Partnering with Graham Lyster provided valuable local insights, making this an attractive and strategic investment for Partner Driven.

There are many reasons that I will provide but the biggest 2 in your case are that it will cost more than the value it adds and it is likely to make your existing SFH rent controlled.  

Ideally, we can connect next week and my team and I can provide a free consultation on what may work best for you and your Mom with a few more details, but if I were to take the situation at face value and try and brainstorm an idea. 

At a minimum, try to get it on their credit report, though with a business, couldn't they just start a new business and it would have little impact.

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Our team has assisted investors from Canada, the UK, Israel, China, Argentina and many other places do exactly what you are aiming to do.In addition, we can help you with finding great deals, point you in the direction of lenders if you need that, place you with one of our expert realtors, manage your rehab, and if you intend to hold we can provide Property management services,'Inbox me if you would like to discuss further-Leroy

Every item has a lifespan and collecting maintenance/replacement costs should start as soon as an item is put into service.There are lenders that will provide HELOC on rental properties but they are not extremely easy to find.  

Innovation and providing better services are what it's all about.Quote from @Tim Baldwin: Alex, it's a great question.

I sent her the check for returned security deposit by certified mail to a P.O. box she provided me.

CA taxes residents on worldwide income but may provide a credit for taxes paid to other states.