Umbrella insurance question

[Carl Hebert]

Hello everyone, 

I currently have 6 properties all in Maine and all insured through Allstate. 5 are landlord policies (3 unit, 4 unit, 3 unit, sfh and 3 unit) and one is home owner (4 unit). I asked my Allstate agent about getting an umbrella policy and he said it wouldn't cover rental property. I know I have read quite a few articles on getting an umbrella policy for added protection here on BiggerPockets. 

Has anyone been able to get an umbrella policy through Allstate? I would really like to stay with them and was wondering if my agent was just mistaken.

I also have my vehicles insured through them.

Thanks!