This paper addresses the issue of state sharing in CSP$\|$B specifications: B machines controlled by various CSP parts are supposed not to refer to, share or modify the same state space. However, some kinds of B state sharing can be allowed without creating inconsistencies in CSP$\|$B specifications. To achieve this, we present a B-based solution for allowing architectures with B state sharing in the CSP$\|$B components. We show that the inconsistencies in state sharing can be identified by translating the CSP controllers into B specifications and then using a more refined consistency checking process. We also hint at possible extensions towards other CSP$\|$B architectural patterns with various types of sub-components sharing.