Proven mnemonics — built specifically for the real estate licensing exam.
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4 Elements of Value
DUST
Demand · Utility · Scarcity · Transferability
All 4 elements must be present for a property to have value
DUST is foundational to real estate valuation — if any one element is missing, value cannot exist. A property in a flood zone may have Utility and Transferability but lack Demand. An oil field may have Demand and Scarcity but lack Transferability if it can't be sold. All four must work together.
D
Demand — desire and ability to purchase at a given price
U
Utility — usefulness, the ability to satisfy a need or desire
S
Scarcity — limited supply relative to demand
T
Transferability — ability to convey ownership to another party
Forces Influencing Value
PEPS
Physical/environmental · Economic · Political (governmental) · Social
4 external forces that influence real estate value
Real estate value doesn't exist in a vacuum — PEPS reminds you that four external forces are always at work. A great property in a bad location (Physical), during a recession (Economic), in a high-tax area (Political), or in a declining neighborhood (Social) will suffer in value regardless of its condition.
P
Physical and environmental — location, topography, climate, natural features
E
Economic — employment, income levels, interest rates, market trends
P
Political (governmental) — zoning, taxes, building codes, regulations
S
Social — population trends, lifestyle preferences, community standards
Fixed and variable operating expenses of real estate investment
TIMMUR covers all the operating expenses you subtract from gross income to get Net Operating Income (NOI). Remember: mortgage payments are NOT an operating expense — they are a financing cost. NOI = Gross Income minus Vacancy minus TIMMUR expenses.
T
Taxes — property taxes (fixed expense)
I
Insurance — property and liability insurance (fixed)
M
Management — property management fees (variable)
M
Maintenance — repairs and upkeep (variable)
U
Utilities — if landlord pays (variable)
R
Reserves — replacement reserves for major systems (fixed)
Three Approaches to Value
Three appraisal approaches: COSI — Cost, Sales comparison (Market), Income
Three Approaches to Value
Every licensed appraiser uses one or more of these three methods
Cost approach: what would it cost to rebuild minus depreciation plus land value. Used for unique properties, new construction, special purpose buildings. Sales comparison (market) approach: compare to recent sales of similar properties — most common for residential. Income approach: value based on income generated — used for investment properties.
C
Cost approach — rebuild cost minus depreciation
S
Sales comparison — compare to recent sales
I
Income approach — based on income generated
CMA vs Appraisal
CMA: Comparative Market Analysis — not a formal appraisal but used to set listing price
CMA vs Appraisal
Two different valuations — and who does each
CMA: done by a real estate agent, not a licensed appraiser. Uses recent sales, active listings, and expired listings of similar properties. Used to help sellers set a realistic listing price or buyers make competitive offers. Formal appraisal: done by licensed appraiser, required by lenders, legally defensible.
Physical deterioration: wear and tear, deferred maintenance — can be curable (paint) or incurable (foundation). Functional obsolescence: outdated features (one bathroom in a 4-bedroom home, outdated floor plan) — can be curable or incurable. Economic/external obsolescence: outside the property (new highway nearby, plant closure) — always incurable.
Physical
Wear and tear — curable or incurable
Functional
Outdated features — curable or incurable
Economic
External factors — always incurable
Capitalization Rate
Cap rate = NOI ÷ Value. Higher cap rate = higher risk/return. Lower cap rate = lower risk.
Capitalization Rate
The key formula for valuing income-producing properties
Cap rate (Capitalization rate) = Net Operating Income ÷ Property Value. Rearrange: Value = NOI ÷ Cap rate. If NOI = $50,000 and cap rate = 5%, Value = $1,000,000. Higher cap rate: riskier investment or lower-quality area. Lower cap rate: safer investment or premium location.
Net Operating Income
NOI = Gross income - Vacancy - Operating expenses (NOT including mortgage payments)
Net Operating Income
What NOI includes and what it deliberately excludes
Gross potential income (all units full) minus Vacancy and credit loss minus Operating expenses (taxes, insurance, maintenance, management, utilities) = NOI. DOES NOT include mortgage payments (debt service) — NOI is used before financing to compare properties on equal footing.
