ADU Garage Conversion Calculations

I’m converting an existing garage into a code-compliant accessory dwelling unit and now need a full set of engineering calculations to submit with the permit package. The architectural layout is essentially... (Budget: ₹12500 - ₹37500 INR, Jobs: Architectural Engineering, AutoCAD, Building Design, CAD/CAM, Electrical Engineering, Engineering, Mechanical Engineering, Structural Engineering)