Cap rates could have some value if there was a reliable third party source that analyzed all SFR sales and then reported the results.  

I've also heard (not sure how reliable this is) that in order to go from 2 to 3 or 3 to 4 units you need a parking space for each unit.

The most reliable way to do that is to compare the house in question to houses sold within a very short distance in recent time.  

Among the various benefits of online pay structures are; reliable record keeping, swift automation of payment processes, fewer in-house financial people to handle accounts and monies, lower overhead from reduced records, etc.

Ditto with @Michael D. that you will need some cash reserves, my place didn't get reliably profitable for about 6 months, but now hums along nicely with minimal intervention.  

How reliable are these Trend tabs? 

I am a good helper with projects but am not from a handyman family, and don't know any reliable contractors.

I spoke with my property manager and GC today, both who I feel are reliable and very knowledgable of my local market.

Hello, I'm Keashawn Hunter a new wholesaler in the Louisville, KY area and I need some referrals on reliable title companies to use any suggestions would be highly appreciated.

Any real estate software reliable for connecting deals with buyers?