A quick and simple income property comparison tool
GRM = Sales price ÷ Gross monthly rent (or annual). To find value: Value = GRM × Monthly rent. Less accurate than cap rate because it ignores expenses and vacancy. Used as a quick screening tool. Example: property sells for $300,000, rents for $2,000/month → GRM = 150.
Principle of Substitution
Principle of substitution: a buyer won't pay more than the cost of an equally desirable alternative
Principle of Substitution
The foundation of the sales comparison approach
A rational buyer will not pay more for a property than the cost of acquiring a comparable substitute. This principle underlies the sales comparison approach. Sets the ceiling on value. Related: principle of contribution (a feature is worth what it adds to the whole, not what it costs).
Highest and Best Use
Highest and best use: legal, physically possible, financially feasible, maximally productive
Highest and Best Use
Four tests a use must pass to be considered highest and best use
Appraisers must determine the highest and best use of a site — the use that produces the highest value. Must be: Legally permissible (zoning), Physically possible (soil, size, shape), Financially feasible (demand exists), Maximally productive (produces highest return). May differ from current use.
L
Legally permissible
P
Physically possible
F
Financially feasible
M
Maximally productive
Market Value vs Price
Market value vs Market price: value = what it's WORTH. Price = what it SOLD for.
Market Value vs Price
A distinction appraisers make carefully
Market value: the most probable price a property would sell for in a competitive, open market with informed buyers and sellers and no unusual pressures. Market price: what it actually sold for — may be above or below market value. Cost: what was spent to build it. All three can be different.
Reconciliation
Reconciliation: appraiser weighs all three approaches and gives final value opinion
Reconciliation
The final step in the appraisal process
Appraiser doesn't average the three approaches — they weight each based on reliability for that property type. For a single-family home: sales comparison usually weighted most heavily. For an apartment building: income approach. For a special-use property: cost approach. Final value is a single point estimate.
Appraisal vs Assessment
Appraisal vs Assessment: appraisal for market value. Assessment for property tax purposes.
Appraisal vs Assessment
Two different valuations — often confused on the exam
Appraisal: professional opinion of market value, usually for mortgage lending. Done by licensed appraiser. Assessment: value placed on property by county assessor for property tax purposes. Often different from market value. Assessment ratio: assessed value ÷ market value. Ad valorem tax: based on property value.
Plottage and Assemblage
Plottage: combining multiple parcels increases total value beyond sum of parts
Plottage and Assemblage
How combining properties creates extra value
Assemblage: the process of combining two or more adjacent parcels into one larger parcel. Plottage: the increase in value that results from assemblage. Example: three 50×100 lots worth $100,000 each → combined 150×100 lot worth $400,000 (plottage value = $100,000). Developer can build something not possible on individual lots.
🏡 Valuation
COSI — Cost, Sales, Income
Three Appraisal Approaches
The three ways an appraiser determines property value
Every appraisal question uses one of these three approaches. COSI helps you remember all three and when each is used.
C
Cost Approach — land value + rebuild cost minus depreciation. Best for new/unique properties.
S
Sales Comparison — compares to recent similar sales (comps). Best for homes.
I
Income Approach — NOI ÷ Cap Rate. Best for investment properties.
🏡 Valuation
PFE — "Please Fix Everything"
Three Types of Depreciation
Depreciation reduces value — three types tested on every exam
"Please Fix Everything" — that's what depreciation means for a property.
P
Physical — wear and tear, aging. Usually curable.
F
Functional — outdated features. May be curable or incurable.
E
Economic — outside factors (airport, bad neighborhood). Always incurable.
🏡 Valuation
Substitution: "Why pay more?"
Principle of Substitution
The foundation of the sales comparison approach
A buyer won't pay more than the cost of an equally desirable substitute. This is why comps work. The principle of substitution drives the entire sales comparison approach.
🏡 Valuation
CBS — Comparable Better, Subtract
Sales Comparison Adjustments
The #1 mistake on sales comparison questions
Comp BETTER than subject → SUBTRACT from comp. Comp WORSE than subject → ADD to comp. Always adjusting the comparable to match the subject property.
