If you can't determine accurately what is a deal point for your buyers then you are just wasting alot of peoples time. 

Last one to remember for an inexperienced auction property buyer is all the "fees" which many people don't accurately calculate or understand.Last thing I tell people is don't get carried away on auction prices and to make sure you understand the value of the property (including pre and post acquisition costs) against market value.  

You want to make sure the drawings are as accurate as possible and that you capture every inch of rentable space.

Of course, I want my assessments to be as accurate as possible.

Assume the location and everything else is ideal, just for example.. if Realtor.com's numbers are accurate then a 15yr loan (they include prop. tax, insurance, and HOA) would be $524 a month.

Has this estimate proven accurate in your experience?

You don't need to be well versed in each aspects (you don't have enough time in the day) but having a basic understanding of many will give you more options in your investing.Most importantly, enjoy what you looking at, do good, accurate research and find something you can love while putting in work.

Thx @Mark Brogan@Alpha DiawaraThe name of the game in residential real estate is cash or termsWholesale deal no, no equityList w agent deal, no, seller Will need to pay costs so including commissions closing costs so is concessions holding calls repair costs, say 10% of value, if accurate price is 390,000 that's 39,000Sub to, you can't buy any equity and rent equals PITI payment = no cash flowWrap around, noJoint venture with the seller, noContract for deed noLease option assignment only solution, get out of this no equity deal with no cash flow and minor repairs

On most REO's, the info in the MLS is not accurate on rental restrictions so one has to start researching all of the past sales and get a general consensus on what the restrictions are.

I agree that Zillow is not accurate.