Adaptive re-use...in the Valley?  Apparently so.  According to an environmental notice published by LADCP last week, the mid-century office building at the southwest corner of Riverside Drive and Lankershim Boulevard is going condo.  Plans from the Sterling Real Estate Group call for converting the seven-story structure into 56 residential units and just over 11,000 square feet of ground floor retail space.  The condo development would provide parking for 163 vehicles in an existing surface lot.  Plans drawn up by Killefer Flammang Architects in 2007 dubbed the project "Riverside Village." Those designs featured windows shaded by solar panels, a 7th floor mezzanine, and an 8th floor penthouse.  However, last week's environmental notice indicates that some of those elements may no longer be part of the project.  Located at 10850 Riverside Drive, the project is situated midway between two Metro Red Line Stations and adjacent to the 134 freeway.  Perhaps walkable North Hollywood is starting to extend its footprint south.