
On all of our projects, our team’s goal is simple: To understand our clients’ vision and bring it to life with care, discipline, and craftsmanship
Our team believes in the lasting value of natural, honest materials, while also embracing proven new materials, building systems, and construction techniques. Our work is grounded in leading building science strategies and high-performance building practices, allowing us to create homes that are as durable and efficient as they are thoughtfully designed.
By providing both design and contracting services, we are able to guide each project from concept through construction with greater control over cost, quality, detailing, and execution. The result is a finely crafted home where architectural design intent, interiors and construction precision work together.

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 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 and satisfaction along with a commitment to timeless design, quality construction and sustainable building. Erik brings his collective design experience and technical knowledge to every project through creative, viable design & construction solutions.
Our Office


Our Promise
We believe the foundation of a successful project is trust. Designing and building a custom home requires countless decisions, and our promise is to guide our clients through that process with honesty, transparency, and care. We are committed to being truthful and forthcoming about costs, schedules, challenges, opportunities, and the decisions that shape the final outcome.
As both architect and contractor, we take seriously the responsibility of protecting our clients’ best interests from the first conversation through the final detail. Our role is not simply to design and build, but to provide clear guidance, thoughtful solutions, and disciplined stewardship of the project. We believe our clients deserve a team that tells them what they need to know, not just what they want to hear.

