About Us

Sandy Campbell is the founder and owner of One Earth One Design and the new company Entero Design, which specializes in sustainable interior design services for both commercial and residential projects. Her over 18 years of experience includes residential remodel and new construction, tenant improvement, education, medical and hospitality design projects.

One Earth One Design Commecial Projects:

  • One Earth One Design: 3000 sq. ft. tenant improvement/retail
  • Tahoma Capital: 5000 sq. ft. tenant improvement

Sandy Campbell's previous commercial work:

  • Whidbey General Hospital: renovation/addition
  • Prune Hill Elementary School: new construction
  • Renton High School: renovation/addition

Residential Achievements:

  • 2005, winner of Annual Builder's Choice Design and Planning Award.
    Project: Habitat for Humanity - Roxbury Estates, Seattle, WA
  • 2004 Parade of Home, Best in Show - Remodel Home
    Project: BuiltGreen Kitchen remodel, Bainbridge Island, WA


  • Seattle Times, Diggs, "As green as it gets", by Nicole Tsong, Jan, 2007
  • The Journal, Business Watch, Jan. 2007
  • Seattle Times, "My First Job", Nov. 2006
  • Seattle Metropolitan, Greentrepreneurs, Oct. 2006
  • Green Interiors Magazine article "Sweet Talker" by Enette Ngoei, April 2006
  • Seattle Home and Lifestyles magazine project feature, "For Earth's Sake" by Allison Lind, Oct. 2005
  • Seattle Times, Home/Real Estate section, "Eco-friendly paint and materials make it easier for homeowners to be kind to the environment and their own health: by Elizabeth Rhodes, March 21, 2004

Workshops and Presentations:
Sandy speaks regularly to both industry and consumer audiences, including:

  • One Earth One Design - Inside green, ASID series, May 2007
  • One Earth One Design - Spring Cleaning seminar, March 2007
  • One Earth One Design - Eco-remodeling seminar, Jan 2007
  • Seattle Central Library, Seattle, WA - Public Presentation, Green and Healthy for Kids, May 2005
  • AIA - What makes It Green? Panelist, Seattle, WA April 2005
  • Master Builders Association of King & Snohomich Counties (MBA-KS)
    BuiltGreen Conference, Seattle, WA - workshop on sustainable countertops, March, 2005
  • Cornish College of the Arts - guest speaker, Seattle, WA Fall 2004
  • Bellevue Community College, Bellevue, WA - guest speaker, "Introduction to Environment Interior Design", Spring 2003, Fall 2003
  • Environmental Home Center, Seattle, WA - seminar speaker, "Sprucing Up for the Holidays the Green Way", Fall 2002
  • Environmental Home Center, Seattle, WA - seminar speaker, "Sustainable Flooring Workshop" Spring 2002

Professional Affiliations:

  • Member - US Green Building Council (USGBC), 2003, 2004, 2005, 2006
  • Member - International Interior Design Assoc. (IIDA), Northern Pacific Chapter, 2000-2006, board member - VP of Communications 2003-2004
  • Director - GreenWorld, a community forum on sustainable design, 2002
    Coordination of a certified wood panel discussion and a sustainably managed forest site tour, a carpet panel discussion, and coordination of keynote speakers. Committee member, 2000-2005
  • Member - Northwest Eco-Builders Guild, 2000-2006
    Research on plants and soil for a green roof project, 2001


  • NCIDQ Certified
  • LEED Accredited Professional

Continuing Education:

  • IIDA Sustainable Forum Workshop, Seattle, WA - "Peeling Back the Eco-label, May 2006
  • Lighting Design Lab, Seattle, WA - Modern Solar Design, Nov 2005
  • Lighting Design Lab, Seattle, WA - Emerging Technology, Nov 2005
  • Seattle Design Center, Seattle, WA - LED Technology, Sept 2005
  • GreenWorld forum, Seattle, WA, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
  • AIA - What Makes it Green?, Seattle, WA 2005
  • Sustainable Living Conference, Olympia, WA, Feb 2004
  • GreenBuild conference and expo, Austin, TX, Nov 2002, Pittsburgh, PA, Nov 2003, Portland, OR, Nov 2004
  • MBA BuildGreen conference, 2002, 2005, 2007
  • EnvironDesign 6, Seattle, WA, April 2002
  • Earth Wise Design: Life Cycle Assessment workshop, Seattle, WA, April 2002
  • Lighting Design Lab, Seattle, WA - Daylighting course, Sept-Dec 2000
  • LEED Consultant: session on materials and resources, Seattle, WA, Oct 2000