You cannot depreciation the entire Real Estate with Buildings and Lot, as one unit. Land does not depreciate.

$100 for the transfer is a sale, not a "grant." Who was on the title, who still is on the title, is there also a mortgage or other debt on the property. Did it All get put into the name of the LLC?

If this is a Community Property State, you can't give something to someone who already has a rightful ownership interest in it. She can put it into the LLC name.

"would he claim this property as a loss?"

Sheesh; who is guiding these people? There needs to be some legal advice, which you cannot get from strangers on the web.