24/7 Emergency
9.3

One Source Plumbing and Rooter

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350 Bay Street, 100-178, San Francisco, CA 94133 13 Years in Business

Bay Area Service Hub Review

Operating since 2013, this San Francisco-based contractor specializes in trenchless sewer replacement and emergency plumbing repairs. Reviews consistently highlight owner Mostafa 'Mo' Sowadah's personal involvement and ability to diagnose complex issues that other plumbers miss. Best for homeowners needing urgent, high-stakes repairs where expertise and long-term reliability matter more than the lowest bid.

Evaluation Scores

Workmanship
9.5
Quality of work performed
Customer Service
9.5
Responsiveness & communication
Pricing
8.5
Clear & honest pricing
Reliability
9.5
Consistency & dependability
Expertise
9.0
Technical skills & certifications
Warranty Support
9.0
Post-service coverage

Essential Q&A

What makes this contractor stand out?
Owner-operator Mostafa 'Mo' Sowadah personally oversees or performs much of the work, providing a level of diagnostic accuracy and accountability rare in larger firms.
Who should hire this contractor?
San Francisco homeowners with complex sewer or drainage issues who want a 'fix it once, fix it right' solution and value a 10-year Diamond Certified track record.
Insider tip
Ask for Mo specifically for complex diagnostics; satisfied customers frequently mention his personal expertise saved them from unnecessary repairs proposed by others.

Frequently Asked Questions

Is this contractor licensed and insured in California?
Yes. License #988995 is active, and the company carries liability insurance as verified by their Diamond Certified profile.
Does this company offer 24/7 emergency services?
Yes, they explicitly advertise 24/7 emergency availability for residential and commercial plumbing needs.
What kind of warranty is provided on their workmanship?
Data not available for verification.
Do they provide free estimates or flat-rate pricing?
Yes, they provide free written estimates and emphasize upfront pricing with no obligation.
How long has this business been serving the Bay Area?
They have been serving the San Francisco Bay Area since 2013.
Are their technicians background-checked and certified?
Yes, the owner states that all employees are screened, vetted, and non-commissioned to ensure quality service.

Platform Scorecard

Cross-platform reputation comparison

G Google
5.0 /5
7 reviews
Y Yelp
4.9 /5
113 reviews
BBB BBB
A+
0 complaints (3 yr)
Diamond Certified
Certified 10 years
108 verified surveys
Checkbook.org
0%
superior rating

Services Offered

Commercial Plumbing Drain Cleaning Gas Line Service Hydro Jetting Pipe Repair Trenchless Sewer Replacement Video Camera Inspection Water Heater Installation

Areas of Expertise

Old Home Plumbing Updates Seismic Gas Shutoff Valves Tankless Water Heaters Trenchless Sewer Replacement

Service Areas

Burlingame Daly City San Francisco San Mateo County South San Francisco

License Details

Status Active
Classifications
C-36 - Plumbing
Issue Date 2013-12-05
Expires 2025-12-31
Bond Amount $25,000
Workers Comp Active
Liability Insurance $1,000,000
Disciplinary Actions None

Verify This Information

All data sourced from official platforms

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