How to Calculate Recoverable CAM Expenses After Exclusions
The step-by-step process for identifying excluded operating expenses, removing them from the recoverable pool, and documenting the exclusion audit trail.
Operating expense exclusions are categories of costs that commercial leases explicitly prohibit landlords from recovering through CAM charges — regardless of whether those costs are actually incurred in running the building. The most common non-recoverable categories in institutional leases are: capital expenditures and improvements, depreciation and amortization, mortgage interest and debt service, leasing commissions and tenant improvement allowances, management fees above a stated cap, and above-market executive compensation. Excluding these costs from the CAM pool before billing is the first adjustment in any annual reconciliation. Landlords who include CapEx or depreciation in the recoverable pool — whether by mistake or intentionally — are passing through costs tenants have no contractual obligation to pay, which is one of the most common causes of CAM overbilling disputes.
Formula
Recoverable Expenses = Total Gross Expenses − Excluded Items
Variables
| Name | Symbol | Definition | Example |
|---|---|---|---|
| Total Gross Expenses | TGE | All actual operating costs recorded in the property's GL accounts for the reconciliation period, before any lease-required exclusions are applied. This is the starting point for every reconciliation. | $1,500,000 total gross expenses from GL for calendar year 2025 |
| Capital Expenditure Exclusions | CapEx | Expenditures that extend the useful life of a building component, replace a major system, or constitute an improvement beyond the original standard. These are capital in nature and are excluded from operating expense recovery. Common examples: roof replacement, HVAC replacement, elevator modernization, major parking lot reconstruction. | $150,000 in capital expenditures (roof membrane replacement $100K, elevator cab renovation $50K) |
| Management Fee Overage | MFO | The portion of the property management fee that exceeds the cap specified in the lease. Most leases cap management fee recovery at 3–5% of gross revenues or a fixed dollar amount. Any management fee above the cap must be excluded. | $45,000 management fee overage (actual fee $195K; lease cap is 3% of $5M gross revenues = $150K) |
| Depreciation and Amortization | D&A | Non-cash accounting charges for the depreciation of building systems and amortization of deferred costs. These are excluded from virtually all commercial leases as they do not represent actual operating cash expenditures. | $30,000 depreciation recorded in the GL for property systems |
| Other Excluded Items | OEI | All other lease-defined exclusions, which may include: mortgage interest and principal payments, leasing commissions, tenant improvement costs, executive salaries above market, legal fees for tenant disputes, fines and penalties, and any costs that benefit only specific tenants. | $25,000 other exclusions (leasing commissions $15K, litigation costs $10K) |
Step-by-Step Process (4 steps)
Compile the Full List of Excluded Categories Per Lease
Read the operating expense exclusion list in each tenant's lease. Create a standardized exclusion checklist for the property that covers all exclusions across all leases (using the most tenant-favorable definition where leases conflict). Update this list when leases are renewed or amended. Common universal exclusions that appear in virtually all institutional leases: CapEx, depreciation, mortgage debt service, leasing costs, management fee above cap, ground rent, owner's income taxes.
Example:
Exclusion checklist: (1) CapEx and improvements, (2) depreciation/amortization, (3) management fee above 3% gross revenues, (4) leasing commissions and TI, (5) mortgage interest, (6) litigation costs not related to property operations, (7) executive salaries above $X, (8) income and profit taxes.
Match Exclusions to GL Accounts
For each exclusion category, identify the specific GL accounts that contain excluded expenses. Work with the property accountant to tag GL accounts as 'excluded' or 'recoverable' in the property management system. Flag any accounts that may contain both recoverable and excluded charges (e.g., a repairs and maintenance account that also captured a major HVAC replacement — the CapEx portion must be separated from the routine maintenance portion).
Example:
GL 5600 (Capital Projects): Fully excluded. GL 5700 (Depreciation): Fully excluded. GL 5100 (Management Fee): Partially excluded — $150K recoverable, $45K excluded. GL 5800 (Legal): Excluded to extent related to tenant disputes.
Remove Exclusions from the Pool Total
Subtract all excluded amounts from the total gross expenses to arrive at the recoverable pool. Maintain a detailed exclusion schedule showing each excluded amount, the GL account it came from, and the lease provision requiring its exclusion. This schedule is the first document requested in any tenant audit.
Recoverable Pool = TGE − CapEx − D&A − MFO − OEI
Example:
$1,500,000 − $150,000 (CapEx) − $45,000 (mgmt overage) − $30,000 (depreciation) − $25,000 (other) = $1,250,000 recoverable pool.
Document the Exclusion Audit Trail
For each excluded amount, create a workpaper that shows: the GL account name and number, the total amount in that account, the excluded portion, the recoverable portion, and the specific lease section requiring the exclusion. This documentation is essential for defending the reconciliation in a tenant audit. Retain for at least as long as tenants have audit rights under their leases (typically 3 years after statement delivery).
Example:
Exclusion workpaper line: 'GL 5600 Capital Projects — Total $150,000. Excluded: $150,000 (100%). Recoverable: $0. Lease Section 7.4(b)(i): Capital expenditures excluded from Operating Expenses.'
Worked Example
Scenario
Office building, full-year 2025 reconciliation. Total gross operating expenses: $1,500,000. Tenant has 10,000 SF in 100,000 SF building (10% share). Lease excludes: CapEx, depreciation, management fee above 3% of gross revenues ($5M gross revenues), and leasing-related costs.
Inputs
| Variable | Value |
|---|---|
| Total Gross Expenses (GL) | $1,500,000 |
| Capital Expenditures (roof replacement, HVAC) | $150,000 |
| Management Fee (actual) | $195,000 |
| Management Fee Cap (3% × $5M) | $150,000 |
| Management Fee Overage (excluded) | $45,000 |
| Depreciation | $30,000 |
| Leasing Commissions + TI Allowances | $25,000 |
Calculation
Exclusions: - CapEx: $150,000 - Management fee overage: $45,000 - Depreciation: $30,000 - Leasing costs: $25,000 Total excluded: $250,000 Recoverable pool: $1,500,000 − $250,000 = $1,250,000 Tenant share: $1,250,000 × 10% = $125,000
Result:
Recoverable pool: $1,250,000 (vs. $1,500,000 gross). Tenant's share: $125,000 ($12.50/SF). If exclusions had not been applied, tenant would have been billed $150,000 ($15.00/SF) — an overbilling of $25,000 or 20%.
Common Mistakes
Including the full cost of a capital repair in the operating expense pool rather than separating the routine maintenance component (recoverable) from the capital component (excluded).
Recovering the full property management fee without checking for the lease-specified cap — management fee caps are frequently overlooked in reconciliations.
Not excluding depreciation on building systems because it appears in the property's accounting records — non-cash charges are excluded regardless of how they appear in the GL.
Including tenant improvement allowances paid to other tenants in the common area expense pool — TI allowances are a direct cost of a specific lease and are never a recoverable operating expense.
Treating fines and penalties as recoverable operating expenses — costs arising from the landlord's own regulatory violations are excluded in virtually all institutional leases.
Not maintaining a consistent year-over-year exclusion methodology, which creates unexplained fluctuations in the recoverable pool that trigger tenant audit requests.
When to Use This Calculation
- As the first step in every annual CAM reconciliation, before applying gross-up, caps, or proration.
- When auditing a CAM statement received from a landlord, to verify that all required exclusions were removed from the pool.
- When setting up the GL account structure for a new property, to tag accounts as recoverable or excluded based on the most restrictive lease language.
- When conducting a CAM audit on behalf of a tenant, to compare the landlord's exclusion schedule against the lease's exclusion list and identify any amounts that should have been excluded.
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