Comparative Market Analysis
CMA — Comps + Adjustments = Subject Property Value
The agent's tool for estimating list price using recent comparable sales
In a CMA, adjust the comps — not the subject. Better comp feature: subtract. Inferior: add.
CMA uses recently sold comparable properties (comps) to estimate a subject property's value. Select comps: similar size, age, location, condition — ideally within 1 mile and 6 months. Adjustments: comp has better feature than subject → subtract from comp's price (you're paying for what you have, not what the comp has). Comp is inferior → add to comp's price. Example: comp sold $300,000 with 3-car garage; subject has 2-car → subtract $10,000 → adjusted value $290,000. CMA is an opinion of value, not an appraisal.
SIC — Sales comparison, Income, Cost — three approaches to value
Three appraisal methods — each best suited to different property types
Appraisers use all three approaches then reconcile — but weight toward most appropriate method
Sales Comparison (Market) Approach: compare subject to recent sales of similar properties with adjustments — best for residential. Income Approach: value based on income the property generates (NOI ÷ Cap Rate) — best for investment/commercial property. Cost Approach: land value + cost to reproduce building - depreciation — best for special-use properties (schools, churches) with no comparable sales or income. Highest and best use: before any appraisal, must determine the legal, physically possible, financially feasible use that produces highest value.
Sales comparison
Best for residential — adjustments to comparable sales
Income
Best for investment — NOI ÷ Cap Rate = value
Cost
Best for special use — land + building cost - depreciation
Three types of depreciation appraisers identify in the cost approach
Appraisal depreciation is loss in value — not the tax depreciation schedule
Physical deterioration: wear and tear from age and use. Curable: cost to fix is less than value added (deferred maintenance). Incurable: too expensive to fix relative to value gain. Functional obsolescence: property feature that is outdated or poorly designed (8-track player, awkward floor plan). Curable: can be fixed economically. Incurable: cannot. External (economic) obsolescence: caused by factors OUTSIDE the property — always incurable (busy highway next door, nearby industrial plant). This is the only type caused by external forces.
Physical
Wear and tear — may be curable (deferred maintenance)
Economic principles that underlie real estate value — tested heavily on licensing exams
These principles explain why property values change — each one is a likely exam question
Conformity: value maximized when properties are similar to surrounding properties. Anticipation: value reflects expected future benefits. Supply and demand: price rises when supply falls or demand increases. Highest and best use: use that produces maximum value. Progression: lower-value property benefits from proximity to higher-value properties. Regression: opposite — higher-value property hurt by proximity to lower-value. Substitution: no one pays more than the cost of an equally desirable substitute (basis of all three appraisal approaches). Contribution: value of a component equals what its absence would cost the whole.
Substitution
Basis of all appraisal — no one overpays for a substitute
Progression
Modest home benefits from expensive neighborhood
Regression
Expensive home dragged down by modest neighborhood
Cost Approach Walkthrough
Land + Reproduction Cost − Depreciation = Value
Step-by-step cost approach calculation — the only approach that separates land from building
Land is never depreciated — only the improvements lose value over time
Step 1: Estimate land value as if vacant (sales comparison of similar vacant lots). Step 2: Estimate reproduction or replacement cost of the building new. Reproduction: exact replica. Replacement: same utility with current materials. Step 3: Estimate total depreciation (physical + functional + external). Step 4: Value = Land + (Replacement Cost − Depreciation). Example: Land $80,000. Building replacement cost $300,000. Depreciation: physical $30,000 + functional $10,000 + external $0 = $40,000. Building value = $260,000. Total value = $340,000. Most reliable for new construction and special-use properties.
