Sizing debt when concessions make occupancy misleading

Compare occupied units, effective rent, and sustainable collections.

5 min readFor u.S. multifamily owners and developers financing or refinancing $50 million-plus transactionsResearch accessed October 8, 2026

A nearly full apartment building can have weak income if free rent, unpaid balances or other concessions reduce collections. Physical occupancy answers how many apartments are occupied under a stated definition. It does not answer how much rent is earned or received, when cash arrives, or whether the terms used to fill the building can be sustained.

For an owner financing a lease-up or recently stabilized property, the useful analysis connects occupancy with lease economics and monthly cash. The OCC's multifamily discussion explicitly says to examine actual collections to determine economic occupancy, rather than rely on a rent roll's high physical occupancy.[1] That distinction should remain visible throughout the financing request.

Define the occupancy measures and denominator

Write down total units, rentable units, occupied units, signed future leases, unavailable apartments and any units excluded from a particular measure. A leased unit with a future start date and a currently occupied unit may be treated differently in an execution's requirements. Do not silently move between those categories in a lender presentation.

Economic occupancy also needs a definition. One useful owner analysis divides net residential rental revenue by the full potential residential rent for the same period and inventory. Other reports may use different denominators or account for loss-to-lease separately. State the exact calculation rather than present a percentage as universally comparable.

Freddie's appraisal chapter requires unit inventory and rent information and calls for analysis of concessions, discounts, abatements and forecast vacancy.[2] That is appraisal evidence for its mortgage process. The owner can use the same underlying lease records to explain why unit occupancy and income occupancy differ without claiming the appraisal rules dictate every lender's ratio.

Measure the full cost of filling apartments

For each lease cohort, record face rent, term, free months, move-in credit, recurring discount and other incentives. Show contractual gross rent and effective rent separately. A twelve-month lease at $2,300 with two free months produces $23,000 before other adjustments, or approximately $1,916.67 per month averaged over that lease term. The face rent remains $2,300; the cash economics are different.

Do not blend incentives with uncollectible rent. A resident's approved free month is different from a required payment that is overdue. The budget should distinguish both and avoid deducting an incentive twice when it is already reflected in net reported rent. Freddie's current appraisal requirements explicitly consider collection loss along with concessions.[2]

Freddie's explanatory rental-income guidance also warns against treating all units as immediately earning market rent and discusses actual leases and renewal behavior.[3] A recent lease-up with high face rents and large incentives needs that distinction. The relevant comparison with nearby properties is effective economics and timing, not simply the top rent printed on a listing.

Test a highly occupied building with substantial free rent

Consider an original hypothetical 500-unit building with 475 occupied apartments, each at $2,300 monthly rent. Physical occupancy is 95%. Assume for a simplified twelve-month forecast that those apartments remain occupied at that face rent and the remaining twenty-five units stay vacant. This deliberate fixed-inventory assumption isolates concessions rather than predicting actual turnover.

Gross occupied rent is $13.11 million. Suppose 300 of the occupied leases have two free months falling within this forecast period. Their concession cost is $1.38 million. After another $250,000 of separately assumed collection loss, net residential rent is $11.48 million.

Full potential residential rent for all 500 apartments at the same face rent is $13.8 million. Under the defined owner measure, economic occupancy is approximately 83.19%, materially below physical occupancy. This ratio does not establish a program eligibility result; it explains what the occupied apartments contribute to revenue under these assumptions.

Add $700,000 of supported other income and deduct $5.4 million of assumed recurring expense and replacement allowance. Accepted cash flow is $6.78 million. Without the concession deduction, the same simplified calculation would show $8.16 million. The building has not become less occupied; the forecast now recognizes the cost of the leases.

At an illustrative $80 million mortgage with a 7.2% annual debt constant, service is $5.76 million. Coverage is approximately 1.18 with concessions and 1.42 without them. At an assumed 1.30 sizing ratio, debt capacity is approximately $72.436 million with concessions versus $87.179 million without them. These rates and limits are illustrations, not quoted financing terms.

Figure 1
A 500-unit building: physical occupancy versus economic occupancy
Physical occupancy475 of 500 apartments occupied
95%
Economic occupancy$11.48 million net residential rent / $13.8 million full potential
83.19%
Two free months on 300 leases and assumed collection loss leave the occupied apartments contributing far less than the headline occupancy suggests. Hypothetical example from this guide, using the guide's defined owner measure. Approximate. Not a program eligibility result.
Figure 2
From $13.11 million of occupied face rent to $6.78 million of accepted cash flow
Gross occupied rent at $2,300
$13.11M
Two free months on 300 leases
−$1.38M
Assumed collection loss
−$0.25M
Net residential rent
$11.48M
Supported other income
+$0.7M
Recurring expense and replacement allowance
−$5.4M
Accepted cash flow
$6.78M
Without the concession deduction, the same calculation shows $8.16 million. The building is no less occupied; the forecast now recognizes the cost of the leases. Hypothetical example from this guide. Simplified twelve-month forecast with fixed inventory. Not a quote or offer.
Figure 3
Debt capacity at 1.30 times and a 7.2% constant, with and without concessions
Concessions recognizedConcessions ignored
Accepted cash flow
$6.78M
$8.16M
Debt capacity
$72.436M
$87.179M
On an illustrative $80 million mortgage, coverage is about 1.18 with concessions and 1.42 without them. Hypothetical example from this guide. Illustrative rates and limits, not quoted financing terms. Approximate amounts.

