Also when I am trying to get quotes online, it only allows me to put the address in for one side, how do I accurately get a quote for the whole building?  

I understand this of course but I am wanting to learn the subtle ins and outs like what are the first things to look at on a property, how do you accurately calculate your costs (fixed, rehab etc) before someone else grabs the house and before you have the experience?

Propstream's information is more accurate and updated.

we get these weekly from our title companies   this is very accurate data and in real time. https://altos.re/r/f97cf59   I have a 90 home community starting in this city in 2 weeks  IE break ground for the streets and roads etc.so we like to keep a close eye on it.. then I know also what my competition is doing  IE Lennar and another larger regional builder.. 

Note back to #3, always have exit strategies to handle a variety of situations as they arise.I always like to keep the mindset that the money is made when you buy the property so always track your numbers closely to ensure it pens out when you buy, not a few years down the road based on a gamble.

I would refrain on saying  “to gamble” or something like that.

This is why your post above created several points of information that don't read as accurate.

Hey @Andrew Bailey - I agree with Account Closed said is accurate in regards to rent - if it's in Arbor Hill then good luck and double your expenses because those properties definitely need work.

When determining an accurate ARV do lenders appraise based off the 50% rule or the actual expenses paid in the prior year, IE: tax returns?

When practicing, don't worry so much about becoming accurate with the numbers, be more concerned with learning the process and calculations.