If the loan is a closed end consumer loan secured or to be secured by real estate (DIRT, or TRID backwards), Reg Z (TRID) disclosures are required. Uncle will be asked to join in the mortgage deed or otherwise pledge his interest, and it's his principal dwelling, so I'd say he has a right to rescind and will get a copy of the disclosures.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8