They are violating The City of Oakland Muni-Code 5.06.020 Regulations governing the posting of signs. Section A. 2. a. Section D. It would pay for it self by having a city employee canvas the city one day and record the illegal signs and send these folks a few citations.

City of Oakland Public Works Department addressed this issue on 06/01/2015, service request # 570836.

Thanks for fixing this issue!