The sale agreement, the closing statement from the lawyer or notary, title transfer records, bank statements showing receipt of proceeds, tax filings reporting the disposition, and the transfer records to the project's escrow. Each document should reconcile to the next so the path is unbroken.
Reconcile the sale to the wire, step by step
Hypothetical example: the family sold a section of orchard land to a neighbouring grower, received the proceeds through their lawyer's trust account, and later moved the money between two of their own accounts before wiring it to the project. Every one of those steps must appear in the file. The petition needs the agreement of purchase and sale, the statement of adjustments, the land title transfer, the trust ledger showing the payout, the bank statement showing the deposit, the internal transfer records, and the outgoing wire confirmation matching the subscription amount.
The family should also show how they came to own the land, at least in summary, because the lawful-source test reaches back to the acquisition of the asset that produced the capital; a purchase decades ago documented by the original transfer and a short explanation is generally sufficient. Any administrative fee paid to the regional center is shown separately and not counted as capital.