It is critical that you and your tax representative adjust and track basis correctly to comply with Section 1031 regulations.
Gain is deferred, but not forgiven, in a like-kind exchange. You must calculate and keep track of your basis in the new property you acquired in the exchange.
The basis of property acquired in a Section 1031 exchange is the basis of the property given up with some adjustments. This transfer of basis from the relinquished to the replacement property preserves the deferred gain for later recognition. A collateral affect is that the resulting depreciable basis is generally lower than what would otherwise be available if the replacement property were acquired in a taxable transaction.