Build time for a custom home in Las Vegas typically ranges from 9 to 18 months depending on size, finish level, and permitting. Kingdom & Co. completed Ruby Estate, a 3,956 sf mountain modern custom home, in nine months from groundbreaking to final walkthrough. Every project timeline is specific to that build, with permitting cycles, lot conditions, square footage, finish complexity, and material lead times all shaping the final schedule. Quoted ranges are useful starting points, not delivery guarantees.