I am filing separately. Who gets to deduct the house and the charitable donations? Me or my husband?

I had a lot of medical expenses this year and I have my own health insurance.  If we file separately, I will be able to itemize and deduct those expenses, as they exceed 7.5% of my income.  But who will get to deduct things that are in both our names, such as the house and charitable donations and summer/winter taxes?