I already have a built-out ground floor on a 30 × 60 ft plot together with the original CAD drawing. I now need to convert the structure into a full duplex, refresh the floor-plan where required, and present a striking modern elevation that shows off large windows, balconies, and a clean flat roofline. Here’s what I’d like from you: • Revise the existing plan so the staircase, room layout, and service shafts work smoothly for a two-storey arrangement without disturbing the constructed ground floor. • Produce clear 2D CAD elevations (front, side and rear) that match the updated plan and respect the modern style brief. • Generate photorealistic 3D views or a walk-through model so I can see materials, lighting, and proportions before execution. I have a specific concept in mind and will share sketches plus the current DWG once we start. Native CAD files (DWG) along with PDF prints and high-resolution renders will be the final hand-off. One round of refinement after I review the first draft is essential to make sure every balcony line, window module and roof edge feels right. If you are fluent in AutoCAD plus SketchUp, Revit, 3ds Max or similar, and can turn this around quickly, let’s get started—I’m ready to build as soon as the drawings are approved.