Designing Custom Upholstered Furniture for Commercial and Residential Clients Since 1993. Located in Portland, Oregon, Trio Furniture & Design, Inc. has dedicated over 20 years to creating custom furniture for commercial and residential clients. Our custom furniture is bench made one piece at a time. The kiln-dried alder frames stand the test of time and durability. We believe building custom furniture is the process of bringing your idea to life. Your custom furniture should be built to meet your specifications and comfort. Trio Furniture & Design, Inc. will make your dream piece a reality.