AbstractA statistical impact evaluation was conducted on nine retail landscape transformation (LT) programs across North America that include turf removal and replacement, “cash for grass,” xeriscape and water‐wise relandscaping, and utility‐sponsored efforts to promote and incentivize reductions in the landscape water requirement. This empirical evaluation focused on the observable changes in customer water consumption. Methodological challenges include unavoidable self‐selection in voluntary conservation programs, programmatic differences, weather variation, and customer heterogeneity. Alternative methodological approaches are discussed, and a continuous time statistical intervention model is set forth. This was implemented using high‐resolution individual customer panel data methods to arrive at an expected annual change, changes to the shape of water demand within the year (demand shaping), and—for one LT program—the long‐term persistence of water savings. Detectable water savings were observed for all examined programs.