Designing and Installing Quality Plumbing Systems in the Bay Area since 2009

 Dan Castillo started his plumbing career in 1986 as a service technician. He quickly went into new construction and remodeling projects with local plumbing companies. After 10 years of working with these smaller companies, he joined a local plumbers union and advanced his education and experience further. Throughout his time with the union he oversaw even larger projects as a foreman and project manager. In 2009 Dan Castillo started his own company, Castillo’s Plumbing & Design Inc., and has been successfully designing and installing quality plumbing systems throughout the SF Bay Area. 

From speaking with other builders, we know that virtually everyone is concerned about quality work at an affordable price. With today's economy as it is, almost everyone is forced to look at the bottom line and fall victim to poor craftsmanship, failed inspections, and costly delays. Your reputation as a builder depends on just that, excellent quality and craftsmanship. Our company has designed and installed plumbing systems since 2009, our goal is to provide a quality plumbing service that is uncompromising in quality at an affordable price. We specialize in new construction, custom homes, remodels, and commercial plumbing. So please allow our company the opportunity to bid on your upcoming projects.

As a Plumbing Contractor, having established relationships with a broad base of contractors and vendors who provide quality services and products to us, we can provide the very best to you. Our experience allows us to offer you the professional service you want and deserve. We have the experience to complete the job with the highest standards of expertise, and have proven ourselves to be reliable and trustworthy company. Ask our clients about us, they are our most valuable resource.


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We specialize in:

  • New Construction, Custom Homes, Remodeling
  • Copper Repiping
  • Instant Hot water systems
  • Tankless water heaters
  • Pex-A-Plumb systems
  • Steel gas lines
  • Gas Tight Gas Systems
  • Trac Pipe Gas Systems