It sounds like the daughter's boyfriend has moved in, and the dad wants to put him on the responsibility for the lease to make it more official, which seems very reasonable. 

As for the non-permitted work...well that would depend on your local building official to determine how much trouble you're in with that.

https://www.thetaxadviser.com/issues/2012/dec/clinic-story-06.htmlThe fascinating part about this article is that its author works for "Gray, Gray and Gray LLP" CPA firm.

Authorized a few small projects that our good tenant wanted to complete, refinished the bathtub, sprayed for pests/bugs, and cleaned up the outside of the property.

Authorized a few small projects that our good tenant wanted to complete, refinished the bathtub, sprayed for pests/bugs, and cleaned up the outside of the property.

Well 4 years later, a few of them have done multiple deals because they weren't just official meet up attendees with no real money or resources, they were actually in the game because they emerged themselves in the world of real estate at the most entry level possible.

I would also include a clause that they are not authorized to deduct profits from other properties to cover expenses without prior approval.

This document grants the broadest range of powers to an individual.A Specific Power of Attorney is a written authorization that grants an AGENT or ATTORNEY IN FACT the authority to act on behalf of the Client under certain, specified circumstances.

When I asked him why,  he says that Earthquake insurance policies are all by CEA (California Earthquake Authority) which is privately held.  

I am about to start The 4 disciplines of execution after listening to the BP podcast with the author.