My parents loaned me money twice and it worked out fine.

If we were to sell, we're looking 1.2-1.5mil.Our situation is we want to purchase another property for my parents to live in - it would be 600-700k condo.

There's software that can tell even which blocks has the highest appreciation per zip code. this is for rehab or buy-and-hold long term.The inside factor that really makes higher appreciation is good school districts as parents wouldn't need to pay private schools for their kids. 

@Andrew Stouse, continue living with your parents while saving for closing costs/reserves.

Once everyone is clear on the big picture of what the estate plan is and what your parents want, other issues dealing with specific properties and specific issues such as 1031s, shifting to other investments, financing issues, etc. will become clearer.

As far as utilities go many years ago my parents owned a 12 unit apartment complex that had all shared utilities.

You do this by becoming an authorized user on your parents credit card.

In Houston, Tx we get traveling nurses, divorced parents wanting to be close to kids, students, traveling professionals, and just people looking for a way to budget their life.

Currently, I'm still living with my parents.

My parents have a condo at Brooklyn which is occupied by a holdover tenant for a few months now.