Accurately estimating rehab is definitely tough starting out, but deciding what materials and finishes to price also a challenge starting out.

@Araz MatevosyanWelcome to BP.There are tons o materials to accelerate your learning process, but just dont quit your 9-5 yet....

Buying links is actually disinsensitive and your index is demoted for attempting it.Indexing is about content, not prettiness of graphics, so write informative material that ONLY relates to the subject, use the TITLE and H1 tag to state the subject, and google will treat you fairly.

Is there large cracks in the foundation block/material?

It's been a hard slog renovating.I bought most of the materials off craigslist and offerup or materials on clearance sale at the big name stores.Brand new bathtubs- freeFound them in another building I ownBrand new modern vanities- $65Marked down from $400 at Home DepotKitchens with granite bench tops- $1000 eachPurchased from CraigslistShower screens, toilets, faucets, front doors, new windows and various other bits and pieces were bought for $20-$40 on Craigslist and offerup.The total rehab cost for installing central AC, 2 new bathrooms and 2 new kitchens, washer and dryer and updating plumbing and electrical is around 18K for materials and labor.Each side is rented for $1400 per month, total $2800.

If you really want to get all the water out, there should be a valve on the side of the tank near the bottom, either plastic or metal, with garden hose threads on it. 

The materials used and construction techniques then certainly have advantages over stud and drywall construction today, especially when you go and renovate.

That's 64 more square feet of framing, insulation, drywall, siding, paint, etc.Also, dimensional lumber is produced in two-foot lengths and panel goods are four-foot wide... most efficient use of materials will use wall and floor dimensions that are equally divisible in these increments.The boxes ain't always pretty, but they are more cost effective!

Bought a duplex, living in one half, renting out the other (potential for a third apartment above the garage) and I'm looking at doing some updates to the first apartment while I'm living there while also making plans...

These pro forma rents never ended up materializing.