I'm preparing a small claims case against my former property owner. Do I need to add their insurance company?

I turned in a claim to my former property owner to compensate for losses to my personal property because they did not disclose to me that the chimney was broken and the fireplace was unusable (they actually had all the firestarting equipment in the adjacent cabinet). The house caught fire and burned down. I received a response from their insurance company denying liability and compensation. I feel the property owner is liable for neglecting to tell me not to use the fireplace. Since I've been denied by their insurance company, do I have to add them as a defendant in the small claims court case?