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Empowering Today’s Plumbers
About Us
Sigillo Supply, Inc. is a woman-owned and family-run, plumbing and industrial supply company located within the San Francisco Bay Area. Since 1993, we have proudly served plumbers, contractors and engineers with plumbing supplies, parts and fixtures. We are located in the Bayview district of San Francisco and make daily deliveries within the city and neighboring counties of San Mateo, Marin, Santa Clara and Alameda.
Our HistoryDominic Sigillo grew up in San Francisco and began his career in the plumbing industry as a delivery driver for Cal-Steam. In the early 1990s, the plumbing sector took an economic downturn and Dominic was let go from his position in sales. Although Dominic was raising a young family, he also understood a good opportunity. With the years of experience and the relationships he built, Dominic Sigillo decided to start his own plumbing supply company. Sigillo Supply Inc. officially opened its doors in August of 1993. Gina Sigillo, Dominic’s daughter, joined Sigillo Supply, Inc. in 2010 to help develop the family business. After her father’s passing in 2017, Gina took over the business, carrying on the knowledge and expertise San Francisco Bay Area plumbers, contractors and engineers have known for nearly 30 years. With a strong team of plumbing veterans alongside her, Sigillo Supply, Inc. continues to serve and build on both new and established relationships.
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Professional Organizations
Sigillo Supply is a member of the Plumbing Heating Cooling Contractor of San Francisco (PHCC), American Supplier Association (ASA), Western Supplier Association (WSA), and IMARK Group.
Our MissionOur mission is to work in partnership with our customers to meet their plumbing and industrial needs, no matter how big or small. We do this through our 20 years of knowledge and expertise in the plumbing supply industry and through our exceptional service. By providing high quality and reliable products and services, we invest in our customers’ success and future every day. Ultimately, we strive to operate our organization with integrity through honesty, transparency and respect, not only for our customers but also within our business. We Deliver!We deliver to San Francisco, San Mateo, Marin, Santa Clara and Alameda counties. Please contact us through our online form or call (415) 822-1780 to schedule your delivery.