How We Work

A white van with a toilet in the back is parked on the side of the road.

Our Process

At Mammoth Plumbing, we've developed a systematic approach to delivering exceptional plumbing services throughout San Francisco and the Bay Area. Our proven process ensures consistent, high-quality results whether we're addressing a simple drain clog in Daly City or completing a comprehensive repiping project in Hillsborough. We understand that inviting service professionals into your home requires trust, which is why we've created a transparent, customer-focused experience from first contact to final inspection. Below, we outline the steps we take for every plumbing service to ensure your complete satisfaction and lasting solutions to your plumbing needs.

Our Residential Plumbing Solutions

Step 1

Initial Contact & Scheduling

We simplify getting the plumbing help you need with our streamlined booking process designed for your convenience.


  • Easy booking via phone or online request form with same-day emergency options
  • Confirmation sent with your technician's information and estimated arrival time
  • Friendly staff to answer your questions about services throughout San Francisco and the peninsula

Step 2

Professional Assessment & Diagnosis

Your technician conducts a comprehensive evaluation to identify the trustworthy source of your plumbing issues, not just the symptoms.


  • Licensed technician arrives promptly and listens carefully to understand your concerns
  • Thorough inspection using advanced diagnostic equipment to identify root causes
  • Clear explanation of findings in non-technical language, tailored to homeowners from Brisbane to San Mateo

Step 3

Transparent Quote & Recommendations

We believe you deserve complete clarity about your options and costs before any work begins.


  • Detailed, upfront pricing with no hidden fees and multiple solution options for complex problems
  • Clear explanation of pros and cons for each recommendation with a no-pressure approach
  • Customized solutions that consider the unique characteristics of homes throughout Daly City, Broadmoor, and surrounding areas

Step 4

Expert Service Execution

Our skilled technicians deliver exceptional workmanship using best practices and quality materials to ensure lasting results.



  • Protective measures to safeguard your home while work is performed by licensed technicians
  • Efficient execution with minimal disruption using premium materials and fully-stocked service vehicles
  • Consistent quality and adherence to local building codes, whether in San Bruno, Millbrae, or Burlingame

Step 5

Completion & Customer Satisfaction

We ensure your complete satisfaction through thorough testing, clear communication, and ongoing support.



  • Thorough testing of all completed work, followed by complete cleanup of the work area
  • Walk-through demonstration with practical maintenance tips to prevent future issues
  • Written guarantee on labor and materials with follow-up support for homeowners throughout Hillsborough and the Bay Area
A pipe is being installed in a hole in the ground next to a wooden fence.

Preventive Maintenance

We offer comprehensive preventative maintenance programs that help you avoid costly emergency repairs through regular inspections and timely interventions. Our technicians check for developing issues like small leaks, drain buildup, water pressure problems, and appliance wear, addressing them before they become serious problems. From Hillsborough Estates to Daly City Apartments, our maintenance services extend the life of your plumbing system while ensuring reliable performance year-round.