If done correctly you'll be able to recoup your initial investment and then some (assuming it increases by a substantial amount) as a result you'd be able to achieve an infinite return.

If you take your entire portfolio and stick it in a savings account earning 1% interest, and then go sit on a beach for a year, your $/hour earnings off that portfolio is infinite, as you'll be working zero hours but still generate income.So, if you're just looking to maximize $/hour, you need to stop working.Likewise, the other edge case is to work 168/hours per week to force huge ROI gains on your portfolio, but at the same time sacrificing your $/hour metric (and your health).

We have found the best thing to do is to buy new off the shelf, the whole package.

Start by creating a spreadsheet that goes through each room, and lists all of those items you want to fix/replace based either on the need, or the shelf life (carpets every 4 years, etc). 

If you have several SFHs in the same area and one property manager that tends to all of them, that seems infinitely better than having a different PM for each property if they were dispersed.It sounds like you have a great PM company.

Hi John, my formulas said that I have an infinite amount of income  potential  so I'm not sure what I did wrong. 

You don’t have to accept the off the shelf contract as it is biased in favor of those who drafted it—which if you think about it for a second is perfectly natural—but it’s more than fair for them to ask you for a written agreement.

I get better volume pricing and I absolutely refuse to pay markup when I could go off the shelf at Home Depot for a better price.

The returns aren't as high but are infinitely scalable.

So basically this house has given me an infinite rate of return.