Family living there, not renting. 
This is either a 2nd home or an investment property that is not producing income. No deductible expenses other than, possibly, property tax on Sch A of 1040.

Do you do any research? Do you have access to Pub 17 or 1040 instructions?

I know you took over a tax business with no experience but, it would be in your best interest to make use of IRS tutorials, etc