Hillsborough county opportunity zones, here is a helpful article. https://eig.org/news/what-to-know-u-s-treasury-announces-proposed-guidance-on-opportunity-zones

They've discussed possible setting up an LLC, C-Corp, or S-Corp.I am younger and have two personal investment properties already as well as a full-time, well-paying job.

Estimating costs for new phone floor/elevation, accounting for unknown costs/mistakes

Estimating all costs for new floor plan and elevation is not easy.

Mesa is not that far from Tempe, but if you can raise your purchase price in Tempe many rentals by the room within a few miles of the college receive high monthly rents $100.00's above the market monthly rent. 

I don't want to give the buyer(s) the address to the house until they sign this contract.

Investment Info:

Single-family residence fix & flip investment.

Purchase price: $17,500

Cash invested: $17,500

Foreclosed home with about 1,100 sq ft and originally 3 Bed 1 Bath. I plan on openin...

Every 6 months or so, move into another unit, fix it up, and raise the rents in the unit(s) you've already improved. 

Consider getting an S-corp, it will eventually save you taxes.

@Linda FordThe decision to make a C or an S election is a calculus that you should definitely engage a tax CPA/EA for.There are qualitative and long-term quantitative factors as well.