@Yeti wrote:
Any path to being able to claim/ carry forward the 2020 expenses?
Even if you were able to satisfy the (less than) 15-day rule of Section 280A(g) (by renting for 15 days, or more, for the 2020 tax year), you would still most likely have to divide your total expenses between rental use and personal use based on the number of days used for each purpose.
See https://www.irs.gov/taxtopics/tc415
