License Verification for California Architect: http://www.cab.ca.gov

License Verification for California Contractor:  http://www.cslb.ca.gov

SF Planning Department - Property Information Map:
http://ec2-50-17-237-182.compute-1.amazonaws.com/PIM/

Hiring a Contractor:
http://www.cslb.ca.gov/Resources/GuidesAndPamphlets/WYSKPamphlet.pdf 

Owner - Builder:
http://www.cslb.ca.gov/Resources/GuidesAndPamphlets/OwnerBuildersPamphlet.pdf 

How not to get Scammed:
http://www.cslb.ca.gov/Resources/GuidesAndPamphlets/AfterADisasterGuide.pdf