Mike Testa Plumbing, Inc.

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Mike Testa Plumbing, Inc.
679 SURVEYS
25 CONSECUTIVE YEARS
SINCE APRIL 2002
CERT 48

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679
Verified Customers
Surveyed
Customer Loyalty
Customer Satisfaction
Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

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Diamond Certified Company Report SUMMARY UPDATE March 2026

Company summary image
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Mike Testa Plumbing, Inc.

Rated Highest in Quality and Helpful Expertise for 25 Consecutive Years.

location
4244 Redwood Hwy, San Rafael, CA 94903

Quick Summary

  • Diamond Certified since 2002
  • Provides plumbing services for residential and commercial clients throughout Marin County
  • Offers free estimates
  • Available for same-day emergency plumbing work

Top News Updated

COMPANY MILESTONES

Mike Testa Plumbing, Inc. is celebrating its 37th anniversary in 2026.

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REBATES & INCENTIVES

Mike Testa Plumbing, Inc. is currently offering rebates through BayREN for energy-efficient upgrades (heat pumps, water heaters, smart thermostats, insulation, etc.) in select Bay Area counties. Additional regional programs may offer rebates, financing options and energy assistance for qualifying homeowners.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They’re like old-time plumbers—knowledgeable and honest. They were straightforward about what needed to be repaired and I never felt taken advantage of.”

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From a recent Diamond Certified Survey Response: “I think they’re one of the best plumbing teams in Marin County. They get the job done right the first time and provide peace of mind, [and they’re always ready to come back if any issues arise.”

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Trending Projects

Mike Testa Plumbing, Inc. recently completed a plumbing repair project for a homeowner in San Rafael. The client praised the technician, Byron, for his excellent communication and ability to immediately...

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Mike Testa Plumbing, Inc.
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Mike Testa Plumbing, Inc.

Plumbing
|
Marin County
diamondcertified logo
25 CONSECUTIVE YEARS

Diamond Certified Researched Articles on Mike Testa Plumbing, Inc.

researched article

Mike Testa Plumbing works on all types of plumbing fixtures, including bathtubs.

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Mike Testa Plumbing, Inc. provides a variety of general plumbing services for residential, commercial and industrial clients throughout Marin County. In addition to upgrading plumbing systems and performing various repairs, the company installs plumbing for new construction projects, remodels and additions; handles backflow prevention testing and sewer video inspections; detects leaks and locates sewer lines; and more.

Mike Testa’s family has been in the plumbing business serving Marin County for more than 70 years. Mr. Testa says his company has become a thriving operation that has earned a reputation for providing excellent plumbing work and outstanding customer service. “We started with virtually no clientele, but we worked hard and eventually earned our customers’ respect and loyalty. Our 2015 Best Plumber in Marin award from Pacific Sun and our 24 years of earning Diamond Certified are indicative of our consistency.”

Mike Testa Plumbing’s plumbers attend regular training classes to stay updated on the industry’s latest technologies and techniques. Mr. Testa says they combine modern knowledge with old-fashioned customer service to create truly enjoyable plumbing experiences for clients. “We abide by the golden rule of doing business: treat customers the way we’d expect to be treated.”

Mike Testa, Owner-Mike Testa Plumbing, Inc.
Mike Testa, Owner

Diamond Certified Researched Capabilities on Mike Testa Plumbing, Inc.

Service Area

serving area
Marin County
Surrounding Communities
Serving Marin County and Surrounding Communities

Main Services

Plumbing
  • Commercial Plumbing
  • Drain Cleaning
  • Emergency Plumber
  • Gas Pipe Repair
  • Leak Detection
  • Plumbing Services
  • Sewer Pipe
  • Toilet Repair
  • Water Heater Installation
  • Water Heater Repair
  • Water Heater Replacement
  • Water Lines

Additional Services

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Company Info

Hours
Mon
07:00 am - 04:00 pm
Tue
07:00 am - 04:00 pm
Wed
07:00 am - 04:00 pm
Thu
07:00 am - 04:00 pm
Fri
07:00 am - 04:00 pm
Sat
07:00 am - 04:00 pm
Sun
Closed
Closed
Contact
Mike Testa Plumbing, Inc.

Capabilities Table

Company Name
Mike Testa Plumbing, Inc.
Managers
Kyle Barnhart and Mike Testa, Owners
Years in Industry
42 (Mr. Testa)
# of Employees
14
License
519618
Founded
1989

Key Factors

Select Photos From Mike Testa Plumbing, Inc.

1 of 3Picture of In a serene kitchen space, a pristine farmhouse sink is ready for use. Reflecting Mike Testa Plumbing, Inc.'s focus on quality outcomes, their expert craftsmanship shines in every detail. Copyright ©2025 Diamond Certified Resource. - Mike Testa Plumbing, Inc.
In a serene kitchen space, a pristine farmhouse sink is ready for use. Reflecting Mike Testa Plumbing, Inc.'s focus on quality outcomes, their expert craftsmanship shines in every detail. Copyright ©2025 Diamond Certified Resource.
Picture of In a serene kitchen space, a pristine farmhouse sink is ready for use. Reflecting Mike Testa Plumbing, Inc.'s focus on quality outcomes, their expert craftsmanship shines in every detail. Copyright ©2025 Diamond Certified Resource. - Mike Testa Plumbing, Inc.
Picture of  A well-organized outdoor plumbing setup showcases Mike Testa Plumbing, Inc.'s commitment to quality outcomes. This attention to detail is why the company scored Highest in Quality and Helpful Expertise. Copyright ©2025 Diamond Certified Resource.

 - Mike Testa Plumbing, Inc.
Picture of Mike Testa Plumbing works on all types of plumbing fixtures including bathtubs. - Mike Testa Plumbing, Inc.

Diamond Certified Expert Contributor Advice & Tips

Kyle Barnhart is vice president of Mike Testa Plumbing, Inc., a Diamond Certified company. He can be reached at (415) 868-5917 or by email.

Kyle Barnhart is vice president of Mike Testa Plumbing, Inc., a Diamond Certified company. He can be reached at (415) 868-5917 or by email.

Kyle Barnhart: Gradual Growth

By James Florence, Diamond Certified Resource Reporter

SAN RAFAEL — Looking back on his plumbing career, Kyle Barnhart identifies a gradual progression of steady professional growth. “My entire career has basically been one big on-the-job learning experience,” he says. “It started in my childhood—my father was a plumber and he used to take me with him to jobsites. I always had an interest in the trade, especially the troubleshooting aspect. You really have to use your brain, a...

Read Full Article - Kyle Barnhart: Gradual Growth

Mike Testa Plumbing, Inc. Website and External Feeds

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Mike Testa Plumbing, Inc. Ratings and Survey Responses (reviews)

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Mike Testa Plumbing, Inc.
679 SURVEYS
  • 4.7
  • star image
  • star image
  • star image
  • star image
  • star image
25 CONSECUTIVE YEARS
SINCE APRIL 2002
CERT 48

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance
Mike Testa Plumbing, Inc.

Based in San Rafael, CA

4.7 avg. star score from 679 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. Mike Testa Plumbing, Inc. scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.