The blog makes a few assumptions, but it's a pretty solid comparison. 

The assumption of continuing electricity for two months is that the homeowner's account was never canceled and automatic payment was setup.Is the tenant, by law, required to pay for the electric bill from the two months? 

You'd want to get a home inspector out there and then follow that with contractors and get actual quotes (and then add some in addition to that for the assumption that rehabs tend to cost more than planned to some degree).

@James Phillips - Is your house cash flowing with some assumptions such as maintenance costs, vacancy, cap ex, property management? 

Don't make the assumption that your contractor is just trying to make a quick buck by recommending replacement.

It's good Friday and I was hoping to get thoughts over the weekendUsing 7% vacancy rate and no assumptions on the garage I came up with on the calculator:CAP rate 16%Cash on Cash ROI   51%NOI $11,072I did not calculate CAPEX into the calculator properly???

I do wonder whether a triplex is the best way to capitalize on price appreciation, though, as I would be limited to selling to other investors and not owner occupants.Are my repair and CapEx assumptions too high? 

You failed to mention your age or any financial conditions in your letter so I will have to make certain assumptions and treat you like the average investor.You do have to train yourself about hearing the word "no" and turn in more offers that make you more competitive.

B area, I'd submit that's not a great assumption to make.

But they have a slider on their pro-forma so you can adjust your assumptions.