The bank's interior, designed by Eric Smith Associates, P.C. and Communication Arts, Inc., was constructed entirely with recycled, rapidly renewable or repurposed materials; hand-crafted decors made by local artisans; energy-efficient lighting; Greenguard certified furniture, fabrics and carpet and Energy Star rated appliances. Local Drystack Sandstone was used to create a unique feature wall and wind energy supplies a portion of the bank's required power. The bank has a modular wall system constructed of more the 50% recycled content.
Earning LEED-CI certification places Flatirons Bank among an elite group of properties within the United States. Currently there is only one other bank in the state of Colorado that has secured LEED-CI Gold certification.