The study applies 3D range technology to improve efficiency in interior design and construction with better accuracy and quality. The feasibility of as-built range data was used for visual inspection and drawing production. The technology improved measurement accuracy, retrieved unreachable coordinates, controlled working schedule, compared construction with design, and facilitated follow-up interior maintenance and management over Internet. This study also showed that only accurate design specifications can meet design requirements and prevent construction error. Accurate as-built data solve design problems and control construction quality without increasing budget.