Summary: With increasing attractiveness of location-based services (LBS), the need for consistent establishment and deployment of the LBS Quality of Service (QoS) hierarchy is strongly demanded. The position estimation is in the heart of every location-based service. Thus, LBS QoS is primarily concerned with position estimation performance, including position estimation errors and response time, achieved by either single position sensor, or a combination of several position estimation sensors and methods. Common LBS QoS establishment approach consists of either “as-is” (i. e. no-guarantee) or “best-effort” (again no-guarantee, but with some concern) approach. The proposed new solution starts with generic description of LBS QoS and methods for its deployment. As the result a method emerges that utilises position estimation by adaptive selection of positioning sensors based on requested QoS.