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About

Important information

  • Additional Info:

    Flow Masters Plumbing began with a simple goal—to provide reliable plumbing and heating services to the San Francisco community. Co-founders Alan Moran and Fergal McMahon brought their experience from both the U.S. and Ireland, building the company from a few loyal clients into a well-established local business. 

    FMP take pride in our involvement with the community, from participating in industry training programs to supporting sustainable plumbing practices. As sponsors of the *San Francisco Giants Yearbook 2024*, we value our connection to the city. Whether serving homeowners or businesses, we appreciate the opportunity to contribute to the community we call home.

About This Business

Flow Masters Plumbing is a licensed plumbing company providing services for residential and commercial properties in the San Francisco Bay Area. Our team offers installation, maintenance, and repair solutions, including work on heat pump water heaters, Electric and tankless water heaters, radiant boiler systems, drain cleaning, leak detection, water filtration, and general plumbing needs. We strive to complete each job with attention to detail while following industry standards and best practices.


Customer satisfaction is important to us, and we aim to provide clear communication, upfront pricing, and professional service. We work to assess plumbing concerns thoroughly and offer practical solutions to help address our customers' needs. Flow Masters Plumbing operates with a focus on ethical business practices, safety, and service reliability.



BBB Accredited Since: 2/4/2025

Years in Business: 14

Products and Services

Complete Range of Plumbing Services for San Francisco Bay Area Homeowners and Businesses.  Providing comprehensive offerings in plumbing services for both residential and commercial properties.  Including but not limited to:
Drain Cleaning
Sewer Line & Pipe Inspection and Repair/Replacement
Emergency Plumbing Services
General Plumbing Service/Installation and Repair
Water Heater Repair/Replacement
Heat Pump Water Heater
Whole House Water Filtration
Hydro jetting
Trenchless Sewer Line Repair
Water Leak Detection and Repair
Backflow Testing & Installation
Sump Pump Installation/Repair
Whole-house Re-piping
Tankless Water Heater Repair/Installation
Gas Line Installation & Repair

Business Details

BBB File Opened:
8/4/2020
Business Started:
10/4/2011
Business Incorporated:
7/18/2011
Type of Entity:
Corporation
Business Management:
Mr. Alan Moran, Owner
Number of Employees:
17

Additional Contact Information

Customer Contacts
Mr. Alan Moran, Owner
Additional Email Addresses
Primary: Email this Business

Licensing information

This business is in an industry that may require professional licensing, bonding or registration. BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.

BBB records show a license number of 966337 for this business, issued by Contractors State License Board. The expiration date of this license is 10/31/2027.

Contractors State License Board

9821 Business Park Dr

Sacramento CA 95827

  • California Contractor Stage License Board:

    License C-16 & C-36 #966337


Additional Information

Payment methods
  • Cash
  • Check
  • Credit Card
  • Debit Card
  • ACH
  • American Express
  • Discover
  • MasterCard
  • Visa
  • Financing
  • Invoice
  • Certified Check
  • Money Order
Other Resources
Contractors State License Board
9821 Business Park Dr
Sacramento CA 95827
Phone Number: (800) 321-2752
http://www.cslb.ca.gov

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