Advanced Business Solutions 5500 Hollywood Blvd, Los Angeles, CA90028 Advanced Business Solutions is conveniently located on Hollywood Boulevard in the historic Louis B. Mayer building. ABS…More has services for both residential and commercial real estate. It is currently working on more than 450 units across Southern California, with a market value of more than $250 million. ABS specializes in affordable-housing developments. It has several offices on the fourth floor.