Certainly I call all the time, there were months where emergency vehicles were out every weekend. However they never seem to have more than a momentary effect. They 5150 someone, 2 days later they are back.

might try calling sf building inspector or the noise abatement folks. find out who owns the building

You can call or text anonymously any information pertaining to crimes you witnessed. To find out the number best suited for your location, follow this link to the official SFPD website:
http://www.sf-police.org/index.aspx?page=41