Net absorption is the net change in occupied industrial square footage within a market over a given period, calculated as new space leased minus space vacated during that same period. Positive net absorption means demand is outpacing space coming back onto the market; negative net absorption means more space is being vacated than leased, signaling softening demand.
Net absorption vs gross absorption
| Metric | What it measures |
|---|---|
| Gross absorption | Total new leasing activity in a period, regardless of vacated space |
| Net absorption | New leasing activity minus space vacated — the true net demand change |
Why net absorption matters more than new leasing alone
Gross absorption headlines can be misleading — a market can show strong new leasing activity while simultaneously losing more space to vacated leases and closures, resulting in negative net absorption and a weakening market despite the busy leasing headlines.
Net absorption is typically tracked quarterly alongside vacancy rate and new supply deliveries, giving a fuller picture: rising net absorption with limited new supply tends to tighten vacancy and push rents up, while negative net absorption alongside heavy new supply deliveries can push vacancy up quickly.
What to watch for before committing
Net vs gross confusion
Confirm whether a reported absorption figure is net or gross — the two tell very different stories about real market demand.
Single-quarter noise
One large lease or move-out can swing a single quarter's net absorption significantly — look at trailing four-quarter trends for a clearer signal.
Submarket-level detail
Citywide net absorption can mask sharply different conditions in specific submarkets — drill down to your relevant geography.
Relationship to new supply
High positive net absorption alongside even higher new supply deliveries can still result in rising vacancy — check both figures together.
Building class breakdown
Class A absorption trends often diverge from Class B/C — match the data to the building class you're evaluating.
Speculative vs build-to-suit skew
Large build-to-suit deliveries can distort absorption figures since that space was effectively pre-leased before delivery — ask how the data source treats this.
When you need to know this
- Evaluating true market demand — distinguishing genuine growth from noisy headline leasing activity
- Site selection across markets — comparing underlying demand strength between candidate metro areas
- Investment underwriting — assessing whether a market's fundamentals support future rent growth
- Timing a lease decision — understanding whether tightening or loosening conditions favor acting sooner or waiting
Frequently asked questions
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