I've gathered more knowledge than I can implement with all the BP content and other materials, lol.

My question is, do I just use the heavily reduced price I was able to purchase it for since it was vacant, and then the material cost of what I renovated plus what things I did contract out, even though that basis would be way under what the other renovated houses that sold near me per SF sold at, or are you able to use similar comps to determine the depreciation basis?

I'm debating sponsoring other areas to hang my material up.What ways do you like to promote your business?

You can cover the wire mesh with drywall patches (they tape on wall and across the wire, white/paintable, different sizes) as the wire mesh is what will prevent the rats from eating their way into the property (the covering material is cosmetic only).

I'll look into that material more!

You may be able to lean on the title company if they missed something, but generally if the deal closed and its not an issue of material disclosure or title or something its generally your issue now, the owner doesn't really have an obligation to comply if they closed according to the CD you signed.  

Estimated CostsADU costs can range DRAMATICALLY depending on the state of the lot, custom vs fast track plans, size of ADU, materials and finishes, speed and quality of the builder, etc.

Good call, Noel—licensing and insurance are critical, but in Tennessee, a contractor’s license is generally required for projects totaling $25,000 or more, including labor and materials (See Tennessee's licensing requirements).

I came up with $385,000 to build for material/labor.

The sale and acquisition closing benefits are real and material.