It builds your muscle for spotting value.To analyze 3107 Walton Ave: start by pulling accurate rent comps using Rentometer, RentCast, or even Craigslist/Zillow manually, filter for same bed/bath, size, and within 1 mile.

No [Should be Yes (I think--Unit 1 has mini-splits; Unit 2 has central air)] # of Fireplaces.        0 Garage Size/Type   None [It has a detached garage.]

And compared to income tax..Depending on the size of portfolio and appreciation you can also pull pull equity by keeping your leverage at a fixed percentage and skimming off the annual appreciation.Third option would be to 1031 into a syndicated deal (or multiple) maybe some inductrial, commerical to diversity.

Who decides the size of it, and how?

Also yes you can put 2nd lien supplemental debt on the property - they size to a combined 80% LTV; 1.25x DCR; 30-year amortization in most cases.

Trucking in water, or having it delivered, is no fun at all.So check with the City/County and ask neighbors, they will all be happy to tell you about the size of the aquafer and the various flow rates. 

what's the size of the roof? 

Have you done a deal this size before? 

You'd be surprised at the occupancy rates of some of these mid-sized cities.

Yep, we're still doing 100/100 routinely (with loan size up to 75% ARV) on our normal program across 10 states.