Land
Always valued separately — never depreciated
Reproduction vs replacement
Exact copy vs same utility with today's materials
All three depreciation
Physical + functional + external — sum them all
Age-Life Depreciation Method
% Depreciated = Effective Age ÷ Economic Life × 100
The most common method for calculating depreciation in the cost approach
Effective age reflects condition — a well-maintained 20-year-old building may have an effective age of only 10
Chronological age: actual years since built. Effective age: age the building appears to be based on condition and maintenance — can be more or less than chronological age. Economic life: total useful life of the building (typically 40-60 years for residential). Remaining economic life: economic life minus effective age. Depreciation %: Effective Age ÷ Economic Life. Example: 20-year-old building with 60-year economic life → 20/60 = 33.3% depreciated. If replacement cost is $300,000: depreciation = $100,000. Building value = $200,000. Key exam point: use EFFECTIVE age, not chronological age.
Effective age
How old it acts — condition and maintenance matter
Economic life
Total useful life — typically 40-60 years residential
Formula
Effective Age ÷ Economic Life = depreciation %
Plottage and Assemblage
Assemblage = combining lots. Plottage = the value increase from combining.
How combining adjacent parcels creates more value than the sum of the individual parts
1 + 1 = 3 in real estate — two small lots combined are worth more than either alone
Assemblage: the process of combining two or more adjacent parcels into one larger parcel under single ownership. Plottage: the increase in value that results from assemblage — the combined parcel is worth more than the sum of individual parcels. Why: larger parcel enables higher and better use, more development potential, more attractive to developers. Example: Two lots each worth $100,000 = $200,000 combined. After assemblage, combined lot may be worth $260,000. Plottage value = $60,000. Common in urban development and land banking. Opposite of subdivision (splitting one parcel into smaller lots).
Assemblage
The act of combining — buying and merging adjacent lots
Plottage
The value increase — whole greater than sum of parts
Why higher value
Larger parcel allows higher and better use
Gross Income Multiplier
GIM = Sale Price ÷ Gross Annual Income (includes ALL income, not just rent)
A broader income multiplier that includes all property income, not just rent
GIM vs GRM: GRM uses rent only. GIM uses all income including parking, laundry, storage.
Gross Income Multiplier (GIM): Sale Price ÷ Gross Annual Income (all income sources). Gross Rent Multiplier (GRM): Sale Price ÷ Gross Annual RENT (rent only). For properties where all income = rent, GIM = GRM. For mixed-use or properties with additional income streams, GIM is more accurate. Both ignore vacancy and expenses — quick screening tool only. To value: GIM × subject property's gross annual income = estimated value. Derive GIM from comparable sales: find GIM for 3+ comps, average them, apply to subject.
GIM
All income — rent + parking + laundry + storage
GRM
Rent only — simpler, common for residential rentals
Both ignore
Vacancy and expenses — quick estimate only
Paired Sales Analysis
Find two sales identical EXCEPT for one feature → the price difference = that feature's value
The technique appraisers use to support individual adjustment amounts
Appraisers must support each dollar adjustment — paired sales give the market evidence
Paired sales analysis (matched pairs): to quantify the value of a specific feature, find two comparable sales that are identical in every way except for that one feature. The price difference between the two sales represents the market's value of that feature. Example: Find Sale A (pool) at $320,000 and Sale B (no pool) at $300,000, all else equal → pool adjustment = $20,000. Appraisers use multiple paired sets and average to get reliable adjustments. Important: the more similar the paired sales, the more reliable the adjustment. This is the market evidence appraisers cite when adjustments are challenged.
Identical except one
Two sales — only the feature being measured differs
Price difference
Market's value of that feature — use multiple pairs
Purpose
Supports adjustment amounts with market evidence
Market Value vs Market Price vs Cost
Value = what it SHOULD sell for. Price = what it DID sell for. Cost = what it cost to build.
Three distinct concepts that are often confused but mean very different things
An appraiser estimates market VALUE — not cost and not necessarily what the seller wants
Market value: the most probable price a property would sell for in an arm's length transaction with informed, willing, unpressured buyer and seller, given adequate market exposure. This is what appraisers estimate. Market price: the actual price a property sold for in a specific transaction — may differ from value if buyer or seller was under duress, uninformed, or related parties. Cost: the amount spent to build or acquire the property — may be more or less than value. Example: overbuilt property cost $500,000 to build but market value is only $380,000 (functional obsolescence). Cost ≠ Value.
