According to the August 29 City of Burnaby council meeting minutes, it appears that the Brentwood Mall development will include the construction of street-level commercial space fronting Lougheed Hwy between Beta Ave and Brentwood Station. The appearance of commercial storefronts will dramatically transform the look of Lougheed Hwy.
As for what will occupy the area above the commercial/retail front, details are have not yet been mentioned. It will most likely be commercial office space which will either take the form of low or high-rises. It will be interesting to see how the Lougheed-facing commercial spaces will be connected for access to and from the rest of the inner property where other phases of the project will take place.
As for one of the items on my wish list for the mall project; since Tim Horton's has seen it's parking spaces encroached upon by the increasing numbers of Steve Nash Fitness World patrons, hopefully it will relocate to one of the newly developed spaces at Brentwood Mall.