What Is Absorption in Commercial Real Estate? (No Fluff Explanation)

Most people hear "absorption" and assume it's some vague vibe about a market feeling "hot" or "cold."

It's not a vibe. It's math.

And it's one of the clearest signals in commercial real estate for whether a market is actually tightening or quietly falling apart.

The Short Answer

Absorption measures how much space got leased versus how much got vacated, over a set period.

That's it.

Net Absorption = Space Leased – Space Vacated

If more space got leased than vacated, the market is tightening. If more got vacated than leased, it's loosening, no matter what the headlines say about "recovery."

Do the Math

Say an office submarket looks like this in a quarter:

• 200,000 sq ft leased
• 50,000 sq ft vacated
• Net absorption: 150,000 sq ft

Positive. Demand is outpacing what's being given back. That's a tightening market.

Flip it:

• 50,000 sq ft leased
• 200,000 sq ft vacated
• Net absorption: -150,000 sq ft

Negative. Tenants are leaving faster than new ones are showing up. Doesn't matter how nice the lobby is.

Gross Absorption Isn't the Same Thing, and It Will Lie to You

Gross absorption only counts what got leased. It ignores what got vacated.

A market can post huge gross absorption numbers and still be shrinking, if an equal or bigger chunk of space emptied out at the same time.

Net absorption is the number that actually matters. Gross absorption is the number that gets quoted in press releases because it sounds better.

What the Real Numbers Look Like Right Now

Office absorption went deeply negative in 2021, over 125 million square feet lost in a single quarter at the worst point. It's only recently turned positive again, and even then it's concentrated almost entirely in top-tier buildings. Older office space is still bleeding tenants.

Industrial tells a different story. Net absorption in that sector recently posted its strongest quarter since 2023, and almost all of that demand is going to newer, more modern facilities, not older warehouse stock.

Same market, same word, two completely different stories depending on which building class you're looking at.

Why This Matters More Than a "Vibe" Ever Will

A building in a market with strong positive absorption is riding demand. A building in a market with negative absorption is fighting headwinds no matter how good the property looks on a tour.

Absorption tells you which one you're actually standing in.

Recap

• Absorption = space leased minus space vacated over a period.
• Positive absorption = tightening market. Negative = loosening market.
• Gross absorption ignores vacancies and can be misleading. Net absorption is the real signal.
• Right now, absorption looks completely different by property class, top-tier office and modern industrial are absorbing strongly, older stock in both sectors is still losing ground.

Final Word

A market "feeling" strong means nothing.

A market absorbing space faster than it's losing it, that's the number that actually predicts where rents and values go next.

Check the absorption before you check the vibe.

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