Small scale evaluations are discussed and a case is presented where the impact of a neighbourhood senior citizens' health promotion centre on its clients and community cannot be assessed through large scale, rigorous, evaluation approaches. In addition to the inherent difficulties of finding measurable substitutes for health, the small scale of the program was unlikely to produce a measurable impact on them and the high cost entailed relative to the resources invested in the program was unwarranted. Emphasizing the quantity and quality of services provided, the evaluation found that the centre, which was planned, organized and controlled by a community association, provided a wide range of quality, accessible disease prevention and health promotion services to seniors in a neighbourhood setting. Two high risk groups were emphasized, the frail elderly and Native Indian elderly.