Assemble
Capital

Insights

Understanding Downside Protection in Private Deals

Oliver Thornton · January 26, 2026

Downside protection gets talked about as if it's a feature you can bolt onto a deal — an insurance policy, a guarantee, a reassuring line in a pitch deck. It isn't. It's a byproduct of decisions made months before an investor ever sees the offering: how the deal was sourced, how conservatively it was underwritten, how much leverage sits on it, and where each dollar of equity sits in the capital stack if something goes wrong. None of that eliminates loss. It changes how severe a loss can get, and how likely one is in the first place.

The clearest way to see the difference between a deal built for downside protection and one that wasn't is to put two real outcomes side by side.

A Loss and a Win, Both on the Record

8070 Laurelmont Dr, a studs-out rebuild in Mount Olympus, carried more new-construction scope than a typical remodel — retaining walls, more than 30 caissons. The project generated a gross property-level profit before debt and carry, and sponsor equity still returned only 0.73x after 48 months. It's disclosed next to the six exits that worked, not buried, because downside protection that only gets mentioned when things go right isn't downside protection — it's marketing.

Compare that to 7212 Mulholland Dr, a Hollywood Hills remodel-and-refinance: $700,000 of equity returned $1.87 million in 16 months, a 2.68x multiple and roughly an 84% IRR. Nothing about that outcome depended on catching a market peak. It came from a tight scope, a fast refinance, and a short hold — the kind of deal that has room to be wrong about something and still work.

What separates those two isn't luck. Laurelmont's extended timeline and heavier construction scope meant more months for costs, financing terms, and market conditions to move against it — exactly the kind of exposure a shorter, tighter-scoped project like Mulholland was structured to avoid. The lesson from a 48-month rebuild that returned 0.73x isn't "development is risky." It's that scope and duration are underwriting variables, not details to be worked out later.

Basis and Leverage Set the Room for Error

Entering at an attractive basis is the single most powerful lever available before a project ever breaks ground. A strong basis absorbs market softening, an extended hold, or pricing pressure without threatening the capital underneath it. Thin basis means even a minor disruption can turn into a permanent loss — there's no cushion left to work with.

Leverage interacts with that cushion directly. Debt amplifies whatever happens to a project, good or bad, so the relevant question isn't how leverage performs in an ideal scenario — it's how it behaves when a timeline slips or a refinance doesn't come through on schedule. Lower, more conservative leverage keeps the decision in the sponsor's hands rather than the lender's. That's what let Mulholland refinance quickly and cleanly instead of getting boxed in by covenant pressure.

Underwriting has to assume friction, not perfection. Timelines get modeled past the best case, costs carry real buffers, and exit pricing gets set conservatively. That doesn't prevent every loss — Laurelmont proves it can't — but it reduces how sharply a deal reacts when reality deviates from plan, and reserves exist for exactly the same reason: to absorb an unexpected cost without forcing a change in strategy mid-project.

Discipline Shows Up Most in What Gets Declined

A meaningful share of downside protection happens before a deal is ever acquired, in the form of what gets turned down. The written rejection criteria include insufficient margin, inadequate comparable-sale depth, excessive entitlement risk, and dependence on a single speculative exit — and any one of them, on its own, is enough to walk away. That willingness to pass is part of what produced a blended 2.13x equity multiple across the team's seven documented exits (2.38x excluding the one loss), on 53.9% gross profit against total project cost. The asymmetry in those numbers — modest downside, meaningfully larger upside — didn't come from a clever trade. It came from the deals that got rejected before they could become the problem this article is about.

Illiquidity Is a Constraint, Not a Footnote

Private real estate doesn't offer an exit button. That reality has to shape how capital is committed in the first place — sizing positions so a temporary setback doesn't force a sale at the worst possible moment, and avoiding the kind of concentration where one underperforming deal threatens an entire portfolio. A forced sale is usually what converts a recoverable problem into a permanent one; the goal is never needing to make that choice.

Stress testing is how a deal's real downside gets evaluated rather than assumed. Running a project through cost overruns, a delayed exit, or softer pricing before capital is committed reveals fragility that a base-case model won't show. A deal that can't survive a reasonable stress test isn't protected no matter how it's presented in an offering memo — and a deal that can survive one, the way Mulholland's tight scope and fast refinance did, is protected whether or not anyone calls it that.

What Downside Protection Actually Buys

None of this promises an outcome. Losses can still happen — the record includes one. What structural discipline changes is the probability and the severity: a higher chance that capital survives a bad stretch, and a shorter list of ways a single bad assumption can turn into a permanent write-down. That distinction matters because investors who take a severe loss early in their private-market experience tend to leave the asset class altogether, while investors who avoid catastrophic losses stay in long enough to let smaller wins compound.

Capital preserved compounds quietly. Avoiding a large loss does more for long-term performance than chasing an exceptional one, because there's no recovery drag eating into the next several years of returns. That's the actual argument for evaluating downside before upside: when the downside is acceptable, the upside is worth discussing. When it isn't, the projected return on the cover page is irrelevant.

Guarantees and optimistic exit assumptions can manufacture the feeling of safety without the substance of it. Real downside protection is visible in the numbers, the structure, and the process — in where a deal sits in the capital stack, how much basis cushion it has, and what happened the one time a project didn't work. It should be able to survive being looked at directly, not just described.

Project results referenced in this article were achieved by the principals through Thornton Development Group and affiliated entities. Thornton Development Group is an independent company operated by the same principals who manage Assemble Capital; the two are separate companies. These projects were not Assemble Capital offerings and did not involve Assemble Capital investors. Figures are sponsor-level, unaudited, and drawn from internal records. Past performance is not indicative of future results.

This article is for general informational and educational purposes only. It is not, and should not be relied upon as, investment, legal, tax, or accounting advice, and it is not a recommendation or endorsement of any strategy or investment. Consult your own financial, tax, and legal advisors before making any investment decision. See our full Risk Disclosures for additional information.

Future Opportunities

Want to invest in the next one?

Get in touch and we'll walk you through the model, the pipeline, and what a specific offering looks like.

Contacting us is not an offer, commitment, or investment. Any offering is made only through definitive offering documents to eligible investors.