This roofing company called me to inform me that the roof design that I wanted them to do is not suitable with the structure of the house. They want to set up a meeting with me so they can further explain and propose a better option. Here is their information.

San Francisco Roofing    
1450 Sutter Street,
San Francisco, CA 94109    
Phone (415) 868-5932    
http://www.sanfranciscocaroofing.com