:)CheersLucasThere is no Limit on expenses you can deduct. 

@John Flanders In the early years, you may not have any taxable income due to your depreciation deduction. 

Also, maybe you do some purchase for that llc so you can deduct them like maybe going to real estate conference, or buying some sort of software to track your investment or market reports.

@Ashley Levy what you found is correct.

For smaller costs, under a certain threshold provided by your CPA, you are able to deduct those on your P&L right away.

Within thirty (30) days of the move‐out date, if more issues discovered that were not discovered during the initial walk‐through or were incurred after the initial walk‐through but before the move‐out date, they will be repaired/ addressed by landlord and related cost will be deducted from the security deposit.

If they still insist they didn't cause the damage, can I still deduct the cost of repair from her deposit?

Their default answer was that any remaining funds would be deducted from the principal upon completion.

This is due to non-cash deduction (i.e. depreciation).

After you deduct insurance your cash on cash might be single digits.