Your insurance is going to be highly variable and I wouldn't use what an agent or the seller tells you as the cost of dwelling policies have increased substantially over the past few years due to rising new construction costs. 

Quote from @Steve Tse: Hi BP, What insurance carriers can you recommend in Texas, as I am shopping around to replace my landlords policy that I currently have with Travelers ?

Here are a few I have looked at, By the way I have no affiliation or connection to any of these other than the investment I made with Lofty.AI I mentioned earlier.

Here in Hawaii, condotel (vacation rental condo) financing is different from typical condo financing, so important to work with a local lender.

@Matthew Kwan, he is asking why the underwriters will not allow him to use the proposed rental income from the subject property at time of purchase.

I own property and have no children or real persons that I want to inherit my property after death. 

So here is my story.

Going to networking events to network with Realtors, Mortgage, Title etc all helps. 

Leo, good to see you here brother!

The current owner is usually not be very inclined to give the news to the tenant out of concern that the deal does not close and they have to deal with the vacancy.