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Valuation topic guide

Income approach to real estate value

Income questions are a waterfall. Begin with full-income potential, recognize vacancy and collection loss, add other property income, subtract property operating expenses, and only then capitalize NOI.

What does this exam area cover?

Short answer: Know rent roll, contract and market rent, potential gross income, vacancy and collection loss, other income, effective gross income, fixed and variable expenses, replacement reserves, net operating income, debt service and accounting exclusions, direct capitalization, V = I ÷ R, cap-rate extraction, risk and cap rates, gross rent and gross income multipliers, before-tax cash flow, debt coverage, yield capitalization, discount rate, terminal capitalization rate, reversion, and sensitivity.

Official section
National III: Valuation
Broker weight
8% of the national broker portion
Expected scored items
Valuation accounts for about 8 of 100 items

The current national outline includes the income approach and related income, expense, and capitalization concepts. Exam problems usually state simplified annual figures. Actual valuation requires lease review, normalized operations, market-supported forecasts, and a rate appropriate to the property rights, risk, growth, and effective date.

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What is on the official outline?

Topic
Property and lease analysis
What to know
Property type, unit mix, rent roll, lease term, contract rent, market rent, concessions, renewal, expense recovery, net lease, percentage rent, options, tenant credit, rollover, occupancy, and stabilized operation
Best exam move
Determine whether the assignment needs current contract income, market income, or stabilized income.
Topic
Potential gross income
What to know
Full occupancy, full collection, base rent, market rent, contract rent, scheduled rent, vacant units at market, reimbursements, percentage rent, parking, laundry, storage, signage, and annualization
Best exam move
Build income at full potential before applying vacancy and collection loss.
Topic
Vacancy and collection loss
What to know
Physical vacancy, economic vacancy, bad debt, concessions, downtime, tenant turnover, credit loss, stabilized allowance, market vacancy, subject history, lease-up, and percentage application
Best exam move
Use a market-supported allowance even when the property happens to be fully occupied on one date.
Topic
Other income and EGI
What to know
Parking, laundry, storage, vending, antenna, pet fees, reimbursements, application fees where recurring, percentage rent, service revenue, exclusions, vacancy treatment, and effective gross income
Best exam move
EGI is the realistic collectible property income before operating expenses.
Topic
Operating expenses
What to know
Property tax, insurance, management, utilities, repairs, maintenance, payroll, landscaping, cleaning, security, legal, accounting, supplies, advertising, licenses, administrative cost, and normalized owner-provided services
Best exam move
Include expenses necessary to maintain property operations and income, even if the current owner performs work without charge.
Topic
Fixed, variable, and reserve items
What to know
Fixed expenses, property taxes, insurance, variable expenses, utilities, repairs, management, turnover, replacement reserve, roof, paving, equipment, short-lived components, timing, annual allowance, and problem convention
Best exam move
Follow the stated reserve convention and keep capital additions separate from recurring operations.
Topic
NOI exclusions
What to know
Mortgage principal, mortgage interest, debt service, owner income tax, accounting depreciation, capital gain, entity overhead, personal expense, income distribution, capital expenditure, and tenant business expense
Best exam move
NOI measures property performance before owner-specific financing and income tax.
Topic
Direct capitalization
What to know
One stabilized year's NOI, overall capitalization rate, value, income, rate, annual period, consistency, going-in cap rate, market extraction, comparable sales, risk, growth expectations, liquidity, condition, and property rights
Best exam move
Match the NOI definition and period to the capitalization rate.
Topic
Capitalization-rate behavior
What to know
Perceived risk, required return, income stability, growth, tenant credit, lease term, location, condition, financing market, liquidity, inflation, supply, demand, and inverse value relationship
Best exam move
With NOI fixed, cap rate and value move in opposite directions.
Topic
GRM and GIM
What to know
Monthly rent, annual rent, potential gross income, effective gross income, sale price, comparable multiplier, subject application, expense similarity, vacancy similarity, quick screening, and limitations
Best exam move
Use the same rent period and income definition for comparable and subject.
Topic
Investor cash-flow measures
What to know
NOI, annual debt service, before-tax cash flow, debt-service-coverage ratio, equity dividend, cash-on-cash return, capital expenditure, tax effects, principal reduction, and property value distinction
Best exam move
Do not substitute an investor's cash flow after financing for property NOI.
Topic
Yield capitalization
What to know
Holding period, annual cash flow, rent growth, expense growth, vacancy, capital expenditure, discount rate, present value, terminal or exit cap rate, reversion, sale cost, scenario, and sensitivity
Best exam move
Direct capitalization uses one stabilized year; discounted cash flow values multiple timed benefits.

Which distinctions produce the most mistakes?

