Our Team

Who we are

Koss design+build is an architect led construction and design firm dedicated to timeless design & sustainable building.  The aesthetics of our projects are based on providing a true sense of place while representing the lifestyles and goals of our clients.  The construction of our projects is based on leading building science strategies and proven high performance building techniques.  Providing both design & contracting services allows us to control cost & quality throughout the duration of the project, while creating finely detailed homes & buildings.  All projects, regardless of size and budget, are rooted in sustainable ideals conceptualized during design & brought to life in the build process. 

Erik Koss



Koss design+build founder, Erik Koss is a licensed architect, contractor, LEED accredited professional and PHIUS certified builder.  Erik received his Bachelor’s in Architectural Studies from the University of Illinois and in 1995 came to Arizona to pursue a Master’s in Architecture and a separate Master’s in Construction Management.  Erik’s uncompromising belief in a true design build process is what guides KDB today.

Erik has numerous years of experience in the planning, design and construction of various building types, with a focus on high end residential projects.  Erik’s success is based on client interaction & satisfaction along with a commitment to timeless, modern design, quality construction and sustainable building. Erik brings his collective design experience and technical knowledge to every project through creative, viable design & construction solutions.



Carlos Ceballos focuses on architectural design and project management. Carlos received his bachelor’s degree in architecture from the University of Guadalajara, Mexico and further completed studies in Architectural Design at the University of Stuttgart, Germany. Carlos has 10+ years of national and international experience, with projects developed in Mexico and the United States. His experience has provided him with a unique perspective that draws on high performance German design and classic Mexican modernism. Carlos believes in creating projects that truly celebrate the goals and lifestyles of our clients as well as the power of collaborating with the entire design+build team. Outside the office, Carlos is an avid international traveler and also enjoys mountain biking and great tacos.



Charles Dustin Frey, ‘Dusty’ made his way to the desert in 2015 after working for over a decade in the Southern California and Seattle area construction markets. Dusty is a hands-on construction manager with experience working on finely crafted homes as well as residential estates. Dusty has extensive experience working on challenging hillside projects and dealing with the needs of sophisticated clients with demanding builds. Beyond his attention to detail, Dusty believes in the power of collaboration and the importance of client communication and interaction for a successful design+build project. A true outdoorsman, when not enjoying the great Arizona countryside, Dusty can be found spending time with his wife and young children.



Alan Palermo, a native New Yorker, found his way to Arizona in 2019.  Alan earned his Bachelor of Science in Architecture from the University of Buffalo before moving onto his Master of Architecture degree from the University of Kansas’ rigorous Studio 804 building program.  After spending time in the construction industry in New York, Alan moved to Phoenix to join KDB in his pursuit of working in a truly collaborative design+build environment.  Alan’s pride in craftsmanship, attention to detail and unending work ethic ensure that every build project he leads is a true success.  Alan has become a KDB leading resource in the areas of sustainable building and Passive House construction.  In his free time Alan enjoys getting together with friends to mountain bike, trying new food & beverage venues along with designing and building furniture.



Casey Cyr has a diverse background in computer science, heavy equipment and general finish carpentry making him a great resource on all of our projects. Casey excels at taking care of time sensitive field issues and technical details needed to get our projects across the finish line while helping with construction management.



Brittany Harm, another native New Yorker on our team, made her way to Arizona after stops in California and Texas.  Brittany has over ten years of experience in accounting and customer service.  She works closely with clients, subcontractors, vendors, and lending institutions as well as general office management.  When Brittany is not crunching numbers, she enjoys spending time with family, devouring a good book, obsessing over dragons, and whipping up something delectable in the kitchen.



Cesar Lopez-Rodriguez is a design+build associate. He holds a dual Bachelor’s degree in Architecture & Construction Management from Arizona State University. Cesar believes that a true integration of design and construction leads to the most successful projects and focuses on that simple, yet powerful principle in his work at KDB. In his free time Cesar is an ardent world traveler and loves checking out the newest in tech.



‘Hali’ is KDB’s good will ambassador and director of relaxation.  When not lounging around the office or inspecting jobsites, Hali enjoys long walks on the beach, fetching tennis balls and wet kisses.