Or we've also been exploring moving to a district with a better high school for the kids in a few years and turning the current place into a rental.

The percentages are going to be up to you There are all kinds of High interest account that require all kinds of hoops to keep them.

What if you have an apartment complex with 20 units?

It's also easier to handle dips in census similarly to dealing with rental vacancy if you have one rental property compared to a larger apartment building.My wife loves the operations but we have steadily been working her out of the day-to-day stuff. 

You want lower land cost with high rental demand unless you're a reno expert and flipper which not 1% of real investors are. 

I highly recommend consulting with a CPA or tax professional to ensure you're using the best strategy for your situation.Good luck!

The operator may trade off the longer term benefits to keep a high quality tenant in place.

It's probably going to mean paying points at closing, a high rate, and a serious pre-payment penalty (like 5 years). 

These buyers are playing the long game—betting on rising property values and rents, which offsets initial breakeven or negative cash flow.If you’re starting out, I strongly recommend focusing on single-family homes in neighborhoods at the high end of the "low-end market" spectrum.

High taxes.