Q. Are homeowners dues on a vacant lot held for resale deductible?
A. No. Investment expenses* are no longer deductible. Even in the "old days" (prior to 2018), investment expenses were only a misc. itemized deduction. You only got to deduct that portion of your misc. itemized deductions that exceeded 2% of your AGI, and then only if your total itemized deductions exceeded the standard deduction (which was doubled under the 2018 tax law. . (2% rule explained: https://ttlc.intuit.com/questions/2902781-what-is-the-2-rule ).
*Investment interest is deductible, as an itemized deduction, but only to the extent of investment income,
