Modern Double-Storey Home Concept Design

I am commissioning a full concept package for a modern double-storey residence of roughly 240–280 sqm. The brief below captures the spaces, proportions, and lifestyle priorities that must guide the design... (Budget: $250 - $750 USD, Jobs: 2D Drafting, 3D Rendering, Architecture, AutoCAD, Building Architecture, Building Design, Building Information Modeling, Home Design, Interior Design, Landscape Design)