I need an Architectural drawing for a flat roof extension. The width of the roof is 26' and i'm extending it 24'. I need the right beam, post and joist sizing. I also need the right footings. The soil for the footings is Arizona desert sand and clay.

I am looking for an experienced architectural designer to help create a 26' wide flat roof extension for my property that will add additional outdoor covered patio space. The extension will be 24' total and I will need the right beam, post, joist sizing and footings for the project. The soil for the footings will be from the Arizona desert sand and clay. I have specific design requirements for the flat roof extension, which should be stucco and traditional Arizona style. My budget is less than $500, and I need an architectural drawing complete with all of the necessary components. Thank you for your consideration.