Direct Answer
REIT occupancy rate is the percentage of a REIT's leasable square footage or units that are currently leased and generating rent, the inverse of the vacancy rate. Occupancy trends are a key operating metric for REITs because rental revenue depends directly on how much of the portfolio is leased: rising occupancy generally supports revenue growth, while declining occupancy signals weakening demand or increased competition in a REIT's markets.
Occupancy is one piece of REIT analysis. For how it fits alongside FFO, AFFO, NOI, cap rate, and the broader choice between direct property, public REITs, and real-estate funds, see Swoopr's Real Estate & REIT Investing hub.
Key Takeaways
- Occupancy and vacancy are two sides of the same figure. They always sum to 100%, so a rising occupancy trend and a falling vacancy trend describe the identical underlying change in leasing demand.
- Revenue is the link. Because rent is generally paid on leased space, occupancy moves feed fairly directly into rental revenue, which is why analysts track the trend quarter over quarter rather than a single reading.
- Direction matters more than a single number. Rising occupancy generally supports revenue growth; declining occupancy can signal weaker tenant demand or more competing supply in a REIT's markets.
- Disclosed in SEC filings and supplementals. REITs report occupancy in their 10-K and 10-Q filings and typically break it out further by property type, market, and same-store portfolio in investor supplemental packages.
- Not directly comparable across property types. An office portfolio, an apartment portfolio, and an industrial (warehouse) portfolio face different tenant demand dynamics, so occupancy levels are generally compared within a property type rather than across sectors.
- Occupancy alone doesn't capture rent economics. A REIT can hold high occupancy while renewing leases at flat rents, so occupancy is typically read alongside rent growth and net operating income, not in isolation.
How Occupancy Rate Is Calculated
Occupancy rate is the percentage of a REIT's leasable square footage or units that are currently leased and generating rent. The calculation compares the portion of the portfolio under lease to the portfolio's total leasable capacity:
Occupancy Rate = Occupied Leasable Area (or Units) ÷ Total Leasable Area (or Units) × 100
Because occupancy and vacancy describe the same portfolio from opposite sides, the two figures always sum to 100%, and occupancy can equivalently be expressed as:
Occupancy Rate = 100% − Vacancy Rate
The unit of measurement depends on the property type. Office, retail, and industrial REITs generally measure occupancy in leasable square footage, since tenants lease space of varying sizes. Residential (apartment) REITs generally measure occupancy as a percentage of total units, since apartments are more uniform in structure. Hotel REITs commonly report a related but distinct figure, the occupancy rate of available room-nights, which functions similarly but is not identical to the leased-space definition used for office, retail, industrial, and residential portfolios.
REITs commonly report occupancy for the total portfolio as well as for the "same-store" subset, properties owned and stabilized for a comparable period in both the current and prior year. Same-store occupancy strips out the effect of newly acquired or newly developed properties, which often lease up gradually and would otherwise distort a period-over-period comparison of an otherwise stable portfolio.
Worked Example: Reading an Occupancy Trend
Hypothetical example, for education only.
- Starting portfolio: A REIT owns properties with 10,000,000 total leasable square feet. At the end of Q1, 9,150,000 square feet are leased and generating rent.
- Calculate Q1 occupancy: 9,150,000 ÷ 10,000,000 × 100 = 91.5% occupancy (and 8.5% vacancy, since 100% − 91.5% = 8.5%).
- Following quarter: With the same 10,000,000 square foot portfolio, leased space rises to 9,300,000 square feet by the end of Q2.
- Calculate Q2 occupancy: 9,300,000 ÷ 10,000,000 × 100 = 93.0% occupancy, a 1.5 percentage point increase from Q1, reflecting 150,000 additional square feet leased.
- Connect to revenue: If the portfolio's average annualized rent is $28 per square foot, the incremental 150,000 leased square feet represents roughly $4.2 million in additional annualized rental revenue (150,000 × $28 = $4,200,000), before accounting for any changes in rent on the space that was already leased.
- Read the trend, not just the level: The rise from 91.5% to 93.0% is the meaningful signal, it indicates strengthening demand for space in this REIT's markets over the quarter, which is the kind of trend analysts weigh alongside rent growth when assessing a REIT's operating momentum.
Limitations and Common Mistakes
Occupancy is a snapshot, not a measure of rent economics
A portfolio can be highly occupied while renewing leases at flat or below-market rents, which limits revenue growth even though the occupancy figure looks strong. Occupancy is best read together with rent growth (often disclosed as leasing spreads on new and renewal leases) and same-store net operating income, not as a standalone indicator of financial performance.
"Leased" and "occupied" are not always the same figure
Some REITs distinguish a leased percentage (space under signed lease, including leases signed but not yet commenced) from an occupied or "commenced" percentage (space where the tenant has actually moved in and begun paying rent). The gap between the two can matter, particularly for large, complex leases with long buildout periods before rent commences.
