Even if you have all your tax-advantaged accounts in Index Funds (a-la Warren Buffet) you're probably going to get around 7% over the course of those 20-30 years, which is a pretty solid return for having zero time invested, and extremely low risk relative to other investments.

It would be extremely rare that any property would not be on the tax rolls. 

First thing, unless we get extremely lucky, we will not sell all four houses at the same time, definitely not within the time frame the IRS requires.

Quick and easy renovations can be enough to bump up your home's value without too many construction or design costs cutting into your profit margin.You should also keep in mind that a hot seller's market means less financial risk for house flippers given the lower likelihood of being unable to resell the home.ForeclosuresWith the ability to buy low and potentially make a big profit upon reselling, foreclosures are the types of homes that are enticing to many real estate flippers.Since the Austin real estate market is extremely hot, finding a foreclosed home to flip may be tough, but it can be done.

It's tiny (home built between 1910-1950.

Kristie Eddy - I'm a Rentec user too and extremely rarely do tenants have any problem giving bank info to get ACH setup. 

Thanks again for all the helpful suggestions everybody, extremely helpful!

It could be because houses in that area are extremely expensive, credit problems, wanting more flexibility, an aversion to debt or home ownership or just who knows.

I'm extremely proud of the revitalization it has experienced over the years.

I'd appreciate any other suggestions given the extreme time constraints.