Bringing enclosed back porch up to code

[Devon Schmieder]

Hey BP,

I recently bought a 2bd 1bth property in Tucson, AZ last November with a Homeready loan. I'm currently living in the property ( Similar to an FHA - owner occupied for 1 year minimum). I have a few exit strategies for the property but ideally I'd like to convert an un-permitted enclosed back porch (~300 sqft) into an additional studio unit. The property is R2 zoned, and I don't think I will run into any setback issues; the lot is fairly large and the house sits center on the property. It already has AC-heating ventilation, electrical outlets and a closet. Here's the problem, there is no footing underneath the existing concrete slap of the enclosed porch. This will probably be required to it permitted. If this is the direction I decide to run with, I will do a lot of the work myself with the help of my Dad ( licensed contractor in Flagstaff AZ, which is about 4 hours north of Tucson). I plan to have an inspector come out and access what will be required to bring the existing structure up to code. I guess my question is - Is there anyone that has dealt with something similar or dumb enough to tackle such a task?

Thanks,

Devon