One us a number that you can develop with 100% certainty.  

Mineral rights are valuable, especially in an area of mineral development (like oil).

Any size, any price range.What's the best way to locate the developers or find these building?

If so what techniques seemed to work best for you?

Jersey City and Union City, I would argue, are in different stages of real estate development.

I was approached by the Housing and Re-development Authority in my home town where I had bought the house 5 years ago for $25,000.

I was born and raised in the City and learned about investing techniques when I was in my 20's, now 73 still going strong and doing bigger and more profitable transactions.

@Tanner GishWith respect to UBIT, that is a tax that applies when a tax-exempt entity engages in a trade or business on a regular or repeated basis.Flipping houses or new home development are business transactions.  

Wanting to acquire wealth and develop certain parts of my community at the same time.  

I do mostly new development around Denver downtown with a couple local builders, so we are constantly looking for older homes to tear down and rebuild with something new.