For the equity portion, company financial statements, tax filings, the dividend resolution and the bank trail. For the borrowed portion, the loan agreement, the registered mortgage, evidence of the property's ownership and value, and the repayment record.
Two chains, each one continuous from origin to the investment account
Think of the file as two unbroken chains rather than a folder of papers. The first begins with the sawmill's trading history: audited or accountant-prepared statements over several years, corporate tax returns, and the minute or resolution declaring the dividend that funded Terrence personally. It continues through his personal tax filings and bank statements into the account used for the investment.
The second begins with the home: title, purchase history, any prior mortgage discharged, a current valuation, then the loan agreement, the security registration and the advance of funds. Both chains must arrive at the same destination without a gap where money sat in an unexplained account or passed through a third party. Documents not in English require certified English translations.
Where a step cannot be documented, it is better to identify it early and explain it than to hope it goes unnoticed.