KOSS design+build


Our architectural philosophy is simple. Modern design for today, tomorrow, for beauty and fun. Let the planet and the people in it inspire you.


A balance between time, money and craftsmanship, controlled through organization, teamwork and experience. Open book accounting, we earn your trust.


We design it. We build it.
A single point of accountability created through a union of architecture, interiors and construction. All of these pieces play their part in creating homes that are celebrated by those who live in them.

KOSS design+build is an architect lead building team dedicated to timeless design and sustainable building. Founder, Erik Koss, is a licensed architect, contractor and LEED accredited professional that has numerous years of experience in the planning, design and construction of custom residential and specialty commercial buildings. KDB`s success is based on client interaction and satisfaction along with a commitment to modern design, quality construction and sustainable building.


Our work is founded on a commitment to our client’s specific needs and desires which is expressed through thoughtful design and construction methods.

What we are doing

how we work



Give us a call, let’s talk and meet, preferably at your project site. We promise it will be painless for you and your checkbook – it’s free. This meeting is for us to get to know each other and really get a feel for your project and goals. Once you are confident about working with us, we’ll put together a proposal for your project. When we have a signed contract and small retainer all systems are go!


During the design phase we’ll create a program outlining the elements and size of your project along with a zoning and code analysis. Once these items are complete we move on to schematic design, where the design concept for your project is created. Next is the design development phase where we fine tune the design and work through initial engineering concepts and crucial design details. During the design phase we also have the option to create a preliminary cost estimate for the project.


The documentation phase is where we create the documents that will be used to build, estimate and permit your project.


Budget, schedule and craftsmanship meet design as we break ground and begin construction.


Move in and enjoy

What our clients say

Some Fun Facts

Designed gallons of annual water savings
LED lights installed
Rattlesnakes relocated
Finger pointing between Architect and Builder

Let's talk


KOSS design+build

  • PHOENIX, AZ 85028
  • 602.374.5757