Compare Local Pros
Occidental Power vs Arch Plumbing
San Francisco Electrical Contractors Comparison · Updated March 2026
You're comparing a specialized plumber with strong customer feedback against a veteran general contractor with virtually no review history.
| Occidental Power | Arch Plumbing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 36 years | 13 years |
| License # | 591549 | 976019 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Francisco, CA | San Francisco, CA |
| Website | www.oxypower.com | archplumbinginc.com |
Key Differences
What Customers Say
Arch Plumbing
Customers consistently highlight Arch Plumbing's punctuality, clear communication, thorough diagnostics, and professional execution with technicians who explain issues before starting work and maintain clean work areas.
Key Takeaway: Arch Plumbing provides extensive verifiable customer feedback demonstrating operational strengths, while Occidental Power operates with virtually no public review visibility despite three decades of licensing.
Customer Reviews
Occidental Power
No reviews available
Arch Plumbing
Anthony and Arch Team are the best! They installed a heater for our tenant and did an amazing job! Anthony kept us in the loop from start to finish. We've used them for all plumbing needs, now I'm so...
Called them on a late Saturday evening for a clogged toilet problem. Carissa and Eric showed up and wow! They were so thorough with their jobs. The basically took the whole toilet out and did such a c...
Gerson Rustrian was my Service Technician and Very Professional and well knowledgeable. My main water pipe was broken and he was able to repair and replace parts on this evening emergency. Thanks Arch...
Consider Occidental Power if...
- ✓ Your project falls outside standard plumbing work and requires general contracting expertise that a specialized plumber cannot provide
- ✓ You value maximum licensing tenure and business longevity above current customer feedback when selecting a contractor
- ✓ You're willing to conduct additional due diligence through direct references since public review history is limited
- ✓ The project scope or requirements align with whatever services Occidental Power actually specializes in, which you'll need to clarify directly
Consider Arch Plumbing if...
- ✓ Your project involves any standard plumbing work including water heaters, drains, toilets, leaks, pipes, boilers, or heating systems
- ✓ You want documented evidence of punctuality, professionalism, and communication before making your decision
- ✓ Emergency or after-hours service availability matters for your situation, as Arch Plumbing has demonstrated weekend and emergency responsiveness
- ✓ You prefer working with a contractor whose service technicians have established patterns of explaining problems clearly and maintaining clean work areas
Questions to Ask Before Hiring
- → Ask Occidental Power what services they actually specialize in and request references from recent projects similar to yours to compensate for limited public review history
- → Ask Occidental Power how long their current crew has been together and what their typical response time is for project estimates and service calls
- → Ask Arch Plumbing about their specific experience with your type of plumbing issue and whether it falls within their standard service scope or requires specialized expertise
The Bottom Line
If your project involves plumbing work, Arch Plumbing is the clearer choice this week. Their 13 years of focused plumbing expertise, combined with consistent customer feedback showing punctuality, professionalism, and thorough diagnostics, gives you verifiable confidence in what to expect. Occidental Power's 36-year licensing tenure demonstrates business longevity, but without clarity on their service focus or current customer experience patterns, you're making a decision with significant information gaps. Consider Occidental Power only if your project falls outside plumbing specialization or if you're willing to invest time gathering direct references to compensate for limited review visibility. For standard plumbing needs requiring reliable execution this week, Arch Plumbing presents documented evidence of consistent service delivery.
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Frequently Asked Questions
Licensing longevity demonstrates business survival but doesn't guarantee current service quality or customer experience. Arch Plumbing's 13 years still qualifies them as established with plenty of time to develop expertise in San Francisco's building infrastructure. The more practical concern is that Occidental Power's limited review history makes it harder to verify how they actually operate today, while Arch Plumbing has documented patterns of reliable service execution.
This depends entirely on what Occidental Power actually does, which isn't clearly defined in available information. As a general contractor, they may have plumbing capabilities or they may subcontract that work. You'll need to ask directly about their plumbing experience and whether they employ licensed plumbers on staff. For standard plumbing projects, a dedicated plumbing company like Arch Plumbing typically offers more focused expertise.
Licensing and insurance protect you legally, but they don't tell you whether technicians show up on time, communicate clearly, diagnose accurately, or clean up properly. Customer reviews reveal operational patterns that credentials alone cannot. Without this visibility, you're making a decision with significantly less information about what your actual experience will be like when they arrive at your home.
Customer feedback indicates Arch Plumbing serves property managers, housing organizations, and commercial facilities alongside residential customers, suggesting they handle projects beyond single-family homes. Their documented work includes building-wide systems like boilers and backflow systems. For specific commercial project requirements, ask about their experience with similar facility types and project scales.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 11, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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