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Asap Plumbing vs Dittmann Plumbing
San Mateo Plumbing Contractors Comparison · Updated March 2026
A veteran contractor with 50 years of experience and workers comp faces off against a two-year newcomer without liability coverage.
| Asap Plumbing | Dittmann Plumbing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 3.9 |
| Years Licensed | 2 years | 50 years |
| License # | 1113916 | 311169 |
| Workers' Comp | — | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | South San Francisco, CA | San Mateo, CA |
| Website | — | www.dittmannplumbing.com |
Key Differences
What Customers Say
Dittmann Plumbing
Customers consistently mention detailed explanations of work processes, punctual arrivals, and responsive communication throughout service calls.
Key Takeaway: Dittmann has documented customer feedback showing reliable service patterns across diverse project types, while Asap has limited review history to assess actual performance or customer satisfaction.
Customer Reviews
Asap Plumbing
No reviews available
Dittmann Plumbing
Always responsive in a timely manner and reasonable.
It was a pleasure doing business with the folks at Dittman. They are punctual, knowledgeable, efficient, and professional. Don and Dave helped snake the kitchen drain, Maria answered my many questio...
These fellas know what it takes to resolve most every plumbing issue!
Consider Asap Plumbing if...
- ✓ You're working with an extremely tight budget and are willing to accept higher risk in exchange for potentially lower pricing from a newer market entrant
- ✓ You've confirmed your homeowner's insurance will cover contractor injuries and you're comfortable with that liability exposure
- ✓ You're handling a very simple repair where decades of experience won't materially impact the outcome
- ✓ You've personally verified recent references and are satisfied with the company's capabilities for your specific project
Consider Dittmann Plumbing if...
- ✓ Your plumbing issue involves an older home where hidden problems often emerge during repairs and you need someone who can diagnose and adapt quickly
- ✓ You want workers compensation coverage protecting you from liability if someone gets hurt on your property
- ✓ You're dealing with an emergency situation like a flood where Dittmann has documented experience coordinating repairs and rebuild work
- ✓ You value demonstrated reliability and want feedback from actual customers about communication, punctuality, and problem-solving abilities
Questions to Ask Before Hiring
- → For Asap Plumbing: Ask directly about liability coverage and confirm with your homeowner's insurance whether contractor injuries would be covered under your policy
- → For Asap Plumbing: Request references from at least three recent projects similar in scope to yours, and follow up with those homeowners
- → For Dittmann Plumbing: Some customers noted higher-than-expected pricing on installations, so ask for detailed written estimates with line-item breakdowns before committing
- → For both: Ask how they handle unexpected complications discovered during work and whether their initial estimate would change
The Bottom Line
Unless budget constraints are severe and you've verified your homeowner's insurance covers contractor injuries, Dittmann Plumbing is the clearer choice for most homeowners. You get 50 years of experience diagnosing complications, full workers comp protection from liability, and customer feedback confirming responsive, punctual service across everything from routine repairs to emergency floods. Some customers noted higher pricing on installations, so get detailed written estimates, but the protection and proven capability justify a reasonable premium. Asap may work for very simple repairs if you're comfortable with the insurance gap, but verify references carefully and confirm liability coverage before proceeding.
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Frequently Asked Questions
It matters significantly when problems don't go as planned. A veteran contractor has seen thousands of variations of your issue and can quickly diagnose hidden damage, navigate unexpected code complications, or source parts for older systems. For straightforward fixture replacements, the gap narrows, but for anything involving diagnosis or older homes, experience directly impacts outcomes.
If a worker is injured at your home, their medical bills and lost wages could become a claim against your homeowner's insurance, potentially raising your rates or exhausting coverage. Before hiring any contractor without workers comp, call your insurance agent to understand your specific exposure and whether you're comfortable with that risk.
Dittmann's pricing concerns mentioned in reviews were specifically about installation projects, not all services. You're paying for insurance protection, five decades of problem-solving experience, and documented reliability with punctual, communicative service. Whether that premium is worth it depends on your project complexity and risk tolerance, but request quotes from both to compare actual numbers.
Every established company was once new, and newer contractors can offer competitive pricing and eager service. However, with Asap you're accepting two significant risks: no workers comp liability protection and limited track record to predict reliability. If you choose this path, verify insurance coverage thoroughly and check multiple references from recent similar projects.
Looking for the Best?
See our ranked list of top plumbing contractors in San Mateo.
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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 10, 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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