Market value
What it should sell for — appraiser's opinion
Market price
What it actually sold for — a fact, may not equal value
Cost
What it cost to build — never assume equals value
🎓 Common Exam Questions
Q: Explain the three approaches to value and when each is most appropriate.
A: Sales Comparison Approach: compares subject property to recent sales of similar properties with dollar adjustments for differences. Best for: residential properties where many comparable sales exist. Process: select 3+ comps within 1 mile and 6 months, make adjustments (comp better than subject = subtract; comp worse = add), reconcile adjusted values. Income Approach: Value = NOI ÷ Cap Rate. Best for: income-producing properties (apartments, commercial). Requires knowing market cap rates and the property's net operating income. Cost Approach: Value = Land Value + Reproduction/Replacement Cost of Improvements - Depreciation. Best for: special-use properties (churches, schools, government buildings), new construction, insurance purposes. All three approaches are used and then reconciled — the appraiser weights the most relevant approach most heavily.
Q: How do adjustments work in the sales comparison approach?
A: Adjustments compensate for differences between the comparable sale and the subject property. Key rule: you always adjust the COMP to make it equal the subject — never adjust the subject. If the comp has a feature the subject lacks (comp is better): subtract the value of that feature from the comp's price. If the comp lacks a feature the subject has (comp is worse): add the value to the comp's price. Example: Comp sold for $300,000 with a pool (worth $20,000 in this market); subject has no pool → Subtract $20,000 → Adjusted comp = $280,000. Comp sold $290,000 with only 2 bedrooms; subject has 3 → bedroom worth $15,000 → Add $15,000 → Adjusted comp = $305,000. Adjustments should be supported by paired sales (find two sales identical except for the feature being measured).
Q: What is highest and best use and why is it fundamental to appraisal?
A: Highest and best use (HBU): the reasonably probable use of a property that is (1) legally permissible — allowed by zoning and deed restrictions; (2) physically possible — soil, size, shape allow the use; (3) financially feasible — the use generates enough income; (4) maximally productive — produces the highest property value. HBU must be determined separately for land as if vacant AND for the property as improved (these may differ, especially if existing improvements are not the best use). If HBU of land as vacant differs from HBU of improved property, the building may have negative value (cost to demolish subtracted). HBU drives all three appraisal approaches — an appraiser who misidentifies HBU will produce an inaccurate value opinion.
Q: What is the capitalization rate and how is it derived?
A: Cap Rate = NOI ÷ Value (or Price). It represents the return on investment assuming no financing. Derived from market: compare NOI to sale prices of similar investment properties that have sold. Example: if three similar apartment buildings sold at cap rates of 6.2%, 6.5%, and 6.0%, the market cap rate is approximately 6.25%. To value a property: Value = NOI ÷ Cap Rate. Example: subject generates $75,000 NOI, market cap rate is 6.25% → Value = $75,000 ÷ 0.0625 = $1,200,000. Inverse relationship: rising cap rates mean falling values (same NOI, higher rate = lower value). Cap rates rise when risk increases or interest rates rise. Primary markets (NYC, SF): lower cap rates (4-5%). Secondary markets: higher cap rates (6-8%). Tertiary/rural: 8-12%+.
Q: How is depreciation estimated in the cost approach?
A: Depreciation in the cost approach = loss in value from any cause. Three types: Physical deterioration (most common): wear and tear. Curable physical: deferred maintenance worth fixing (paint, roof, HVAC) — cost equals value added. Incurable physical: structural issues too expensive to fix relative to value gain. Functional obsolescence: outdated or poor design features. Curable functional: adding what buyers expect (no garage in a neighborhood where all homes have them). Incurable functional: overdevelopment (largest house on block — excess building costs not recovered). External (economic) obsolescence: caused by factors outside the property — always incurable. Examples: flight path, industrial odor, declining neighborhood. Age-life method: (Effective Age ÷ Economic Life) × Replacement Cost. A 30-year-old building with a 60-year economic life = 50% depreciated.