1031 Exchange --> Moving In?

[David Miles]

I've been watching the forums for a long time, but haven't posted before. I couldn't find the answer to this question, so I'm sorry if it's been asked before.

I am buying a new rental property, and am going to 1031 exchange from an existing rental to fund the purchase. I am also thinking about moving into this house in a few years.

If I move into it later, is the capital gains bill due when I move in, or not until I sell the house? Is this a terrible idea?

Thanks!