If you are unsure of your responsibilities I would read the MN AG landlord and tenant responsibilities guide.Most of the people you are likely to go after do not have a means to pay unless forced. 

The cost of the rehab is my financial responsibility which we estimate to be equivalent to his investment (40,000).

. @ Michael - Super helpful response.

The instruction sheet will tell you which models can be interconnected, and you can often get that sheet as a PDF from the manufacturer's web site before you buy.I've also seen a suggestion to make sure that wired smoke alarms are powered from a circuit that also has a light on it that is used relatively often - like the light over the stairs, or the front porch light, or similar. 

Thanks so much for the responses and insights!

We get covered up with responses, and you get to do a little screening of the interested parties by checking out their pages.

The county's web server can utilize cookies, encryption, redirects, javascript, json responses, firewall rules and many other means by which to make scraping difficult.

I will be writing about the deal with details in a separate post once it goes through.Many apologies yet again for the very late response and thank you so much for taking time out to all of you!

Their support is clearly off-shore, as you don't get a response for up to 24-48 hours.  

Maintenance is also (virtually) imaginary, since the tenant is responsible for virtually everything in the house, but I tossed that in there as well so you'd have a number.