CCS Inc has been operating since 1984 — 40+ years — and their specialty is building code compliance alongside ADU construction. That’s a unique angle no other listing on your directory has. They resolve LADBS violations, legalize unpermitted work, handle retroactive as-built permits, and build ADUs and garage conversions. 129 five-star reviews on Yelp. U.S. Green Building Council member, OSHA certified, HPP Cares preferred vendor. Based in Encino, serving all of Los Angeles.