Los Angeles Remodeling Contractor for 2-story addition needed

[Nick Campion]

Hi BP Community, 

I'm looking to add both space and value without developing into the yard.

Can anyone provide a referral or recommend a professional remodeling contractor whom specializes in the construction and engineering of design/build homes? Specifically, I am looking for a firm with extensive experience in 2nd story home additions. They'll need to inspect and analyze all aspects structurally from the foundation, interior & exterior walls, etc. to first see if it is even feasible. From there I'd be looking to discuss possible designs and receive an estimate. 

For clarification the home is located on the Westside in Los Angeles, 1156 Sq Ft, and is on pier and beam (raised) foundation. All comments and guidance are appreciated!

Thanks!