Building Automation Systems take care about many different kinds of automation tasks within today's buildings. The provided services are usually distributed across the related buildings, are developed by various vendors, use different communication standards, have disjunct semantic representation of data and so on. In larger, flexible and growing BAS it's obviously hard to manage all services without further support. A lack of proper service management leads at least to inefficient systems, errors in the building automation and thus to avoidable costs. Therefore we propose an architecture for the technical management of building automation systems supporting the dependable operation of BAS.