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Hello, neighbor!

I'm Mark Duenas, your local kitchen and bath contractor serving 
Greater Sonoma County, California. I am the owner and general contractor of Excel Custom, where it is my mission to provide a personal touch in beautifying your home, as well as building solid relationships within our community.
Read on below for more information about me, my team, and how we can serve you!
Installing Hardwood Flooring

If you're hoping to find a contractor in

Sonoma County, CA who is trustworthy, and

pays attention to detail — that will work

alongside you to make your plans come to life, then my team and I are ready to get started.

More About Mark

My story began back when my father, a plumber, would take my brothers and I to his job sites when we were young. The experience of being on a job site obviously stuck, as all of my brothers became plumbers. It, too, had an impact on me, however, when I was in 7th grade, I found woodworking, and that changed everything.


I was introduced to woodshop and quickly found my niche. Along with other hands-on classes such as drafting, it took me all the way through my senior year of high school. I won awards at the county fair for design and craftsmanship on projects, and soon I began my career in the drafting field. It wasn't long, though, that I missed working with sawdust. I started in heavy construction in 1987, building freeway bridges, and large structures, etc.

However, after purchasing my first home, I began building my stock of tools to work on my own projects, soon finding myself being asked to build for others! In 2003 I became a General Contractor and the real journey began!

The key virtue I have come to adopt as part of my operations over the years is fostering a mutual trust between myself and my clients. I am building your project, but together we are building trust and community — together beautifying your home and building a relationship.

Let's get to work!


What's wrong with giving you a schedule and actually following it? I schedule my jobs so that you have a timeline, and can count on my   start and completion dates.


As we start working together and teaming up to complete your project, open and frequent communication is key to building that trust I was talking about. That's why I am there on-site and will walk you through the entire process.


At Excel, we strive to offer the latest tech in products and programs to allow our projects to propel forward efficiently! Let me save you time, money and frustration by completing your project right — and meet industry standards — the first time.

Ready to begin a project with Excel Custom?

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