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BDS Plumbing vs Marelich Mechanical
Contra Costa Plumbing Contractors Comparison · Updated March 2026
Two veteran contractors with nearly identical qualifications, separated mainly by trade specialization and three years of experience.
| BDS Plumbing | Marelich Mechanical | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 30 years | 27 years |
| License # | 713183 | 752638 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Walnut Creek, CA | Martinez, CA |
| Website | — | www.marelich.com |
Key Differences
Customer Reviews
BDS Plumbing
This is the best plumber in all of NorCal in my opinion. It's been years, early in the owner's career that he helped us with dozens of things. What a class act. So glad they are still keeping the Bay ...
Marelich Mechanical
No reviews available
Consider BDS Plumbing if...
- ✓ Your project is strictly plumbing-focused (repiping, drain systems, water heater replacement, fixture installations) and you want a specialist rather than a generalist
- ✓ You value high owner involvement and direct oversight throughout your project
- ✓ You're located in or near Walnut Creek and prefer a contractor with shorter travel distance
- ✓ The additional three years of experience matters for your specific situation, such as working with older plumbing systems or complex troubleshooting
Consider Marelich Mechanical if...
- ✓ Your project involves mechanical systems beyond just plumbing, such as HVAC integration or comprehensive mechanical work
- ✓ You're located in Martinez or the eastern portion of Contra Costa County and want local service
- ✓ You need a contractor with broad mechanical trade capabilities who can address multiple system types in one engagement
- ✓ The 27-year track record provides sufficient veteran-level expertise for your project needs
Questions to Ask Before Hiring
- → Ask both companies for at least three references from projects completed in the past 12 months to compensate for limited online reviews
- → Request details on who will be on-site daily and how directly the owner supervises projects, especially with Marelich Mechanical given unclear owner involvement
- → Ask how long their current crew has worked together and what their employee retention looks like
- → For Marelich Mechanical specifically, clarify whether they handle plumbing directly or subcontract it out, and confirm expertise in your specific project type
The Bottom Line
Both contractors meet professional standards with veteran-level experience, proper insurance, and bonding. Your decision should center on trade specialization: choose BDS Plumbing if your project is plumbing-specific and you value documented high owner involvement, or choose Marelich Mechanical if you need broader mechanical trade capabilities or prefer their Martinez location. The three-year experience difference is minimal at this veteran level. Because both have limited review history, invest time requesting and checking recent references before signing with either company. Neither presents red flags, but neither offers the reassurance of extensive customer feedback either.
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Frequently Asked Questions
For most standard plumbing projects, both 27 and 30 years represent veteran-level experience that's more than adequate. The difference becomes relevant mainly if you have an older home with unusual plumbing configurations or need someone who's seen every possible complication. In practical terms, both have navigated multiple generations of code changes and technology shifts.
Yes, this is the most meaningful distinction. If your project is purely plumbing-focused, BDS Plumbing's specialization ensures their entire operation is optimized for plumbing work. If you need HVAC integration, gas line work alongside plumbing, or other mechanical systems addressed, Marelich Mechanical's broader scope could be more efficient than hiring multiple specialists.
It's a legitimate concern that requires you to do more due diligence directly. Both companies have decades of licensure without disciplinary issues, which is positive, but you'll need to request recent references and speak with past clients yourself. Ask each company why their online presence is limited and how they typically get new business.
Location affects response time for emergencies and may influence travel charges for smaller jobs. If you're in Walnut Creek, BDS has proximity advantage; if you're in Martinez or eastern Contra Costa, Marelich is closer. For major planned projects, the 15-20 mile difference between their bases is less significant than for urgent service calls.
Looking for the Best?
See our ranked list of top plumbing contractors in Contra Costa.
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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 12, 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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