I assume you are working on your 2016 return.
Capital loss carryover amounts from 2015 are not relevant to your question.
The short term capital loss* on the sale, is entered as the sale of a business asset.
How you handled the purchase on you 2015 return is relevant to how you handle the sale in 2016. If you started depreciation, you have a capital loss, and possibly some depreciation recapture (income). If you deducted the cost, in 2015, you will have to report the sale amount as rental income.
*It will be a long term capital loss if it was in service for more than 365 days.
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