Terms
Contract rent vs. market rent
Difference
Contract rent is stated in an existing lease. Market rent is what the property rights could command in the market as of the effective date.
Question cue
Signed lease amount versus current market amount.
Terms
PGI vs. EGI
Difference
PGI assumes full occupancy and collection. EGI reflects vacancy and collection loss plus qualifying other income.
Question cue
Full potential versus realistic collectible income.
Terms
EGI vs. NOI
Difference
EGI is income before operating expenses. NOI is EGI after allowable property operating expenses.
Question cue
Revenue line versus property operating profit.
Terms
Operating expense vs. debt service
Difference
Operating expense supports property operation. Debt service pays owner-specific financing.
Question cue
Property performance versus capital structure.
Terms
Replacement reserve vs. capital expenditure
Difference
A reserve is an annualized allowance for future short-lived replacements in some analysis conventions. A capital expenditure is an actual major outlay, often modeled separately.
Question cue
Annual allowance versus cash spent.
Terms
Capitalization rate vs. discount rate
Difference
A cap rate converts one year's income into value and includes return on and of capital concepts. A discount rate converts future cash flows to present value.
Question cue
Single stabilized year versus timed multiyear cash flows.
Terms
Cap rate vs. GRM
Difference
Cap rate uses NOI after operating expenses. GRM uses gross rent before explicit expense deduction.
Question cue
Net income ratio versus gross-income multiplier.
Terms
Going-in vs. terminal cap rate
Difference
The going-in rate relates current acquisition value to first-year or stabilized NOI. The terminal rate estimates resale value from income near the end of a holding period.
Question cue
Acquisition year versus reversion year.
Terms
NOI vs. before-tax cash flow
Difference
NOI is before debt service. Before-tax cash flow is generally NOI minus debt service and other stated below-line items.
Question cue
Property return versus leveraged equity cash.

How should you solve an income-approach question?

  1. Identify the property rights, income period, rent basis, occupancy assumption, and whether figures are current, market, or stabilized.
  2. Calculate potential gross income at full occupancy and collection.
  3. Subtract vacancy and collection loss, then add qualifying other income to reach effective gross income.
  4. Subtract allowable operating expenses and the problem's stated reserve treatment to reach NOI.
  5. Exclude mortgage debt service, income taxes, and accounting depreciation from NOI.
  6. Apply the matching method: V = I ÷ R for direct capitalization or gross income times a supported multiplier.
  7. Check units, annual versus monthly periods, rate as decimal, rounding, and whether the result moves logically with risk and income.
Step
Potential gross income
Relationship
Full income potential
Exam anchor
Before vacancy
Step
Effective gross income
Relationship
PGI - vacancy loss + other income
Exam anchor
Collectible revenue
Step
Net operating income
Relationship
EGI - operating expenses
Exam anchor
Before debt and income tax
Step
Value
Relationship
NOI ÷ capitalization rate
Exam anchor
Direct capitalization
Step
Capitalization rate
Relationship
NOI ÷ value
Exam anchor
Income-to-price ratio
Step
GRM value
Relationship
Gross rent × market GRM
Exam anchor
Keep rent periods consistent

How do the rules work in scenarios?

Build NOI

Scenario: Annual PGI is $300,000, vacancy and collection loss is 6%, other income is $12,000, and operating expenses are $118,000.

  1. Vacancy and collection loss is $300,000 × 6% = $18,000.
  2. EGI is $300,000 - $18,000 + $12,000 = $294,000.
  3. NOI is $294,000 - $118,000 = $176,000.

Answer: The property's annual NOI is $176,000.

Direct capitalization

Scenario: A stabilized property produces $168,000 in annual NOI. Comparable investments support an 8% overall capitalization rate.

  1. Use V = I ÷ R.
  2. Convert 8% to 0.08.
  3. $168,000 ÷ 0.08 = $2,100,000.

Answer: The direct-capitalization indication is $2,100,000.

Find the cap rate

Scenario: A comparable sold for $1,600,000 and had verified stabilized NOI of $120,000.

  1. Use R = I ÷ V.
  2. $120,000 ÷ $1,600,000 = 0.075.
  3. Convert the decimal to 7.5%.

Answer: The extracted overall capitalization rate is 7.5%.

Gross rent multiplier

Scenario: Comparable small rentals support a monthly GRM of 145. The subject's market monthly rent is $2,400.

  1. Both the multiplier and subject use monthly rent.
  2. Multiply $2,400 × 145.
  3. The result is $348,000.

Answer: The GRM indication is $348,000.

What are the common exam traps?

Trap
PGI already reflects normal vacancy.
Correction
PGI is full potential; vacancy and collection loss lead toward EGI.
Trap
An occupied building gets a zero vacancy allowance.
Correction
Stabilized analysis can use market vacancy despite current full occupancy.
Trap
Mortgage payment is an operating expense.
Correction
Debt service is owner financing and comes after NOI.
Trap
Accounting depreciation is deducted to calculate appraisal NOI.
Correction
It is a noncash accounting or tax item, not a property operating expense.
Trap
Owner self-management means no management expense.
Correction
Normalize the expense necessary for property operation.
Trap
NOI and cash flow after debt are the same.
Correction
Debt service is subtracted after NOI to reach leveraged cash flow.
Trap
Higher cap rate produces higher value at the same NOI.
Correction
Value falls when the divisor rises.
Trap
GRM and cap rate use the same income.
Correction
GRM uses gross rent; cap rate uses NOI.
Trap
A monthly GRM can be applied to annual rent.
Correction
The rent period must match the comparable multiplier.
Trap
Direct capitalization forecasts every annual cash flow separately.
Correction
That is yield capitalization or discounted cash flow, not one-year direct capitalization.

