Guides
What Is Absorption in Real Estate? Apartment Demand Explained
Short answer: A plain-English explainer of absorption, lease-up, concessions and occupancy, with current U.S. apartment figures. Absorption is the net number of units (or square feet) that become occupied during a period: move-ins minus move-outs. Sources: [1] [2]
What is absorption?
Absorption is the net number of units (or square feet) that become occupied during a period: move-ins minus move-outs. It measures demand.
What is lease-up?
Lease-up is the period after a new building delivers in which it fills toward stabilized occupancy, often using concessions.
What is a concession?
A concession is a rent discount, such as free weeks or months, offered to attract or retain renters. Effective rent subtracts concessions from asking rent.
How is absorption trending now?
RealPage reports about 304,800 units absorbed in the year to Q3 2026, versus about 318,000 completions, a gap of ~13,000 units, the narrowest since late 2015.
Frequently asked questions
What does absorption mean in real estate?
Absorption is the net number of units (or square feet) that become occupied during a period: move-ins minus move-outs. It measures demand.
What is a lease-up?
Lease-up is the period after a new building delivers in which it fills toward stabilized occupancy, often using concessions.
What is a concession in apartment leasing?
A concession is a rent discount, such as free weeks or months, offered to attract or retain renters. Effective rent subtracts concessions from asking rent.
Is apartment absorption rising or falling?
RealPage reports about 304,800 units absorbed in the year to Q3 2026, versus about 318,000 completions, a gap of ~13,000 units, the narrowest since late 2015.
Where do these figures come from?
Every figure is attributed in the text and linked in the numbered Sources list (2 sources, with publication dates where available). Vendor figures are labeled vendor-reported.