Using WACC to Measure the True Risk of Leverage

One of the most common and costly errors in evaluating a real estate equity investment is underestimating the risk that debt introduces. Investors are naturally drawn to the upside: the advertised internal rate of return, the projected equity multiple, the story of value creation. Far fewer pause to ask whether the return they are being offered is actually adequate compensation for the leverage embedded in the deal. Heritage Hill believes every investor should have a simple, reliable tool for answering that question, and weighted average cost of capital, or WACC, is that tool.

What WACC Represents

WACC is the blended cost of all the capital used to finance an investment, weighting each source by its share of the total. Put another way, it is the return the entire capital stack, debt and equity together, needs to earn for the investment to meet its objectives. It captures, in a single number, the price of the money funding the deal.

Before applying it, an investor needs to understand exactly how a deal is capitalized: how much senior debt, how much junior or mezzanine debt, and whether there is any preferred equity in the structure. Debt is almost always cheaper than equity, for a straightforward reason. Lenders are repaid first and typically hold a first lien on the property as collateral, which makes their position the least risky in the stack. Equity sits at the bottom, absorbing losses first and getting paid last, so it demands a higher return. The cost of equity is an estimate grounded in the manager's business plan assumptions, which is exactly why prospective investors should insist on receiving and reviewing those assumptions rather than taking a headline return at face value.

The Formula

WACC is calculated as:

(percent financed by debt multiplied by the cost of debt) plus (percent financed by equity multiplied by the cost of equity)

The result is the total cost of capital for the investment.

Working Through an Example

Take a hypothetical deal financed with 60 percent debt at a 5 percent cost and 40 percent equity at a 20 percent cost. Plugging in:

(60% times 5%) plus (40% times 20%) equals 3% plus 8% equals 11%

So the investment's total cost of capital, across both debt and equity, is 11 percent.

Now comes the revealing part. Suppose we keep the very same property, with the very same asset-level risk and business plan, but change only the capital structure by using more debt and less equity. What happens to the risk borne by equity?

Hold the total cost of capital constant at 11 percent and increase leverage to 80 percent debt. Two things shift. First, the cost of debt itself rises, because lenders charge more when they advance a larger loan against the same asset; more leverage means more risk for them too. Say the debt now costs 6 percent. Second, we solve for the new cost of equity that keeps the overall WACC at 11 percent:

(80% times 6%) plus (20% times x) equals 11% 4.8% plus 20%x equals 11% 20%x equals 6.2% x equals 31%

The required return on equity has jumped from 20 percent to 31 percent. Nothing about the building changed. The only difference is that more debt was layered into the structure, and that additional leverage pushed the risk, and therefore the required return, on the equity sharply higher.

What the Math Is Telling You

This is the heart of the lesson. Leverage does not create value on its own; it redistributes and magnifies risk. When a deal carries more debt, the equity slice sitting beneath it becomes far riskier, and a rational investor should demand a correspondingly higher return to accept that position. A 20 percent projected return on a conservatively financed deal is not the same as a 20 percent projected return on a heavily leveraged one, even if the property and plan are identical. The second demands much more to be fair.

Practical Guidance for Investors

Run the WACC calculation on any opportunity you are seriously considering. It takes only a moment and it reframes the entire risk conversation. Be especially cautious with deals whose loan-to-value ratios climb beyond roughly 75 percent, where the compounding effect of leverage on equity risk becomes pronounced.

Do not let advertised returns do your thinking for you. Those figures are frequently propped up by optimistic assumptions that may prove difficult to achieve, and higher leverage is one of the easiest ways to make a projected return look attractive on paper. A trustworthy manager will be transparent about exactly how much debt they are using and why. But remember that every operator wants to raise capital as cheaply as possible, and cheap capital for the operator often means more risk for the equity investor. It falls to you to demand a fair return for the risks you are actually taking.

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Partner with Heritage Hill

The same clear-eyed view of leverage that WACC brings to light guides how Heritage Hill capitalizes its investments—using debt deliberately and transparently rather than layering it on to flatter a projected return.

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This material is for informational and educational purposes only and does not constitute an offer to sell or a solicitation of an offer to buy any security. Private real estate investments involve risk, including the possible loss of principal. Past performance is not indicative of future results.