Key legal question
Whether the social-democratic party's complaint against the operating permit for C. GmbH and D. AG was timely
Extracted holding
The complaint was timely for the two tenants because their concrete use was first definitively fixed only by the operating permit of 28 June 2007.
Extracted reasoning
Earlier building approvals did not finally authorize the concrete use of the premises; notice was not public, and the party acted promptly after learning of the permit.