No, that could potentially result in the wrong amount of tax due to Unrecaptured Section 1250 Gain.

You can either:

1. Allocate the sales price between the assets.  So the improvements will have an amount entered, even if it is the same as the Adjusted Basis (resulting in $0 gain/loss).
2. For all assets enter a sales date but leave the sale price BLANK.  Then manually enter the appropriate numbers on the "Enterable 4797".