Los Angeles has 9 buildings above 500 feet under construction.
Wilshire Grand
Oceanwide tower 1
Oceanwide tower 2
Oceanwide tower 3
Metropolis tower 4
820 Olive
1212 Flower tower 1
Century Plaza tower 1
Century Plaza tower 2
While we don't have exact heights on Century Plaza, they're twin 46 story towers that broke ground not too long ago. They'll be taller than the SunAmerica tower which is 535 feet and The Century which is 481 feet.
http://urbanize.la/post/construction...-redevelopment