root intrusion into older sewer lines. Additionally, pouring fats, oils, and grease down the drain creates severe sewer blockages. Finally, failing to adjust to seasonal shifts in hard water mineral content accelerates scale buildup inside your pipes and fixtures.

Helpful?

The Los Altos, CA homeowners’ guide to plumbing services

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