I always recommend checking out builders, and contractors, making sure they are licensed and insured

Better business bureau
A+ rating and member since 2008
BBB.org

California Stae Contractors Board
FLJ INC
Established in 2006
Lic# 875218
cslb.ca.gov

I would also like to offer the many references that I have which are available upon request. Many generous clients have offered to let me show their homes inside and out to prospective individuals.