Can you answer these original practice questions?

These questions are original study items aligned to the published outline. They are not copied, recalled, or predicted PSI questions.

1. Which amount assumes full occupancy and collection before vacancy loss?

  1. NOI
  2. Potential gross income
  3. Before-tax cash flow
  4. Debt service
Show answer and explanation

Answer: B

Potential gross income represents full-income potential before vacancy and collection loss.

2. Which item is excluded from property NOI?

  1. Property tax
  2. Management expense
  3. Mortgage debt service
  4. Routine maintenance
Show answer and explanation

Answer: C

Debt service depends on owner financing and is below NOI.

3. NOI is $90,000 and the cap rate is 6%. What is value?

  1. $5,400
  2. $540,000
  3. $1,500,000
  4. $15,000,000
Show answer and explanation

Answer: C

$90,000 ÷ 0.06 = $1,500,000.

4. If NOI stays constant and the capitalization rate rises, what happens to value?

  1. Value rises
  2. Value falls
  3. Value is unchanged
  4. NOI becomes PGI
Show answer and explanation

Answer: B

A larger divisor produces a lower value.

5. Which method explicitly discounts several future cash flows and a reversion?

  1. Gross rent multiplier
  2. Yield capitalization
  3. Cost approach
  4. Paired sales
Show answer and explanation

Answer: B

Yield capitalization, often a discounted cash flow model, values timed future benefits.

How should you study this area?

Session
1. Rent and property
Focus
Contract, market, rent roll, lease term, concessions, recovery, percentage rent, occupancy, rollover, and stabilization
Proof you are ready
Normalize six rent rolls and explain every change.
Session
2. Income waterfall
Focus
PGI, vacancy, collection, other income, EGI, operating expenses, reserves, and NOI
Proof you are ready
Build ten NOI statements without skipping a line.
Session
3. Expenses
Focus
Fixed, variable, management, replacement reserve, capital expenditure, debt service, tax, depreciation, and normalization
Proof you are ready
Sort twenty items above or below NOI.
Session
4. Direct capitalization
Focus
Value, income, rate, cap extraction, risk, growth, property rights, consistency, decimal conversion, and sensitivity
Proof you are ready
Solve fifteen I-R-V problems.
Session
5. Multipliers and investor metrics
Focus
GRM, GIM, monthly, annual, expense similarity, before-tax cash flow, debt coverage, and cash-on-cash
Proof you are ready
Match every numerator and denominator correctly.
Session
6. Yield capitalization
Focus
Holding period, forecast, discount rate, terminal cap, reversion, sale cost, present value, scenario, and sensitivity
Proof you are ready
Score at least 90% and distinguish cap rate from discount rate.

Do not count recognition as mastery. Close the notes and explain the rule, apply it to a new fact pattern, and identify why each distractor fails.

Income Approach to Real Estate Value FAQ

What is the income approach to value?

It converts the anticipated economic benefits of owning an income-producing property into a value indication. Direct capitalization converts one stabilized year's net operating income, while yield capitalization analyzes multiple future cash flows and a reversion.

What is potential gross income?

Potential gross income is the income a property could produce at full occupancy and full collection under the selected market or contract-rent assumptions, plus any included income before vacancy and collection loss.

How do you calculate effective gross income?

A common sequence is potential gross income minus vacancy and collection loss plus qualifying other income. Read the problem carefully because some questions already include other income within potential gross income.

What is net operating income?

NOI is effective gross income minus allowable operating expenses and any reserve treatment specified by the problem. It is calculated before mortgage debt service, income taxes, and accounting depreciation.

What is the direct capitalization formula?

Value equals net operating income divided by the overall capitalization rate: V = I ÷ R. The same relationship gives I = V × R and R = I ÷ V.

Does a higher capitalization rate mean a higher value?

For the same NOI, a higher capitalization rate produces a lower value because the income is divided by a larger required return. Higher perceived risk commonly supports a higher cap rate, all else equal.

Is mortgage debt service an operating expense?

No. Debt service depends on the owner's financing rather than property operations. It is subtracted after NOI when calculating before-tax cash flow, not when developing property-level NOI.

What is the difference between GRM and a capitalization rate?

A gross rent multiplier uses gross rent and does not explicitly deduct expenses. A capitalization rate converts NOI, which is after operating expenses. They are not interchangeable.

When is the income approach most useful?

It is most relevant when market participants buy property for income, such as apartments, offices, retail, industrial, and other investment property. It is less central when income is not a primary buyer motivation.

Are these questions copied from PSI?

No. Every practice item is original and aligned to the public valuation outline.

Primary sources

The current official outline controls the tested scope. Statutes, regulations, and official agency materials control when a general study rule and a jurisdiction-specific rule differ.