How fast new units / sqft get leased in a submarket.
Absorption rate measures the speed at which new rental units (or commercial square footage) get leased in a given submarket. Positive absorption means demand is consuming inventory; negative absorption means inventory is being vacated faster than it's being leased. Absorption is the standard supply-demand balance metric in commercial real estate.
Absorption tells you whether demand is keeping up with supply. Positive net absorption means more space got leased than vacated — demand is strong, vacancy declining, rents rising. Negative net absorption means more space vacated than leased — supply exceeds demand, vacancy rising, rent pressure to the downside. The absolute level matters but the trend matters more.
On multifamily, absorption is typically measured in units. A submarket might absorb 2,500 units annually in a healthy market — meaning 2,500 net new tenants signed leases vs. previous tenants vacating. Compare that to the supply pipeline: if 3,500 new units are delivering in the next 12 months, the submarket faces near-term oversupply pressure. If only 800 are delivering, the submarket should see rent growth and vacancy compression.
On commercial (office, industrial, retail), absorption is measured in square feet. The office market has been a dramatic example since 2020: many top metros showed negative absorption for multiple years as remote work eliminated office demand faster than companies vacated space. Industrial has been the opposite — explosive positive absorption from 2018–2022 as e-commerce demand surged.
For investors, absorption is the leading indicator of rent and vacancy direction. A submarket with consistent positive absorption above current supply pipeline is set up for rent growth and vacancy compression. A submarket with negative absorption or absorption below supply is set up for the opposite. Absorption trends should inform pro forma rent growth assumptions and timing of acquisition vs. disposition.
| Submarket: Suburban Chicago Class B | |
| Trailing 12-month new leases | 4,200 units |
| Trailing 12-month vacated | 3,650 units |
| Net absorption | +550 units |
| Total submarket inventory | 42,000 units |
| Absorption rate (% of inventory) | 1.3% |
| Submarket pipeline (next 12 mo) | 1,800 units delivering |
| Net new supply vs absorption | +1,250 units (potential oversupply) |
The speed at which new rental units or commercial square footage get leased in a submarket. Net absorption = new leases minus vacancies over a period.
Positive absorption of 1–3% of total inventory annually is healthy. Above 3% indicates strong demand and rent growth pressure. Negative absorption signals demand weakness.
CoStar, RealPage, and brokerage quarterly reports (CBRE, JLL, Cushman & Wakefield, Marcus & Millichap) publish submarket-level absorption data for multifamily, office, industrial, and retail.
Vacancy is a point-in-time level (X% of units are empty right now). Absorption is a change over a period (Y units net moved from vacant to leased over the past year). Absorption is the rate; vacancy is the level.
Compare submarket absorption to upcoming supply pipeline. Strong positive absorption with thin pipeline = rent growth assumptions supported. Negative absorption with heavy pipeline = should discount pro forma rent growth and be cautious on lease-up timelines.
Matrix incorporates submarket absorption and pipeline analysis into our underwriting — so loan structures reflect market direction.
