We do some in house drawings depending on the job at hand.

That was a couple of years ago and depending on the amount they may utilize tax assessment instead of appraisal.

Depending on your relation with the bank, they may lend you 50-70% of the loan balance.

You may or may not pay some tax depending on what you adjusted cost basis is. 

And remember, your "all in" price will ultimately be higher than 120k depending on how much work is needed.I would recommend talking to one or more mortgage brokers, or loan officers at banks you already have relationships with, as you may not have to do a 20% down conventional mortgage but may be able to do FHA or Conventional 97.

Just depends on access with a concrete truck.

The Outside protection however varies greatly depending where the LLC is formed.

Depending on how you add up your ROI (what are you counting in that for expenses and income), I don't think getting 20% with turnkey is realistic.  

If you're depending on realtors or wholesalers you will most likely struggle. 

A SFR property could involve more rehab than a multifamily depending on the size and current condition.