. >> i'm louise dawson, the lead restaurant consultant for the san francisco small business development center. >> lead restaurant consultant for the small business development center. the free resource girl. [laughter]. >> yes , sir. >> [inaudible]. >> there are and charlie can speak to that. >> there are minimum code requirements. state building code. but then you need to pay attention to complaints. what we do in mixed use project system we specify that commercial tenants have to submit their plans for ventilation, plumbing equipment attached to the residential ceiling construction above. as part of the leasing provision to avoid problems because as i say, once you have the restaurant or other type of establishment below the residents they can care less about the residents. they are doing business and the people upstairs are annoyed by the noise vibration. so, the mixed use developer is interested in having it be a lease arrangement rather than something that's over looked. and they get stuck with this continuous problem. >> building code is strict in california 74, i think that cali