Interior designer pricing varies widely by firm, project scope, and market. Hourly rates in the Las Vegas valley typically range from $100 to $250 per hour. Flat-fee projects (whole-room design) commonly run $3,000 to $15,000. Full design-build engagements on luxury custom homes and major remodels are typically priced as a percentage of construction value (commonly 8 to 15 percent) or as a flat fee scaled to the project size. Kingdom & Co. develops project-specific pricing during the discovery phase based on
the scope, materials, and timeline. Bottom line: budget for design fees as part of the project cost, not as an afterthought.