I need a complete architectural proposal for a mixed-use commercial complex on a 50 ft × 70 ft plot. The brief starts with a first-phase build: basement parking covering the full footprint and a ground-to-third-floor superstructure. Subsequent second and third phases should be anticipated in the concept so that the construction can be extended seamlessly without demolishing or weakening the initial frame. Key considerations • Efficient ramp and circulation for basement parking sized for standard sedans and small delivery vans. • Flexible ground-floor layout that can accommodate retail now and convert to other uses later. • Two upper levels earmarked for offices or co-working; service cores (stairs, ducts, washrooms, elevator shaft) must align vertically for economical expansion. • Local building codes on fire egress, accessible entry and minimum light/vent ratios must be observed from the outset. Please deliver: 1. Concept sketches showing massing and future expansion zones. 2. Scaled floor plans, sections and elevations (AutoCAD or Revit preferred). 3. 3D views sufficient for client presentations. 4. A short structural narrative identifying column grid, slab system and how extra floors can be added. 5. Parking layout schedule demonstrating capacity and turning radii compliance. I will be available to answer zoning or by-law questions quickly so you can focus on design.