It really depends on the area and type of property, as in many neighborhoods people would prefer a bigger yard over a pool that they have to pay maintenance for. 

Depending on your strategy whether swift and fast turn around, or collecting doors over time, Numbers and Comps.

The purchase price for either building will depend largely on the NOI.Rents go up and rents go down.

And/or are you willing to go through a potentially more rigorous underwrite to get better terms (possibility, depending on what you've got on your end). 

CA flipping can be very different than TX depending on where you were doing it... ie.

As for your out-of-pocket costs, it really depends on the property and your specific situation, but budgeting around 5-10% of the purchase price for these extras is a good starting point.

Depends on where you are. 

You can buy a new one brand name for around 300-700 dollars, depending on brand, and get it installed for $200, or do it yourself with some basic skills and youtube video.

It all depends upon how long you can wait.  

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+, zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680, some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.