12.3 Operating Expenses and Reserves

Expenses Complete the Path to NOI

After EGI is established, the income approach deducts operating expenses to reach net operating income. ECO VI.c Expenses lists three buckets you must know by name:

1. Fixed expenses
2. Variable expenses
3. Replacement allowance / reserves / capital expenditures

NOI (standard teaching form):

NOI = EGI − Operating expenses
(Reserves may be included in OE or handled as a separate policy—consistency with how the cap rate was extracted is essential.)

What Counts as an Operating Expense?

Operating expenses are the periodic costs of maintaining and operating the real property so it can produce rental (or operator) income. They are expenses a typical buyer would expect to incur under the assumed lease structure and management, not every cash outflow the current owner records.

Fixed vs Variable Expenses

Why the exam cares: When vacancy increases, EGI falls but fixed OE stay. NOI is squeezed from the top. Variable OE may decline, partially offsetting. Stems sometimes ask which expense is fixed or how NOI moves if occupancy drops.

Worked Example 1 — Fixed vs Variable Impact

EGI at 95% occupancy: $500,000
Fixed OE: $120,000
Variable OE: 20% of EGI = $100,000
Total OE: $220,000
NOI: $280,000

If EGI falls to $450,000 (higher vacancy) and variable OE remain 20% of EGI:

NOI fell $40,000 on a $50,000 EGI drop because fixed costs did not shrink.

Worked Example 2 — Management Fee as Variable

Management at 4% of EGI:
EGI $600,000 → management = $24,000
EGI $550,000 → management = $22,000

Do not freeze management at last year’s dollar amount if the reconstructed EGI changed substantially—unless the stem gives a fixed contract amount.

Common Operating Expense Line Items (Multifamily / Commercial Teaching Set)

Expense ratio:
OE ratio = Total OE ÷ EGI
Example: OE $210,000; EGI $500,000 → ratio = 42%. Compare to market benchmarks for the property type (apartments often differ from NNN industrial).

Replacement Allowance / Reserves / Capital Expenditures

Building components do not all last as long as the structure. Roofs, HVAC, carpeting, appliances, parking surfaces, and elevators require periodic replacement. Appraisers address this with a replacement allowance (also called reserves for replacement).

Conceptual calculation

Annual reserve ≈ Cost to replace component ÷ Useful life (years)
(Sometimes adjusted for interest/sinking fund; many exam problems use straight-line allowance.)

Worked Example 3 — Simple reserve schedule

Reserves vs capital expenditures (CapEx)

Exam trap: Owner spent $120,000 replacing the roof this year and listed it under repairs. For stabilized OE, you typically remove the abnormal roof project from annual repairs and instead use a normalized roof reserve (or note the roof is new and reserves decrease). Putting $120,000 into every year’s OE understates stabilized NOI.

Cap rate consistency

If comparable sales’ extracted cap rates were based on NOI after reserves, deduct reserves on the subject. If market cap rates are quoted on NOI before reserves, do not deduct reserves unless you adjust the rate. Match the income level to the rate level.

What Is NOT an Operating Expense (Critical List)

These items appear on owner books and tax returns but are excluded from appraisal OE when developing NOI for real property capitalization:

| Item | Why it is not OE for NOI | |---|---|---| | Debt service (interest + principal) | Financing cost; depends on owner’s loan—not a property operating cost in standard NOI | | Depreciation (accounting / tax) | Non-cash book allocation; not a cash operating expense; physical wear is handled via reserves, CapEx, or the cap rate—not IRS depreciation | | Income taxes (owner’s personal or entity income tax) | Owner-specific; after NOI in investment analysis | | Capital improvements (as full expensing of long-lived upgrades) | Capital items; normalize via reserves or separate CapEx—not ordinary repairs | | Mortgage insurance, loan fees, points | Financing | | Business expenses of a non-realty trade | May belong to going-concern valuation, not pure real estate NOI | | Owner’s personal expenses charged to the building (personal auto, travel unrelated to ops) | Non-operating; remove in reconstruction | | Leasing commissions / TI (sometimes) | Often capital or below-NOI / DCF items depending on convention—follow stem; not unlimited “repairs” |

Worked Example 4 — Stripping non-OE items

Owner’s annual “expenses” total $310,000, including:

Reconstructed OE sketch:
Taxes $45k + insurance $12k + utilities $28k + repairs ($95k − $80k) $15k + management $20k + roof reserve $4k = $124,000 (illustration).
The owner’s $310,000 was never appraisal OE.

Lease Structure and Who Shows Up in OE

Reimbursed expenses: Still list the expense if the landlord pays it; list matching reimbursement income (Section 12.1). Net effect on NOI may be near zero when 100% recovered, but vacancy can leave unrecovered portions of “recoverable” expenses.

Worked Example 5 — Unrecovered expenses

• Recoverable expenses (taxes, insurance, CAM): $100,000
• Occupancy such that tenants reimburse only 90% → reimbursement income $90,000
• Unrecovered $10,000 reduces NOI (expense still $100,000 if landlord paid it all)

Market OE vs Owner’s Actual OE

Reconstruction replaces non-market items with market-typical expenses:

• Owner self-manages and charges $0 management → impute market management fee
• Owner defers maintenance → expenses may be understated; normalize
• Related-party insurance or payroll above market → adjust down
• Below-market taxes due to temporary abatement → consider stabilization when abatement ends (stem-driven)

Per-Unit and Per-SF Expense Tests

Example: 80 units; reconstructed OE $360,000 → $4,500/unit. If market comps run $4,000–$4,800/unit, the subject is plausible. If $7,500/unit without a story, recheck capital items left in repairs.

Replacement Allowance vs Depreciation vs Cap Rate (Do Not Triple Count)

Do not deduct full accounting depreciation and aggressive reserves and an inflated cap rate for the same roof without thinking—the exam rewards clean, consistent structure.

Common Exam Traps — Expenses

• Deducting debt service before NOI
• Deducting income tax or book depreciation as OE
• Expensing a one-time capital improvement as annual OE
• Forgetting to impute management when owner lists none
• Treating all utilities as landlord OE under NNN leases
• Mixing reserve policy with cap rates extracted on a different NOI definition
• Calling ground rent an operating expense when the assignment values the leased fee of the improvements only differently—read rights carefully; ground rent is often an expense to the leasehold improvement position

Formula Card

1. NOI = EGI − OE (including reserves if that is your NOI definition)
2. OE ratio = OE / EGI
3. Annual reserve ≈ Replace cost / life
4. Variable OE often scale with EGI or occupancy; fixed OE do not
5. Exclude: debt service, accounting depreciation, owner income taxes, personal non-property costs

Bridge

You can classify expenses and strip financing and tax artifacts from the books. Section 12.4 puts income sources + vacancy + expenses together in the full reconstructed operating statement—the arithmetic backbone of ECO income items and direct capitalization.