Shallow-bay industrial's scarcity pitch is also its ceiling

Speed Bay Warehouse Solutions' head of acquisitions Michael Moriarty made the institutional case for shallow-bay industrial to IREI on three legs: durable income, a tenant roster of small and midsize businesses rather than a single credit name, and a supply picture that is expensive to duplicate. The third leg is the one that sets the ceiling.

Speed Bay defines the segment as buildings of 75,000 to 150,000 square feet, divided into units that average 5,000 to 25,000 square feet. In Moriarty's telling, shallow-bay carries a supply-and-demand imbalance favoring owners of well-located, functional product, and two forces hold that imbalance in place: the expense of replicating a shallow-bay asset and competition for land in quality infill locations. The result is a market that is supply-constrained and under-institutionalized, producing favorable operating conditions for the owners already in it.

The connection to the wider capital cycle runs through land, where Moriarty told IREI that competition for infill sites and data center development could further constrain supply and support rent growth over the long term. As this publication has argued, data center capital follows power and land; the shallow-bay version is that the parcels a warehouse wanted are the ones a data center campus wants, and the industrial owner holding one collects the benefit of a constraint it did not have to create.

The uncomfortable half of the case is the half Moriarty concedes: rising institutional and private equity interest is itself changing the sector, a measured way of describing capital arriving to capture an inefficiency and dissolving it on contact. Shallow-bay's appeal is that institutions have largely stayed out, leaving fragmented ownership, granular leases and assets too small for a core buyer's minimum check; money that shows up to harvest a mispricing is the mechanism that removes it, and the entry pricing that makes today's returns work is the first thing competitive bidding erodes.

None of that breaks the supply thesis: if replacement cost and infill scarcity hold as described, existing owners keep their operating advantage. What compresses is the spread between owning shallow-bay and buying it, and the interview arrives without a transaction attached — no fund, no portfolio, no price — so it reads as a statement of thesis rather than an early test of one. The test will be the first institutional-scale shallow-bay portfolios to trade and whether the cap rates on those prints leave room for the rent growth the supply story promises; if they do not, the durable income was durable for the seller.