(Yes, they're all technically different, but they function the same as far as a buyer's ability close quickly and relatively hassle-free.

As far as payback goes, that really is a function of the utility rates and how often the tenants are using (abusing) the hvac. 

However, functionally those high taxes are passed on to renters -- rent as a % of property value is relatively high, even though absolute rents are not expensive.All property taxes in our area include 4 categories: county/town, city/village (only if property is in an incorporated area), school, and sewer.  

We found that full accounting programs with PM add-ons (Yardi, QuickBooks) still didn't have full PM functionality.

I'm on mobile so I can't use the at function.

I ended up leaving it a duplex just because it is easier in many ways, and functions well as a duplex.Remember with a duplex you will have basically 2 rehabs.  2 kitchens, 2 electric panels, 2 of most everything.  

I have another function that Wednesday  I need to attend.

lolUsed to have the one panel kind and then it moved to the rotating flip signs and now LED.

I have walked through to make sure there are no leaks, and that the lights function.

Don't count on the seller to do your figuring, that'll make you very poor, very quickly.)The suggestions to insist upon the schedule E or the tax returns are interesting- most investors can figure out what a building needs(in terms of capex and operating expenses) and what the rents and vacancy rate should be(as those are functions of area, the economy, curb appeal, management skill, and so on,) so if I were selling a 10 unit and a buyer insisted upon my seeing any part of my tax return, I'd consider that buyer to be an irritant and I'd find one who was capable of doing their own proper due diligence.