STG Design | 13,491 followers on LinkedIn. Architecture, Interior Design and Planning in Austin, Houston, Nashville, and Phoenix. | STG Design is an employee-owned firm with an integrated approach to architecture, interior design and planning. By working collaboratively with our clients, bringing a balance of design, technical knowledge and service, STG Design’s fervent customer focus results in designs that reflect our clients’ goals. Nearly 100 extraordinarily talented staff are networked across the Texas, Tennessee, and Arizona offices, working jointly to offer a myriad of services under one roof.