Is $500K of Landlord Personal Liability per Occurrence Reasonable

[Lauren M.]

I purchased a duplex last month. The current management company asks that I maintain $500k of landlord and premise liability insurance per each occurrence and asks that we add them as an additional insured. I checked my current insurance policy and it only has $100k for "personal liability: each occurrence". Does $500K sound extremely high? I'm scared it will make my insurance premiums skyrocket.