Rental insurance on a single family home built prior to 1940

[Patrick Bertrandt]

Hey Everyone:

This is my first post.  I have a single family rental home in my portfolio that was built prior to 1940.  Insuring it was never really an issue until just about a year ago when my premiums doubled because of the age of the house.  I tried to shop around but I have been finding a lot of companies that will not cover a house that old that is not owner occupied.  Does anyone have any experience in this area?  I'd be willing to consider coverage for the improvements as they exist and not necessarily the replacement costs. 

Thanks,

Patrick