Generally, the expenses incurred and paid in connection with managing and maintaining the property while it is vacant are deductible. Your regular reoccurring expenses (such as utilities and taxes) would be deductible.
You can also deduct the amounts paid for repairs and maintenance. However, you cannot deduct the full cost of improvements. Repairs are usually generally quick fixes that help keep the property habitable and in good working condition. Although the price is irrelevant, most of my qualifying repairs tend to cost less than $500. Per the IRS, repairs in most cases do not add significant value to the property or extend its life.
Improvements, on the other hand, are anything that increases the value of the property or extends its life. These are categorized as a “capital expense” and must be capitalized as a long-term asset and depreciated over multiple years. You can deduct a small but even portion of these expenses in the current year with depreciation expense.
Improvements are usually more labor-intensive than repairs and typically cost substantially more. A rule of thumb is if you’re adding a new item or upgrading an existing item, then it’s usually considered an improvement.
Repair Examples:
- Fixing a broken lock
- Painting
Improvement Examples:
- HVAC system
- Renovating a kitchen
- Replacing a roof

For more information, please see Publication 527 and search for the Repairs and Improvements section.