How you treat this depends on whether you have put it on the market as a rental. If you establish that you did, you can deduct property taxes and HOA fees on schedule E, along with the appropriate depreciation (and other relevant expenses, if any, like advertising). If you haven't, the property tax can get deducted on schedule A. (Your single-member LLC is a disregarded entity for tax purposes.) If your attempt to rent it began during a tax year, it's schedule A before that date, and schedule E, after.

Mr. Conway gave you the answer. If, as you said, it was strictly an investment ( we assume for rental and future sale ), then you can depreciate the property, take all taxes, fees and maintenance costs againt your ordinary income. You might also be able to take accelelarated depreciation to get a quick benefit, however I never recommend that to small individuals. Because, when you sell it, it comes back to bite you in the A_S.

I hope this answers your question. If you need more, feel free to contact me.