Gray Plumbing Inc

Diamond Certified Company Report
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Gray Plumbing Inc
74 SURVEYS
3 CONSECUTIVE YEARS
SINCE NOVEMBER 2023
CERT 2741

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74
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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  • Survey Responses (reviews)
  • Diamond Certified Video Player
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  • Capabilities
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Diamond Certified Company Report SUMMARY UPDATE October 2025

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Gray Plumbing Inc

Rated Highest in Quality and Helpful Expertise for 3 Consecutive Years.

Quick Summary

  • Diamond Certified since 2023
  • Provides plumbing maintenance and repair services for residential and commercial clients in Solano, Napa, Contra Costa, and Alameda Counties
  • Offers 24-hour live phone answering and scheduling for next-day services
  • Free financing options available

Top News Updated

COMPANY MILESTONES

Gray Plumbing Inc is celebrating its 9th anniversary in 2025.

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SPECIAL OFFERS

Gray Plumbing Inc is currently offering several discounts, including $50 off on water heater repairs, $30 off on burst pipe repairs and $25 off for first-time customers.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They did great work. [They were] super responsive, [they] quoted a fair price and the technicians [were] phenomenal to work with.”

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From a recent Diamond Certified Survey Response: “I would highly recommend them. They’re a must-have for your plumbing needs. [I like their] honesty and the quality of [their] service.”

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Blogs & Articles

Gray Plumbing Inc recently published a new blog on its website titled, “A Straightforward Guide to Slab Leaks.”

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Gray Plumbing Inc
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Gray Plumbing Inc

Plumbing & Sewer Line Contractor
|
Alameda  Contra Costa  Napa  Solano Counties
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74 SURVEYS
3 CONSECUTIVE YEARS
SINCE NOVEMBER 2023
CERT 2741

Rated Highest in Quality & Helpful Expertise Performance Guaranteed

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  • Business Practices
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Diamond Certified Researched Articles on Gray Plumbing Inc

researched article

Gray Plumbing worked on this plumbing system.

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Gray Plumbing Inc provides a complete range of plumbing services for residential and commercial clients in Solano, Napa, Contra Costa, and Alameda Counties. The company has the in-house capabilities to handle everything from routine plumbing installations and repairs to comprehensive sewer and gas line replacements, and it also has special expertise with all types of traditional and tankless water heaters.

Owner Jeff Gray credits much of Gray Plumbing’s success to its customer-oriented business practices. “We’re punctual, we work with integrity and we do what we say we’re going to do,” he affirms. “We also give our customers plenty of options for whatever job we’re doing, which gives them an important level of control and adds value to their projects.”

Gray Plumbing prioritizes ongoing training so it can stay up-to-date with the plumbing industry’s latest techniques and technology. “Our tankless water heater training, for example, is quite extensive,” says Mr. Gray. “In addition to hours of online classes, our service technicians do in-shop training so they can expand their knowledge by sharing their experiences with each other, which means our customers get the collective expertise of numerous professionals on their jobs.”

Diamond Certified Researched Capabilities on Gray Plumbing Inc

Service Area

serving area
Solano County
Napa County
Contra Costa County
Alameda County
Serving Solano, Napa, Contra Costa and Alameda Counties, Including Fairfield, Suisun City, Vacaville, American Canyon, Napa, Vallejo, Benicia, Martinez, Pleasant Hill, San Pablo, Hercules, El Cerrito, Pinole, Orinda, Moraga, Dixon, Albany, Rio Vista and Yountville

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
Sewer Line Contractor
  • Hydro Jetting
  • Sewer Clean Outs
  • Sewer Drain Cleaning
  • Sewer Inspection
  • Sewer Line Cleaning
  • Sewer Line Repair
  • Sewer Line Replacement
  • Sewer Pipe Lining
  • Trenchless Sewer Line Replacement
  • Underground Plumbing

Additional Services

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Company Info

Hours
Mon
08:00 am - 04:00 pm
Tue
08:00 am - 04:00 pm
Wed
08:00 am - 04:00 pm
Thu
08:00 am - 04:00 pm
Fri
08:00 am - 04:00 pm
Sat
Closed
Sun
Closed
Closed
Contact
Gray Plumbing Inc

Capabilities Table

Company Name
Gray Plumbing Inc
Managers
Jeff Gray, Owner
Years in Industry
25 (Manager)
# of Employees
8
License
1026573
Memberships
Better Business Bureau, Fairfield Chamber of Commerce
Founded
2016
Payment Accepted
american express,
discover,
mastercard,
visa

Key Factors

Select Photos From Gray Plumbing Inc

1 of 10Picture of In a cohesive team display, Gray Plumbing Inc. showcases its commitment to excellence with a group of dedicated professionals. Their unity reflects a focus on quality outcomes and high customer satisfaction ratings. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
In a cohesive team display, Gray Plumbing Inc. showcases its commitment to excellence with a group of dedicated professionals. Their unity reflects a focus on quality outcomes and high customer satisfaction ratings. Copyright ©2025 Diamond Certified Resource
Picture of In a cohesive team display, Gray Plumbing Inc. showcases its commitment to excellence with a group of dedicated professionals. Their unity reflects a focus on quality outcomes and high customer satisfaction ratings. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
Picture of A newly installed garbage disposal system demonstrates Gray Plumbing Inc's commitment to quality outcomes, showcasing their expertise in modern kitchen solutions. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
Picture of The pristine dual-basin sink, complete with a sleek chrome faucet and a touch of green from a dish sponge, reflects Gray Plumbing Inc's commitment to quality outcomes. This installation exemplifies their top-rated service for Quality. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
Picture of In a testament to their precision and expertise, Gray Plumbing Inc is skillfully navigating beneath the surface, replacing essential pipes to ensure seamless water flow. Their commitment to quality outcomes is evident in every step. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
Picture of In a subtle yet significant transformation, freshly laid concrete patches renovate a tiled floor, hinting at meticulous plumbing work by Gray Plumbing Inc. The company consistently achieves a Highest in Quality rating, ensuring long-lasting results. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc
Picture of A freshly dug trench reveals meticulous groundwork by Gray Plumbing Inc, showcasing their focus on quality outcomes. The careful placement of piping hints at the expert precision the company is known for. Copyright ©2025 Diamond Certified Resource

 - Gray Plumbing Inc

Diamond Certified Expert Contributor Advice & Tips

Jeff Gray is owner of Gray Plumbing Inc, a Diamond Certified company. He can be reached at (707) 456-7939 or info@grayplumbing.com.

Jeff Gray is owner of Gray Plumbing Inc, a Diamond Certified company. He can be reached at (707) 456-7939 or info@grayplumbing.com.

Jeff Gray: Pipeline to Success


By Matt Solis, Editor



Economic factors may have forced Jeff Gray’s hand when it came to switching careers in the early 2000s, but instead of getting discouraged, he used that turbulent time as an opportunity for growth. “I got into the plumbing industry during the dot-com bust after the birth of my youngest son,” he explains. “I had the choice of becoming either a stockbroker or a plumber, and when I talked to my parents about it, they said, ‘If you become a plumber, you’ll alwa...

Read Full Article - Jeff Gray: Pipeline to Success

Gray Plumbing Inc Website and External Feeds

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Gray Plumbing Inc Ratings and Survey Responses (reviews)

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Gray Plumbing Inc
74 SURVEYS
  • 4.8
  • star image
  • star image
  • star image
  • star image
  • star image
3 CONSECUTIVE YEARS
SINCE NOVEMBER 2023
CERT 2741

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
Gray Plumbing Inc

Based in Fairfield, CA

4.8 avg. star score from 74 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. Gray 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.