https://www.irs.gov/publications/p523/ar02.html#en_US_2015_p...
Still, almost anyone who bought a house a few years ago in the area is sitting on at least $500k in gains. So even if taxes on the remainder are arguably fair from a revenue perspective, they are another constraint on housing market liquidity.
1) $250k deduction if single ($500k deduction if married) during the year in which the capital gains has occurred.
2) Convert the property to a business and use a 1031 Like Kind Exchange in which 100% of the profits can be rolled into a new property and deferred until that property is liquidated or the gains are realized.
For 2), you cannot do a like-kind exchange for residential property that you live in as your primary home.
For (2), if you convert the residential property into a business by renting it out, at what point can you do a 1031?