Absorption

Absorption measures how quickly available real estate is leased or sold over a given period. It is the demand side of a market: net absorption is the change in occupied space, counting new move-ins minus space given back (move-outs and newly vacated units). For a developer, it answers the question that decides whether a project works - how fast will this fill up or sell out?

The usual metric is the absorption rate. For sales, divide the number of properties sold in a period by the total available: if 50 condos out of 200 sell in a quarter, the quarterly absorption rate is 25%, implying the remaining units would clear in roughly four quarters at that pace. For leasing, absorption is often quoted in square feet per month or per year.

Absorption drives the pro forma behind a ground-up deal. A developer projects how many units lease up each month to model when a building reaches stabilized occupancy and starts covering its costs. That schedule determines how long a construction loan must carry interest before a refinance or sale, and slow absorption directly erodes developer equity, because carrying costs mount while income lags.

A worked example: a 120-unit apartment building expects to lease 15 units a month. At that rate it reaches 90% occupancy in about seven months. If real absorption comes in at 8 units a month, stabilization slips past a year - longer interest payments, thinner returns.

Absorption also reads the broader market. Strong, rising absorption signals demand that can support new supply and firmer pricing - the same conditions that lift comparable sales and compress a market's cap rate. Weak absorption warns of oversupply. Figures are market- and date-specific, so treat any absorption rate as a snapshot of its moment.

Source: CBRE and JLL market reports, as of 2026.