20x20 G+1 Office Design

I’m planning a compact 20 ft × 20 ft ground-plus-one structure that will operate solely as office space on both floors. To move forward with permitting and construction, I need complete floor plans paired with the corresponding structural drawings. My priority is a space-efficient, code-compliant design that clearly shows column positions, beam sizes, slab details, and load paths while leaving enough flexibility for future electrical and plumbing routing. Deliverables (all in PDF + editable CAD): • Ground-floor and first-floor plans with room dimensions, wall types, door/window scheduling, and a single internal staircase layout. • Foundation, column, beam, and slab reinforcement drawings sized for a 20 × 20 ft footprint and two-storey load. • General notes or schedules that specify materials, design loads, and any assumptions made. Feel free to use AutoCAD, Revit, STAAD, ETABS, or your usual structural toolset—as long as final files are clear and ready for a local engineer to stamp. Let me know your approach, estimated timeframe, and any information you still need from my side so we can get started right away.