Depending on what price point you are talking about just bringing the sustainability rebate/grant/credits etc experience might not make sense for the developer (they would generally contract with a consultant to handle this).  

"It is possible that bond markets will become worried about the sustainability [of yearly deficits over $1 trillion], and we may find ourselves facing higher interest rates even today."

We are expecting light rail also, between Durham, Chaoel Hill, and Raleigh.I think the reason people are moving here is, because while the costs of living are climbing, they are still lower in relation to other larger cities, but offer a more sustainable career path by transitioning here during this window of time to establish yourself before the economic boom in this area slows down.

Truth be told I know i cannot archive all of that through working for someone, I want to generate enough money to sustain a business and leave enough behind for my child too.

Any city that has a large population and will sustain continued growth is fine.

Is that rental income really sustainable and defendable? 

This is a healthy and sustainable growth rate.

They also needed a simple business plan showing how and when the business would have sustainable revenue to be able to pay the rent.

Besides the moral implications, as a pragmatic matter creating and exploiting this sort of inefficiency in my observation over the years is neither scaleable nor long term sustainable.

Your numbers should be taken with a grain of salt until you've personally inspected each and every unit in the purchase thoroughly.3. 1-bedrooms usually have much higher turnover than any other bedroom count, so make sure your area has enough population growth to sustain that demand for many years to come.4.