Put front-loaded incentives into the cash calendar

Annual averaging can conceal the month when the owner needs equity. Assume all $1.38 million of the example's free-rent cost occurs in the first quarter. Before collection loss for simplicity, first-quarter occupied rent is $3.2775 million less $1.38 million, or $1.8975 million. For this cash-timing example, assume the replacement allowance equals required cash reserve deposits, so the $5.4 million is also the combined annual cash use for operating expense and those deposits. Assume other income, those cash uses and debt service occur evenly through the year.

The quarter then has $175,000 of other income, $1.35 million of operating expenses and reserve deposits, and $1.44 million of debt service. Its cash deficit is $717,500 before the example's separate collection loss and any additional capital uses. The full-year accepted cash flow exceeds annual debt service by $1.02 million, yet cash timing still demands interim liquidity.

Identify whether an interest reserve, operating deficit reserve or sponsor contribution covers the low point under the actual structure. An expected positive year-end balance does not pay a bill due during the first quarter. Keep the debt capacity calculation and the monthly funding requirement as separate outputs.

Figure 4
First-quarter cash when all free rent falls in that quarter
Occupied rent after $1.38 million of free rent
$1,897,500
Other income
+$175,000
Operating expenses and reserve deposits
−$1,350,000
Debt service
−$1,440,000
First-quarter cash deficit
−$717,500
Full-year cash flow exceeds annual debt service by $1.02 million, yet the first quarter still needs interim liquidity. Hypothetical example from this guide. Before collection loss and other capital uses; other income, cash uses and debt service assumed even through the year.

Respect execution-specific stabilization gates

Fannie's Near-Stabilization term sheet sets specified occupancy and certificate-of-occupancy conditions and requires a path to qualifying coverage within its stated stabilization framework.[4] Freddie's Lease-Up sheet separately distinguishes occupancy, leased units, certificates and coverage at particular stages.[5] Those named executions do not use physical occupancy as a substitute for every other condition.

The owner should therefore request a precise list of tests at rate lock, funding, stabilization and release of credit support. Meeting a unit-count condition early does not demonstrate accepted net cash flow. Large incentives may help reach an occupancy gate while delaying the economic performance needed for a later gate.

Freddie's Lease-Up structure includes conditions for releasing credit enhancement and consequences if required stabilization is not achieved.[5] A budget should not assume support becomes available for distribution merely because the property reaches a favorable occupancy headline. Model the specific performance test and evidence period in the applicable agreement.

Demonstrate whether incentives can roll off

Build a lease-expiration schedule showing which concessions end, which residents are likely to renew and what effective terms are supported by recent leasing. Removal of free rent at renewal is a forecast, not an existing receipt. It can also affect retention and turnover cost; model those effects together.

Freddie's appraisal chapter requires a supported explanation when forecast vacancy differs from current vacancy and considers seasonality and market competition.[2] Evidence can include signed renewal economics, new leases without incentives, competing supply and collection performance. A statement that incentives are “temporary” is insufficient if the market continues to require them.

Produce a financing package with physical inventory, effective lease revenue, concession cohorts, collection evidence, monthly cash and execution-specific milestones. Ownership can then decide whether to borrow less, retain more liquidity, allow additional operating history or choose a different financing path. High occupancy remains useful information, but sustainable income and timely cash determine what the property can carry.

Sources

  1. Office of the Comptroller of the Currency, Comptroller’s Handbook: Commercial Real Estate Lending, version 2.0, income-generating capacity, printed page 42, and Multifamily, printed pages 122–123. Accessed October 8, 2026. ↩

  2. Freddie Mac Multifamily, Seller/Servicer Guide Chapter 60, August 25, 2026 revision, sections 60.6, 60.14(c) and 60.17, rent roll, income approach and rental factors. Accessed October 8, 2026. ↩ ↩2 ↩3

  3. Freddie Mac Multifamily, Modeling Multifamily Potential Rental Income, June 2022, actual leases and supported rental forecasts; explanatory guidance checked against current Chapter 60. Accessed October 8, 2026. ↩

  4. Fannie Mae, Near-Stabilization Execution Term Sheet, occupancy, certificates of occupancy and stabilization conditions. Accessed October 8, 2026. ↩

  5. Freddie Mac Multifamily, Optigo Lease-Up Loan, September 2025, occupancy, funding and stabilization conditions. Accessed October 8, 2026. ↩ ↩2

General information for U.S. multifamily owners and developers, not legal, tax, or investment advice. Examples use hypothetical figures. Program terms change; check the cited sources and your own loan documents. CapMatch is not a lender.

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