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Dittmann Plumbing vs Gotelli Plumbing
San Mateo Plumbing Contractors Comparison · Updated March 2026
Two veteran plumbers with essentially identical credentials separated primarily by service approach and communication consistency.
| Dittmann Plumbing | Gotelli Plumbing | |
|---|---|---|
| Rating | ★ 3.9 | ★ 3.4 |
| Years Licensed | 50 years | 53 years |
| License # | 311169 | 284740 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Mateo, CA | Brisbane, CA |
| Website | www.dittmannplumbing.com | — |
Key Differences
What Customers Say
Dittmann Plumbing
Customers consistently mention detailed explanations of work processes and punctual arrival times, with technicians taking time to walk homeowners through each repair step.
Gotelli Plumbing
Feedback highlights responsive emergency service and thorough job site practices like protective floor coverings, but multiple reviews flag concerns about missed appointments and follow-up communication gaps.
Key Takeaway: Dittmann earns praise for communication consistency and reliability, while Gotelli receives specific complaints about appointment no-shows and follow-up issues despite strong emergency response capabilities.
Customer Reviews
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!
Gotelli Plumbing
Guys arrived on time, wore protective booties to keep floor clean, and quickly fixed my leaking trap pipe cleaning up thoroughly before leaving. They gave me great advice on another drippy bathroom f...
Fantastic service! Solved a mysterious house leak. I am always going to call Gotelli for my plumbing issues.
Bernardo and Felipe just came out to fix a problem with a sink and a problem with the dishwasher. As always, they excelled. While they were here, they also fixed faucet knobs in three different bathro...
Consider Dittmann Plumbing if...
- ✓ You value technicians who explain the work process step-by-step and prefer understanding what's happening with your plumbing system rather than just getting a quick fix.
- ✓ Punctuality matters significantly to your schedule, and you need a plumber who arrives as promised without follow-up calls.
- ✓ You're prepared to potentially receive higher quotes but want consistent, communicative service without appointment reliability concerns.
- ✓ Your project involves complex diagnostics where detailed explanations would help you make informed repair decisions.
Consider Gotelli Plumbing if...
- ✓ You need emergency plumbing response and prioritize a company known for quick arrival times during urgent situations like leaks or floods.
- ✓ Job site cleanliness is important to you, and you appreciate contractors who protect floors and clean thoroughly after completing work.
- ✓ You're comfortable being proactive with follow-up communication and confirming appointments rather than expecting the company to initiate contact.
- ✓ Your project consists of straightforward repairs where fair pricing for basic work matters more than extensive communication.
Questions to Ask Before Hiring
- → What is your typical response time for emergency calls versus scheduled appointments, and how do you communicate if delays occur?
- → Can you provide an itemized written estimate before starting work, and what factors might change the final price?
- → How do you handle appointment confirmations and follow-up communication after completing the initial repair?
- → Can you provide references from customers who had projects similar to mine in scope and complexity?
The Bottom Line
Neither company has a clear credential advantage—both bring identical financial protections and veteran-level expertise to your project. Choose Dittmann if you prioritize punctuality, detailed communication, and appointment reliability, accepting that some customers find their pricing higher. Choose Gotelli if you need emergency response or value meticulous job site cleanup, but be prepared to confirm appointments proactively and follow up yourself. For straightforward repairs, either can handle the work competently. For complex projects requiring ongoing communication, Dittmann's feedback pattern suggests fewer frustrations.
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Frequently Asked Questions
Not meaningfully. Both companies have operated for over 50 years, giving each deep familiarity with San Mateo County plumbing systems, code evolution, and problem-solving across multiple generations of infrastructure. Three years is negligible when comparing veteran-tier contractors with this tenure.
Customer feedback suggests Dittmann has more consistent punctuality mentions, while Gotelli has specific complaints about no-show appointments and follow-up communication gaps. If appointment reliability is critical to your schedule, ask each company directly about their confirmation process and typical arrival windows.
Dittmann receives some feedback about higher-than-expected quotes for installations, while Gotelli earns mentions for fair pricing on straightforward repairs but also has comments about pricing structure changes. Request detailed written estimates from both before committing, and ask what circumstances might increase the quoted price.
Gotelli receives specific praise for responsive emergency service and prompt arrival during urgent situations. Both companies handle emergencies, but if you're dealing with an active leak or flooding, Gotelli's feedback pattern specifically highlights this strength.
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 07, 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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