We're flying blind in some ways, and really know very few people who are hungry to retire early and are as fascinated with real estate as we are.

I know several people who may or may not invest in future deals, depending on where their cash is, and my deal(s) are ... and where they line up on a calendar.There isn't a perfect science to it.  

I've always been fascinated with Tiny Homes, the efficiency of space and minimalistic concept is amazing.

With 15 years in the business I have my process down to a science.

I grew up in Vancouver, Canada and moved to Waterloo, Ontario to study computer science.

Your scenario fascinates me as I have friends in the area.

This is a fascinating topic.

Maybe get rid of the 10% buffer if you already have a lot of science behind the estimate.Maintenance - As others have said, the maintenance number is too low (especially for 100% turnover) but your combined maintenance and cap ex do not appear too low.Appreciation and Principal Reduction - Cash flow is one of three profit drivers in real estate and to calculate the true return, factor in the other two drivers using the IRR.At a 60% expense rate for a $1450 rental, you are likely forecasting expenses a little on the high side (even with the higher taxes) but you may not be too far off (and the tweaks I mentioned may help).

It's not rocket science. 

It’s time consuming, but not rocket science - all basics arithmetic we learned in grade school.