Thank you for your response regarding the deminimus threshold.  Greatly appreciated.  Currently, there is about $15k in expenses for the period of rental through sale listing at 12/20, of which $4.5k relates to the AC unit.  I don't believe they itemized invoices to consider the deminimus threshold of $2500 per item.  Since the property is now sold as of February 2021, no more depreciation applicable to the future years.  As expenses (repairs, maintenance & improvements) are greater than $10k, appears the safe harbor may also limited?