With the chain of records from ownership to closing: the original purchase deeds, the sale deeds, the notary's statements of adjustments, mortgage discharges, bank statements showing receipt, and conversion confirmations. The file should read from the first document to the last without a gap.
Build the path of funds the way a notary would
The lawful source is not in doubt, but the reviewer has to see it. Start with proof the couple owned the two chalets: the purchase deeds and the property tax accounts. Add the listing agreements, the accepted offers and the deeds of sale registered at the land registry, then the notary's statement of adjustments for each closing, which shows the gross price, the mortgage payout and the net proceeds.
Bank statements should show the net amount arriving from the notary's trust account and any subsequent transfers. When the money is converted to U.S. dollars, keep the confirmation with the rate and the date.
If part of the price is paid from savings or a personal line of credit, document those separately and confirm that any loan is not secured on the Vermont business's assets. Every document in French should carry a translation, and the whole set should be indexed so that a consular officer can follow the money in minutes.