r.o.i. Design is a commercial interior design firm that collaborates with clients to provide a return on investment through their design work. They serve a variety of markets including hospitality, residential, workplace, retail, food service, and religious organizations. Their interior design services include planning and research, space programming, conceptual design, budgets, product selection, drafting plans, and documentation. r.o.i. Design operates as a fee-based company, providing clients with itemized proposals and sending invoices every two weeks for design work.