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Our Company’s Story

Guaranteed Plumbing always conducts business with the highest level of integrity and a “win-win” philosophy toward its clientele and its personnel.

We effectively ascertain the needs of our customers and employees and fulfill them with timely, friendly and professional solutions.

We continuously strive towards better efficiency, safety, production, and quality in the workplace. The representatives of Guaranteed Plumbing work toward common goals, executing our given roles and leaving open lines of communication and avenues of advancement for all.

Why Choose Us?

About Guaranteed Plumbing

Guaranteed Plumbing was founded in Danville, California in 2003 by Marcus Madrid, its Owner and President. The company began with a focus on residential service and remodel work. Through “word of mouth” references that serve as a testament to the remarkably skilled and efficient nature of its staff, Guaranteed Plumbing quickly expanded to complete a myriad of residential and commercial projects throughout the greater East Bay.

Marcus Madrid prides himself on maintaining a talented, reliable and amiable team, while also personally actively participating in every job. He remains involved from concept to completion. Realizing the long-term value of customer rapport, Guaranteed Plumbing works with its clients to provide cost-effective and creative solutions to a variety of plumbing needs. The staff extends attention to detail in each endeavor, whether it is designing and building a large-scale commercial project or changing out a kitchen faucet. To Guaranteed Plumbing, no job is too big or too small. The company continuously strives to establish new relationships with homeowners and contractors seeking a dependable, economical and experienced plumbing provider.


About the Owner

Marcus Madrid is a second-generation plumber, having learned the trade by working alongside his father since the age of 12. Marcus has been a Bay Area resident for over 30 years. He received his Bachelor’s Degree from Cal Poly San Luis Obispo.

Our mission is simple, provide exceptional customer service with a professional commitment to get the job done right, the first time!

–Marcus Madrid, Owner of Guaranteed Plumbing

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