The Specialty Premium Is Not What You Think | Corlan Market Intelligence
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MARKET INTELLIGENCE / MARKET READ

The specialty premium is not what you think

Cold storage trades tighter than generic warehouse. IOS prices in line with industrial. Data center transitional stayed wide. Assuming a flat premium by asset type is how sponsors get mispriced.

THE CORLAN DESK · UPDATED 31 AUGUST 2026 · 7 MIN READ · SOURCE: JLL Q1 2026, CORLAN RATE GRID
KEY TAKEAWAYS
  • Cold storage trades 25-50 bps tighter than generic warehouse, not wider. The tenant base is Lineage, Americold and USCS, and supply is constrained.
  • IOS (industrial outdoor storage) now prices in line with industrial warehouse as institutional capital entered, with life companies at 150-250 over treasuries.
  • Data center transitional debt stayed wide, SOFR + 400-700, because debt funds take the risk banks will not.
  • Specialty is not uniformly riskier. Some classes institutionalized and tightened; others didn’t. Assuming a premium by name is a mispricing risk, not a shortcut.

Two findings, both counterintuitive, both checkable

These come directly out of building our own rate grid across 56 subtypes. Both correct an assumption we, and most of the market, carried until the research said otherwise.

Cold storage tightened, it didn’t widen

Cold storage now trades 25 to 50 bps tighter than generic dry warehouse. The tenant base, Lineage, Americold and USCS, is institutional-grade and supply is genuinely constrained, so the market has priced it as the more defensible box, not the riskier one. The cold-over-dry cap rate premium compressed from 30-75 bps down to 0-50 bps per JLL’s Q1 2026 read. If your desk is still quoting cold storage at a specialty markup over warehouse, that quote is stale.

IOS caught up to industrial, fast

Industrial outdoor storage used to price as a specialty niche. It doesn’t anymore. Institutional capital has entered the space, life companies are quoting 150-250 bps over treasuries, and spreads as low as 165 bps have been reported. IOS now prices in line with mainstream industrial warehouse, which is a genuinely different underwrite than the one most lender lists still reflect.

SPECIALTY VS. THE ASSUMPTION
COLD STORAGE
Tightened
25-50 bps under warehouse
IOS
Institutionalized
In line with industrial
DATA CENTER, TRANSITIONAL
Stayed wide
SOFR + 400-700
Source: Corlan rate grid research, JLL Q1 2026 cap rate survey.

Where the premium actually held: data center

Data center transitional debt is the counter-case. It stayed wide, SOFR + 400 to 700, because debt funds are taking transitional risk banks won’t underwrite: the tenant credit question and utility access, not the real estate itself. A build-to-suit with a pre-committed hyperscale lease prices entirely differently, SOFR + 250-400 at 60-70% LTC, than a speculative or multi-tenant colo facility at 50-60% LTC and SOFR + 350-550.

"Specialty is not uniformly riskier. Cold storage and IOS institutionalized and tightened. Data center transitional stayed wide. An analogy can’t tell you which, and that’s exactly why an inherited rate should never display like a calibrated one."

What this means for how you shop a specialty deal

Don’t assume a premium by asset name. Ask what actually happened to that subtype’s pricing this cycle, not what it used to cost, and ask the tenant question first on anything data center. Getting this wrong in either direction, assuming cold storage is expensive or assuming data center transitional is cheap, costs real basis points on the term sheet.

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