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Lisa Barter Portrait 3i Design offers interior architecture and lighting design services.
With nearly twenty years of design experience and and a dynamite team of talented designers, we offer vivid, inspired solutions that fit your project and budget. We are committed to helping you achieve your design goals while enjoying the process.

Principal Lisa Bartlett (Barter) studied interior architecture in Texas, and brings extensive experience in interior design, architecture and lighting design to each project. Hailing from a family of doctors and engineers, she enjoys marrying art and science by giving equal emphasis to the creative and technical aspects of design. She formed 3i Design in 2005 out of a desire to offer integrated services with a high level of principal involvement. Lisa is passionate about the impact of artificial and natural light on human health and behavior, a topic on which she has presented in various settings. She is licensed as an architect, certified as an interior designer, and is a LEED accredited professional.

Licensing and Certification:

Licensed Architect, Colorado and Maine
Nationally Certified Interior Designer,
National Council for Interior Design Qualification
LEED Accredited Professional
SBA-Certified Woman Owned Small Business and
Economically Disadvantaged Woman Owned Small Business
City and County of Denver SBE/WBE/DBE


International Dark Sky Association
United States Green Building Council Presenter
IES Certified CEU Provider
ASID Certified CEU Provider
AIA Western Colorado Intern Development Coordinator, Western Region
Denver Lighting Examiner

Here’s What Our
Clients Say:
"Lisa took my vision and added her expertise to create exactly what I wanted."
- Charles D. Alexander, DDS, MSD, Montrose, Colorado

“I was Chairman of the Board of our regional hospital when I first worked with Ms. Barter on the design and construction of a critical dialysis treatment center. Her work was outstanding, on time, in budget, and a great success for our project.”
- Jack Dooley, President, Dooley Project Management and Construction Services, Montrose, Colorado

  “Lisa listened carefully to what I needed and wanted. I've been very happy with the results.”
- Pamela Plumb, former Mayor, City of Portland Maine
  “When you select Lisa for your project, be prepared for a final product that can only be achieved through exceptional vision, practical knowledge and intense effort.”
- John Firestone, Managing Director, FRS Design Group, Inc. Fort Worth, Texas


“Lisa fosters a seamless relationship between design and build.”
- Steve Hill, Owner, Brohill Realty Company, Pleasanton, Texas


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