The signed purchase agreement, evidence that the funds have been transferred or placed in escrow with defined release terms, the lease or property deed, and the entity's organizational documents showing the buyer's ownership. Draft agreements do not show an irrevocable commitment.
The application is filed after the money moves, not before
A frequent error is to apply with a letter of intent and a bank balance, expecting to close after approval. The consular officer needs to see capital already committed and at risk. The workable sequence is: sign the purchase agreement with an escrow clause under which funds are held by a third party and released to the seller on visa issuance, or transfer the funds outright if the buyer accepts the risk; then file with the executed agreement, the escrow account statement, and the lease or deed.
Hypothetical example: a Lac-Beauport caterer buying a U.S. commercial kitchen and catering business signs the agreement, wires the price into escrow, and takes possession of the lease conditionally; the file shows a business she cannot walk away from without loss, which is what irrevocable means. Add the entity's formation documents and ownership ledger, the seller's recent tax returns, a business plan with staffing projections, and the source-of-funds chronology.