On their website it says that it will be: foundation and main floor made of concrete followed by wood and metal frame.
So, exactly what CBBarnett stated!
Got that from here BTW - https://www.irvine-inglewood.com/architecture
No problem at all! from the website - I feel as if they are really trying to capture the uniqueness of Inglewood as they focus heavily on the community and the lifestyle. I found this an interesting approach!
I love Inglewood and this is one of the places I am actually strongly considering moving to.
They posted a new website for those who are interested: www.irvine-inglewood.com