Frustrated sibing

A few months ago I was appointed Executor of an estate. My brother and I are the only heirs to the estate and the main (basically only) asset to the estate is real property. Here's the problem: I first offered to buy him out since he hadn't paid a red cent towards any property bills while living there for the past 10 years - no reply. My next offer was to put both our names on the deed of the property and I take out a mortgage and be 100% responsible for repayment (the house should almost be condemned as it falls 70% lower than the neighborhood comps based on a recent appraisal) - no response. I fear putting both of our names on the property deed because there seems to be a good chance that he will not agree to sign for a mortgage. Outside of a partition, what are my other options? I saved money by not hiring an attorney to have my brother removed as Executor (I am successor Executor) because as it stands now I am caring for two households. This has been going on for over 4 years