Selling 25% of My 1031 Exchange

[Jackie P.]

One year ago, I exchanged a rental duplex and for 4 rental mobile homes. One of the homes has been vacant for much of that year due to poor property management that was recently fired. I would like to sell it as a rent to own handyman special. If I do that and title doesn't transfer for at least another year, does this meet the 2 year rule? If I sell it outright for cash, does it invalidate the entire 1031 exchange or do I just pay tax on the 25%?