Interior Building Systems specializes in fine architectural millwork in the Washington D.C, Maryland and Virginia area. We ha ... ve been in business for over 30 years, providing for and working with our clients to achieve top notch quality. Quality interior millwork--when it matters the most. For the end customer, quality means “wow”. For those involved in the process, quality means “dependability.” At ibs, quality means consistency, reliability, and innovation. To provide dependability to the commercial interiors industry, ibs has the highest certifications available, a purpose-built plant, refined processes, craftsmen with years of experience, a strong portfolio of interior millwork, and an even stronger reference list. IBS leverages the latest technologies to provide the highest level of quality commercial interior millwork. read more