Tanya Shively, ASID

Principal Interior Designer and Owner

I was raised next door to the Grand Tetons in Wyoming, and the Mountain West is where my love and appreciation for hard work, nature, and environmental stewardship is rooted.

I founded Sesshu Design Associates in 2005 with the belief that healthy and sustainable homes should be the standard. I have built my reputation as a designer creating healthy homes in Scottsdale, Arizona by using materials that are free of the toxins that can bring on respiratory problems, allergic reactions, headaches, and other health issues for the home's inhabitants.

While healthy and good for you, these materials come without compromise in quality or finish. I am dedicated to designing interiors that support how you live, so your home becomes a sanctuary for resting, relaxing, and enjoying life.

I introduced WELL Designed™ homes to promote much-needed healthy and sustainable practices throughout the construction and design industries. It's not just "green" design: the WELL Designed™ home inspires you in living well.

My accreditations include ASID, NCIDQ, and LEED, and my emphasis is on designing award-winning healthy homes for an elite clientele across the West: Arizona, Colorado, New Mexico, Wyoming, Montana, Idaho, and Utah.


What is Sesshu

The name Sesshu signifies innovation and passion in powerfully executed designs, characterized by an individuality of outlook. It was inspired by the great 15th Century Japanese artist, Sesshū Tōyō. It translates as temperance, or restraint – a hallmark of our design philosophy.


Your perfect home reflects your personality, your lifestyle and your priorities… and it all starts with the right plan.


Innovative, Timeless, and Sustainable

The WELL Designed™ approach is about creating spaces that support and enhance your wellness and wellbeing. A healthy home is our foremost concern when designing either a renovation or new custom home. What is healthy for you and your family is frequently better for the planet as well, and we believe in being eco-conscious in our selection of materials.

Ultimately a livable type of luxury is what you might call "our style". It may be a modern city townhouse, a casual beach get-away cottage, an elegant estate home, or a rustic mountain retreat, but it will always be WELL Designed™.

Each of us at Sesshu Design Associates, Ltd is passionate about bringing beauty into the world by creating a sense of place through quiet, elegant details. We create WELL Designed™ homes that are tailored to your taste and lifestyle. Your personality should shine through in every space, making your home truly your own.


We start with a Next Steps call to understand your vision and needs. This 20-minute phone conversation is designed to understand where you are in your process, and help you determine the best way to move forward.

If appropriate, we will schedule a Design Discovery Review to begin to develop the scope and preliminary concepts for your project. At this step, we help you understand your interior design goals from the outset by studying your tastes, preferences, and lifestyle to understand your desires.

As we begin working together, using our collaborative EcoLuxe Design Process™ we guide you in creating a home that is even better than you imagined. You are involved as much – or as little - as you want to be, from the first day to the final move-in.


We believe an important part of a successful life is giving something back in gratitude for that which we have been given. Therefore, we donate a portion of our profits to the following organizations:

  • National Park Foundation
  • The Leukemia & Lymphoma Society
  • Earthjustice
  • Habitat for Humanity