I don't think you are going to be able to get insurance for two separate living units in a single-family when they are both illegal and likely do not have the correct egress windows (basement) for fire safety which could subject you to huge liability if something happens to either party.

Most other things are worth attempting to resolve yourself after ensuring safety and doing research.

Look at things like safety, schools, local amenities, and the overall vibe.

However, your lesson is get more personally involved.  

I came across some critical information today that I think is important to share with you:In the aftermath of the LA fires, it has become evident that some homeowners’ insurance claims have been denied or disputed because the property title was held in a trust, but the insurance policy was under the individual homeowner’s name.This serves as a valuable reminder to review your insurance policies and ensure that the ownership structure on your property title matches the named insured on their policy.

Earthquake fault zones, flood plains, and high fire hazard areas are off-limits.

Lessons learned?

Here are some key elements to include:Lease Agreements: Ensure your contracts reflect the latest laws, such as notice periods for entry or rules around security deposits.Fair Housing Compliance: Familiarize yourself with federal, state, and local fair housing laws to avoid discriminatory practices.Property Standards: Regularly inspect your properties to ensure they meet safety and habitability standards.Tax Documentation: Keep accurate records to comply with tax reporting requirements.4.

Insurance is higher in the rural areas of SD due to fire danger.

Their stories fueled my fire.