I looked at the article and there are quite a few different options to be able to reference for the comparable pricing.

Also to add to what others mentioned about getting pre-qualified, etc, it also comes down to building your team prior to finding an investment.

Houston Real Estate Highlights in August(* asterisk denotes that the “Harvey effect” has been removed): Single-family home sales rose 7.6 percent year-over-year, with 5,844 units sold*;Days on Market (DOM) for single-family homes declined slightly to 49 days;Total property sales jumped 36.8 percent, with 9,978 units sold;Total dollar volume increased 40.1 percent to $2.86 billion;The single-family home median price rose 3.0 percent to $236,870, reaching an August high;The single-family home average price also achieved an August record, rising 1.9 percent to $300,670;Single-family homes months of inventory was at a 4.1-months supply, down from 4.3 months last August and equal to the national level;Townhome/condominium sales rose 12.3 percent year-over-year, with 457 units sold in 2018 compared to 407 one year earlier*;Leases of single-family homes rose 7.6 percent with the average rent up 3.4 percent to $1,926*;Volume of townhome/condominium leases fell 8.6 percent with the average rent up 5.5 percent to $1,639*HAR https://www.har.com/content/newsroom?

You might want to get your entity structure established prior to jumping the gun.  

In this analysis, income stability takes precedence over job stability. 4155.1 4.D.1.d Borrowers Returning to Work After Extended Absences A borrower’s income may be considered effective and stable when recently returning to work after an extended absence if he/she is employed in the current job for six months or longer, and can document a two year work history prior to an absence from employment using traditional employment verification, and/or copies of W-2 forms or pay stubs. 

ANYthing you need, get before closing, or you risk not being able to get it at all.Get a history of the rental payments from the prior owner.If there is no lease, write one up and make sure it is signed prior to closing, or else the tenants may opt to not sign it.Cant change the rent or utilities mid-lease (If there is one)

Leave the pool as is and sell the property with three options: 1. you will fill in pool before closing, 2. you will leave pool as is, 3. you will rehab pool prior to closing.

For those participating in Arizona trustee auctions here is an interesting article:https://www.asreb.com/2018/04/laying-law-supreme-court-rules-claims-wrongful-foreclosure-must-filed-prior-trustee-sale/

The best you can do is to evaluate it yourself based on the 3 factors and appraiser should use.1) Income approach - project rents and NOI and use a cap rate you feel appropriate to the market.2) Comparables - look for anything similar sold in that area or surrounding areas.3) Replacement - if you're essentially rebuilding it look at the cost of new construction.

The structure is intact and was put out prior to the place burning down.