Property type comparisons are generally not meaningful
Office, retail, industrial, residential, and hotel portfolios face different tenant demand dynamics, lease durations, and turnover patterns, so an occupancy level that would be considered strong for one property type is not automatically comparable to another. Occupancy is most useful when compared within a property type and against a REIT's own historical trend or direct peers.
Portfolio changes can distort period-over-period comparisons
Acquisitions, dispositions, and newly delivered development properties change the composition of the leasable base being measured. A newly developed property typically leases up gradually from a low starting occupancy, which can pull down total-portfolio occupancy even while the REIT's existing, stabilized properties are performing well. This is why REITs report same-store occupancy alongside total-portfolio occupancy.
A single quarter's reading is less informative than the trend
Occupancy can move for reasons unrelated to underlying demand, including the timing of a single large lease expiration or renewal. Analysts generally look at several consecutive quarters of same-store occupancy, alongside vacancy and leasing spread data, before drawing conclusions about whether demand in a REIT's markets is strengthening or weakening.
FAQ
What is REIT occupancy rate?
REIT occupancy rate is the percentage of a REIT's leasable square footage or units that are currently leased and generating rent. It is the inverse of the vacancy rate, a portfolio that is 92% occupied is 8% vacant. Because rental revenue depends directly on how much of a portfolio is leased, occupancy is one of the core operating metrics REIT investors and analysts track alongside funds from operations (FFO) and same-store net operating income.
How is REIT occupancy rate calculated?
Occupancy rate is calculated as occupied leasable square footage (or occupied units) divided by total leasable square footage (or total units), expressed as a percentage. The same relationship can be expressed through vacancy: occupancy rate equals 100% minus the vacancy rate. REITs disclose the inputs needed for this calculation in their quarterly 10-Q filings and investor supplemental packages, typically broken out by property type and often by individual property.
What is the difference between occupancy rate and vacancy rate?
Occupancy rate and vacancy rate are two ways of describing the same underlying split of a REIT's leasable space: occupancy measures the leased, rent-generating share, while vacancy measures the unleased share. They always sum to 100%. Rising occupancy and falling vacancy describe the same trend, strengthening demand for space in a REIT's markets, while declining occupancy and rising vacancy describe weakening demand or increased competition.
Where can investors find a REIT's occupancy data?
REITs generally disclose occupancy in their quarterly 10-Q and annual 10-K filings with the SEC, as well as in investor supplemental packages and earnings presentations that often break the figure out by property type, market, and same-store portfolio. SEC EDGAR (sec.gov/edgar) is the primary source for these filings. Industry data and methodology background are also available from Nareit, the trade association for the REIT industry.
Why can occupancy rate be misleading on its own?
Occupancy rate is a snapshot of how much space is leased, not how profitably it is leased. A portfolio can hold high occupancy while renewing leases at flat or below-market rents, which limits revenue growth even though the occupancy figure looks strong. Occupancy is also not directly comparable across property types with different demand dynamics, and period-over-period comparisons can be distorted by acquisitions or dispositions that change the underlying portfolio. Analysts generally view occupancy alongside rent growth and same-store net operating income rather than in isolation.
What is economic occupancy and how does it differ from physical occupancy?
Physical occupancy counts space that a tenant is using. Economic occupancy compares the rent actually being collected against the rent the space would produce if fully leased at market terms. Free rent periods, concessions, and tenants who have stopped paying create a gap between the two. A portfolio can show high physical occupancy while economic occupancy lags because incentives given to win leases have not yet burned off. Both figures are useful, and the difference between them is often more informative than either alone.
Why does a lease expiration schedule matter alongside current occupancy?
Current occupancy is a snapshot, while the expiration schedule shows how much of the portfolio comes up for renewal in each future year. A REIT at high occupancy with a large block of leases expiring into a weak leasing market faces different risk from one with the same occupancy and long staggered terms. REITs publish this schedule in their supplemental package, usually as square footage and expiring rent by year, and it is where refinancing-style rollover risk for leases becomes visible.
What does a tenant retention rate add to an occupancy figure?
Retention rate measures the share of expiring leases that renew rather than vacate. High occupancy sustained by low retention means the leasing team is constantly backfilling space, which carries downtime, broker commissions, and tenant improvement spending that occupancy alone does not show. High occupancy paired with high retention implies the same result achieved at lower cost. Reading the two together separates a portfolio holding its tenants from one running hard to stay level.
How is occupancy measured differently for hotel REITs?
Hotel rooms are re-let nightly rather than under multi-year leases, so hotel REITs report occupancy as the share of available room nights sold in a period, alongside average daily rate and revenue per available room. Occupancy on its own can rise simply because rates were cut, which is why the three figures are read together. That structure also makes hotel results far more sensitive to short-term demand than the lease-based occupancy of an office, industrial, or retail portfolio.
References
Disclaimer
This article is for educational and informational purposes only and does not constitute personalized investment, financial, or legal advice. Occupancy definitions, disclosure practices, and reporting conventions can vary between REITs and property types. Always verify current figures from a company's own SEC filings and investor materials. Trading involves risk, including the possible loss of principal.