https://proconnect.intuit.com/community/form-8949/help/entering-a-bulk-sale-of-assets-in-lacerte/00/...
should get you there. Sell the building and the land and any other assets that go with the what I assume is a rental. If you don't have land listed with method of 99 (no depreciation) then there is a step to adjust the basis.
Answers are easy. Questions are hard!
