It helps for warranty claims down the line.For GAF shingles, the 25-year warranty usually requires online registration.

Real- Estate  is a lot tougher game now because of technology now allowing buyers, sellers to access the market using the internet without using agents but  you do have hot areas that can support  more bodies .

You can probably find an online link about how extreme temperature changes are not the ideal way to heat a home and cost more in the long run.I don't know what the local rental rules are where you are, but look them up and see if you can give her notice. 

If EVs ever start coming with bidirectional charging that will be a massive game changer in the electricity market. 

hope this helps. turnkey might be a good fit for you. but real estate is a long game.

In any partnership you can't just cut a check and hope for the best especially if you're providing the money and the other partners don't have more than their time in the game.

Check online reviews and interview multiple contractors to compare bids.

I do agree with everyone here that their customer service is by far the best I have ever had comparing to any other online investment platform.

You don't get better roi -- build a nice monthly income with a couple props in this realm and then move on to a "better" area to play the lower returns hopeful appreciation game - or consider single family, flipping etc.  

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.