Saw this over at MMM and thought this would be of interest to any live-in flippers expecting to have their capital gains shielded from taxation when they sell...

It seems the House tax plan would redefine "principal residence" as a place one has lived in for 5 of the past 8 years rather than 2 of the past 5:

Obviously, the proposed tax plan is changing moment to moment and the final version -- if it passes -- is what matters. Still, something to keep an eye on.