It sounds like you are just having trouble pulling the trigger. 

Is this legal?

This is a great place to learn and to connect with people so take advantage of all the great resources.

I'm just gonna leave this here...

What was your experience like?

A Qualified Joint Venture (§761(f)(2) )allows two spouses operating a business together to not file a partnership return; however the business can't be held as a state entity (§301.7701-2) like an LLC and it also requires material participation by each spouse under §469(h) which can be hard with a SFH. 

This is how banks verify property owners maintain insurance.

I eventually sold this property.

We would like to offer our tenants this cool amenity.

Since part of your home is a rental, you can deduct a portion of expenses like mortgage interest, property taxes, and utilities.