Net absorption vs. net new supply: what actually moves industrial rents

Every quarter the same two numbers get thrown around in industrial market reports: net absorption and net new supply. Analysts lean on them to call where rents are headed, but the two metrics measure different things, and conflating them is how a market gets called "tight" the same quarter three million square feet of spec product breaks ground nearby.

What each number counts

Net absorption is a leasing metric. It's the change in occupied square footage over a period: new leases signed minus space given back through terminations, expirations that don't renew, and move-outs. It tells you demand, how much space tenants are putting into use.

Net new supply is a construction metric. It's square footage delivered, certificate of occupancy in hand, minus any demolitions or conversions out of industrial use. It tells you what hit the market, regardless of whether anyone leased it yet.

Rents move on the relationship between the two, not on either number alone. A market can post strong net absorption and still see rent growth stall if net new supply ran ahead of it for the prior four to six quarters, because the vacancy created by that earlier wave hasn't been chewed through. The opposite shows up too: modest absorption in a market with almost nothing under construction still compresses the logistics vacancy rate and gives landlords room to push rent on renewals.

Why the under-construction pipeline matters more than either headline number

The real forward signal is the under-construction pipeline relative to the standing base. A market with 40 million square feet of inventory and 6 million under construction is bringing on roughly 15% new supply before a single one of those buildings leases up. Even if trailing net absorption has been healthy, that pipeline has to clear before vacancy compresses again. A permit tells you a project was approved. It doesn't tell you whether the project broke ground, stalled mid-build, or got value-engineered into a smaller footprint, and that's exactly the gap permit filings are slow to close.

Regional shed supply doesn't move evenly across a metro, either. A submarket can show flat headline absorption while one corridor near a new interchange leases every spec building as it delivers, and an older infill node sits half empty a few exits away. Metro-wide net absorption and net new supply figures smooth over that split, which is exactly the detail that matters when you're sizing one submarket for a leasing or acquisition decision rather than reading a quarterly report for a general sense of direction.

Reading the two together

A rough way to read it: rents firm up when trailing net absorption has been running ahead of net new supply for several consecutive quarters and the under-construction pipeline is thin relative to standing inventory. Rents soften, or at least stop climbing, when new supply has outpaced absorption and there's still a meaningful pipeline left to deliver. Vacancy rate is the scoreboard, the cumulative result of both figures over time, but it's a lagging one. By the time vacancy ticks up in a quarterly report, the supply that caused it has usually been visible on the ground for a couple of quarters already.

That gap is the problem an analyst runs into on a sizing memo: a broker's seat-of-the-pants read of a submarket doesn't give you a running count of what's gone vertical, shed by shed, independent of when a permit office or news wire gets around to reporting it. Warehouse Footprints builds that count from high-res imagery on a quarterly cadence, flagging new large-format sheds and yard extensions as they're built rather than as they're filed.

If you're sizing a region's shed supply ahead of a leasing or acquisition call, a direct read of what's gone up is worth checking before the next report cycle catches up.