The dominant pattern is proceeds from a single property sale, ideally one acquired with documented capital, held for a clean period with tax filings showing rental or holding income, sold in an arm's-length transaction, and recorded with the local housing authority. The documentary architecture typically required includes the original deed and purchase price, evidence of the source of original purchase capital (whether earned income, a prior property sale, an inheritance, or a documented loan), holding-period tax returns covering the years the investor owned the property, the sale agreement, transfer-tax records, escrow or closing statements, and proof that the buyer is unrelated to the seller. USCIS reviewers cross-check buyer and seller surnames against family trees and prior immigration filings; related-party sales draw additional scrutiny, sometimes including questions about whether the price was below market.
A second pattern is refinance proceeds, including HELOC draws against U.S. real estate. Bank-issued HELOCs against U.S. properties tend to be among the cleaner SOF inputs for this profile: the lender is regulated, the loan documentation is standardized, and under the principle reaffirmed in Zhang v. USCIS (D.C. Cir. ~2020), "cash is cash" and the investor does not need to source the bank's funds. The bona-fide-loan standard from Matter of Izummi still applies, and post-RIA practice expects a reasonable interest rate, a documented repayment plan, and a clean lien on the property. Practitioners regularly observe that misrepresentations on the loan application, such as checking "not for investment purposes" when the funds are in fact intended for an EB-5 investment, can be treated by USCIS as evidence of unlawfully acquired funds.
A third pattern is rental income accumulated over a holding period. This is documentary heavy: the investor must produce holding-period tax returns showing rental receipts, bank statements showing the deposits in normal course of business, lease agreements supporting the income claim, and a clean separation between rental cash flow and personal funds. Commingled accounts, in which rental income is mixed with W-2 income, gifts, or other deposits, typically require annotated statements identifying which deposits relate to which property and, often, a CPA declaration tying the numbers together. Battineni v. Mayorkas (D.D.C. 2024) and Zhou v. Noem (D.D.C. 2025) have narrowed USCIS's reach on path-of-funds tracing through commingled accounts, but the rulings are not binding on adjudicators outside the parties and USCIS continues to demand robust path documentation.
A fourth pattern, more common in foreign portfolios, is proceeds from the sale of a long-held or inherited property abroad. RIA Section L now expressly requires seven years of tax returns (any kind) and unlimited-look-back disclosure of civil or criminal judgments. For inherited property, the chain typically extends to probate or intestate-succession records, the decedent's earnings or asset base from which the property was originally acquired, and a foreign legal-expert opinion on local inheritance law. Aged-asset look-backs of ten or more years are now standard for inherited corpus, particularly under the current adjudication environment in which I-829 source-of-funds RFEs routinely reopen questions practitioners considered resolved at I-526E.
The framing principle for this profile is the multi-property "pick-the-cleanest" approach. Practitioners report that USCIS is more receptive to a fully documented chain on a single property generating most or all of the $800,000 than to a patchwork of partial chains across four or five properties. Using ten possible sources to reach $800,000 typically multiplies RFE risk; choosing the path of least resistance tends to produce a cleaner record. Whether any particular combination is sufficient depends on the entire record and the discretion of the adjudicating officer.