You should total all the asset basis and use a ratio of the individual asset to the total when you sell off the entire property. Use the same ratio for the sales price and the cost of sale. And the reason you need to sell off all the assets using the correct ratio (not just $1) is because the land, home and other assets like appliances & furniture have different depreciation recovery methods. Figuring ratios was something you were taught in grade school so get out a calculator, excel worksheet or even just a pencil & paper and do some simple figuring.
ALL the assets listed for depreciation need to be sold so you need to allocate the sale price & costs of sale over all of them. You need to make yourself a table so you have all the info needed when the program asks for it since the program will not do the allocation for you.
A simple allocation example using 100,000 of assets and a sale price of 200,000 and cost of sale of 20,000 :
assets original basis % of total basis sales price cost of sale
house 70,000 70% 140,000 14,000
land 20,000 20% 40,000 4000
appliances 10,000 10% 20,000 2000
totals 100,000 100% 200,000 20,000
