Difference between Homeowners Insurance vs. Umbrella

[Greg Rusianoff]

What is the difference between Homeowners Insurance and Umbrella? I own 5 SFRs through an LLC. They are all in one LLC. I am concerned, because one of them is not up to code, and it will take some time for me to get it up to code. However, there is someone living in it.

How do I best protect myself? From what I understand, homeowner insurance won't insure a house until it is up to code. Would umbrella insurance protect me up to a point?

How much would a typical policy cost to insure 5 properties valued at a combined 300k (Approximately).