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Let’s talk

Let us help you make your project a reality! To get started, reach out—I look forward to connecting with you and learning more about your project!

35 Miller Ave., #191
Mill Valley, CA 94941


A Message from Karl Hasz

As the founder of Hasz Construction, I have been personally involved with every project over the last 18 years, striving to make the process seamless and successful for every team member. I embrace the process of envisioning what a space will look like, how staff will utilize it, and how customers will flow through it. Our approach focuses on fostering a partnership, rather than solely functioning as a hired service. My dedication to efficiently navigating through the construction process from project conception to completion provides each customer with the best quality build-out for the best value, in the shortest timeframe.