Why Commercial Real Estate’s 20% Down Rule Is Losing Its Grip

A familiar assumption in commercial real estate is that a buyer needs roughly 20% equity to get a deal financed. That rule of thumb is becoming less reliable. Lenders are increasingly pricing risk property by property, while borrowers are using layered capital, seller participation, and creative structures to close transactions that would have failed a few years ago under a simple loan-to-value test.

The change matters because equity is now the scarcest part of many transactions. Debt is available in parts of the market, but it is more expensive, more selective, and more sensitive to cash flow. A buyer who can solve the equity gap without overleveraging the asset may have a meaningful advantage over a better-capitalized competitor relying on a conventional structure.

Why the old benchmark is under pressure

The 20% figure was never a universal underwriting requirement. It was a shorthand for a 75% to 80% loan-to-value range, often paired with a debt-service-coverage ratio that gave the lender room for error. In today’s market, however, value volatility, refinancing risk, insurance costs, and uneven rent growth can matter more than a single LTV threshold.

That is pushing lenders toward a more granular view of risk. A stabilized grocery-anchored center with durable tenants may attract a different capital stack than a suburban office building facing lease rollover, even if both assets have the same appraised value. In some cases, a lender may accept a higher leverage position because the cash flow is unusually resilient. In others, an apparently conservative loan may still be rejected because the income stream is fragile.

The result is a wider range of acceptable equity contributions. Some deals require substantially more than 20% because the lender wants a larger cushion. Others can close with less cash from the buyer when the sponsor brings strong operating history, the property has verifiable income, or additional collateral supports the loan.

The rise of layered capital

When senior debt does not cover the buyer’s target proceeds, the gap is increasingly being filled with a combination of capital sources rather than a single check. Preferred equity, mezzanine debt, seller financing, earnouts, and purchase-price adjustments can all change the amount of cash required at closing.

Each tool solves a different problem. Seller financing can bridge a valuation disagreement while giving the seller ongoing income. Preferred equity can reduce the buyer’s upfront contribution, but it usually carries a priority return and can materially affect the sponsor’s upside. Mezzanine debt preserves ownership economics but adds another layer of interest and repayment risk. An earnout can defer part of the purchase price until a leasing or operating milestone is reached.

These structures are not interchangeable, and they are not automatically cheaper than traditional equity. Their value is flexibility. A transaction that cannot support a larger senior mortgage may still work if the remaining capital is matched to the property’s risk and expected timing of cash flows.

What buyers should underwrite differently

The first question should no longer be, “Can I put 20% down?” It should be, “What capital structure can this property safely carry through its next risk event?” That event might be a major lease expiration, a maturity date, a required capital project, or a period of slower demand.

Buyers should model the full cost of capital, including preferred returns, extension fees, interest-rate caps, refinancing assumptions, and any required reserves. A lower initial equity check can be attractive, but only if the property can produce enough cash flow to support every layer during a stress case.

They should also test exit flexibility. A structure that works at acquisition may become restrictive if the buyer needs to sell, refinance, or contribute additional capital. Intercreditor agreements and preferred-equity documents can determine who controls major decisions when performance falls short.

Implications for sellers and owners

For sellers, a flexible capital structure can expand the pool of credible buyers, but it also makes diligence more important. The strongest offer is not always the one with the highest headline price. Sellers should evaluate the certainty of financing, the buyer’s remaining liquidity, the terms of any seller note, and the conditions that could reopen the economics before closing.

Owners considering a refinance or sale should prepare for a more detailed conversation about property quality. Clean operating statements, documented tenant history, realistic capital-expenditure planning, and a clear explanation of near-term risks can directly affect the amount and cost of available capital.

A more flexible, but less forgiving, market

The fading of the 20% rule is not a return to easy money. It is a sign that commercial real estate finance is becoming more customized. Capital is available, but it is being allocated to specific cash flows, sponsors, and downside protections rather than to broad property categories alone.

For buyers, that creates opportunity—but only for those willing to underwrite beyond the closing date. For sellers, it rewards preparation and realistic pricing. The central question in today’s market is not how much equity a transaction requires in the abstract. It is whether the entire capital stack can withstand the property’s next challenge without forcing a costly decision at the worst possible time.