Two-Floor Extension & Re-Plan

I own a mixed-use building that now holds four street-level shops (6 m clear height) and one residential floor. The plot is 950 m² with 570 m² already built. I’m ready to transform it into a purely residential,... (Budget: $30 - $250 USD, Jobs: Architectural Engineering, AutoCAD, Building Architecture, Building Design, CAD/CAM, Civil Engineering, Revit, Structural Engineering)