The biggest challenge is with PG&E.

@Scott E.

Backyard studios are becoming very popular and I think it's a great way to generate more income and stand out in the neighborhood when it comes to resale.  

I started with the popular books like Rich Dad Poor Dad and ordered BiggerPocket's How to Invest in Real Estate.

I came across a property in a popular vacation spot in the Olympia national park.

There's also a less popular European Waterfall.

Quote from @Scott E.: Fair equity split is 50/50.Upon sale, you get paid back your principal first, he gets paid back his construction costs, and then you split the rest.Of course all of this should be run through an attorney to get everything outlined in a contract. 

A cash out refi has allowed us to remodel another rental e have and out a down payment on another house in buckeye to house hack!

Most "Mo & Pop" folks are looking to retire and have paid off their loans, have buildings and businesses that need some modernizingSo go do them a solid by taking it off their hands at a fair price and bring their business or property up to "Modern standards"They will thank you, I will thank you, the community will thank you, and your wallet will thank you!

See also this PG&E Guide for more information.