OTA is an Evanston, Illinois based architectural planning and interior design firm. Founded in 1984, the firm has planned and designed numerous adaptive reuse projects, classrooms, and office spaces for a multitude of clients from educational institutions and manufacturers to fortune 100 corporations.

Although the firm is small in size, the level of personal involvement and attention to detail is surpassed by no other medium or large sized firm. OTA has developed and continues its client relationships by providing efficient, functional, and cost effective design solutions to meet their needs.

The close and realistic working relationship we share with each of our clients enables us to achieve a dignified and complete project; a fresh approach incorporating insight, vision and clarity of design.