Understanding and Measuring Market Value: The Direct Comparison Approach

Learning Objectives and Core Concepts

Theory of Direct Comparison Methodology: Understanding and explaining the underlying mechanisms of the direct comparison approach.
Economic Principles: Applying the approach to its foundational economic principles, such as the Principle of Substitution.
Units of Comparison: Identifying and applying specific units of comparison relevant to residential valuations (e.g., price per square meter, number of bedrooms).
Fundamental Premise: Land has no intrinsic value; its value is creates by how the land is used.

The S.E.P.P. Framework: Drivers of Market Value

Property reflects variable forces that drive house prices up or down. These forces often work in tandem rather than in isolation:

Social (Anthropological/Population Characteristics): * Population growth and demographic trends (e.g., aging populations, ethnic shifts). * Attitudes toward education, work practices, security, and lifestyle/health. * Family composition and size.
Economic (Confidence and Activity): * Employment rates and wage growth (noting that wage growth can be "sticky"). * Interest rates and monetary supply (measurable risk). * Construction costs and overall building activity. * General business activity levels.
Political (Legal and Policy Frameworks): * Planning codes and zoning instruments. * Taxation (e.g., land tax, capital gains tax). * Foreign investment regulations. * Environmental legislation (e.g., management of toxic materials). * Infrastructure planning and monetary incentives (e.g., First Home Buyers Grant, stamp duty exemptions).
Physical (Natural and Man-Made Environment): * Climate, soil quality, and topography. * Transport linkages and natural barriers. * Characteristics of the surrounding area (proximity to schools, parks, and employment centers). * Technological availability (e.g., National Broadband Network - NBN). * Environmental impacts like climate change and increasing areas of inundation.

Property Market Classification and Urban Form

Property markets are defined by zoning determined by planning instruments. The five main markets are:

Residential
Commercial (e.g., CBD offices, multi-occupier office suites).
Retail (e.g., Shopping centers, strip shops like Chapel St Prahran, bulky goods).
Industrial (e.g., Warehousing, manufacturing, local mechanics).
Rural (e.g., Viticulture, grazing, cropping, fish farming).

Residential Sub-Markets and Urban Geography

In the Melbourne context, the market follows a typical urban form:

Central City (CBD)
Inner/Middle Suburbs: Roughly within $20\,km$ of the inner city.
Middle/Outer Suburbia
Rule of Proximity: Land value typically declines as the distance from the CBD increases.
Dwelling Types: Detached houses, units, terrace houses, townhouses, and apartments.

The Three Dimensions of Property Value

Property is considered a "3-dimensional" market where each dimension influences the final price:

Geographic Location: Some locations offer superior amenity, aesthetics, or functionality.
Price Brackets (Economic Perspective): Socio-economic strata respond differently to economic shifts, creating pricing layers based on wealth groups.
Building Characteristics: Size, architectural style, quality, and uniqueness. Architecturally designed houses are typically valued higher than mass-produced project homes.

Market Dynamics and Conceptual Models

Demand-Side Factors

Interest rates.
Economic growth.
Number of households.
Availability of mortgages.
Affordability of housing.
Speculative demand.

Supply-Side Factors

Supply of existing housing (numbers selling).
New builds/construction activity.

The Market Construct Model (S T U Curve)

Curve AB: The Seller's subjective concept of value.
Curve XY: The Buyer's subjective concept of value.
Point S: The point of minimum benefit to either party for a transaction to occur.
The Selling Zone (Colored Area): Where the market exists. The buyer or seller can adjust expectations to agree on a price via negotiation.
Point T: Indicates where a seller might lower expectations due to perceiving a declining market.
Point U: Indicates where a buyer might increase their price if alternative options provide lesser utility.

Market Signals and the Property Clock

Factors Impacting Market Peaks

Policy Factors: Interest rates and credit availability. Tightening of credit signals a potential peak.
Market Factors: Concerns over housing affordability and generational impacts.
Economic Factors: Labor market conditions; declining employment rates and "sticky" wage growth intended to reduce inflation.

Indicators of a Market Correction

Slowdown in house price growth rates.
Rise in advertised stock levels.
Weakening auction clearance rates.
Longer Days on Market (TOM).
Larger vendor discounting (price reductions to secure sales).
External shocks (e.g., GFC, Pandemics).

The Property Clock Stages

12 (Boom): Rapidly rising prices.
3 (Slump): Falling prices, lower sales volumes, falling construction.
6 (Contraction/Stagnation): Harder to obtain finance, stagnating or falling rents.
9 (Recovery): Rising yields, undersupply, falling interest rates.

Legal Definitions and Types of Value

The Spencer Case (1908) Definition

Value is defining as: "The estimated amount for which an asset or liability should exchange on the valuation date between a willing buyer and a willing seller in an arm’s length transaction, after proper marketing and where the parties had each acted knowledgeably, prudently and without compulsion."

International Valuation Standards (IVS 2013)

Adopted by the API and RICS in 2014, Market Value is the most probable selling price assuming "normal" sale conditions and typical market participants.

Other Specific Value Types

Investment Value: Value to a specific individual investor.
Transaction Price: The actual price paid for a specific property.
Insurance Value: Replacement or Reinstatement cost, including demolition and professional fees.
Accounting/Fair Value: Under International Financial Reporting Standards ( $IFRS\,13$ ).
Retrospective Value: For Capital Gains Tax purposes.
"As is" vs. "As if complete": Also known as To Be Erected (TBE).

Valuation Theory: The Direct Comparison Approach

Valuation is the process of deriving a market estimate by analyzing similar properties and comparing them to the subject property.

The Principle of Substitution

This states: "The value of a given property should be no more than the cost of buying another substitute property."

Factors for Adjustment

Because real estate is heterogeneous (unique), comparable sales must be adjusted for differences in:

Legal Characteristics: Title restrictions, zoning, development permits.
Physical Characteristics: Size, age, condition, floor plan, number of bedrooms/bathrooms, fit-out (kitchen, laundry), and external features (garages, pools, gardens).
Locational Characteristics: Proximity to school, shops, transport, and specific views (e.g., ocean views).
Economic/Market Conditions: Sale date and market trends (growth vs. downturn).

Systematic Rule for Adjustments

If the comparable sale is Superior to the subject property: Subtract from the sale price of the comparable.
If the comparable sale is Inferior to the subject property: Add to the sale price of the comparable.
Reliability: The best market indicator is typically the one requiring the lowest total variance in adjustments.

Highest and Best Use (HBU)

Valuation must consider the HBU, which is defined by four criteria:

Physically Possible: Is it technically feasible to build on the site (e.g., slope, size)?
Legally Permissible: Do regulations and zoning allow the use? Is it currently illegal? Can restrictions be changed?
Financially Feasible: Does the potential investment reward overcome the technical costs?
Most Profitable: Which use yields the highest residual value to the land?

Capitalization Concepts

Over-capitalization: Developing a property above the "ceiling" of the local market (e.g., adding a tennis court in a first-homebuyer neighborhood).
Under-capitalization: improvements that do not maximize the underlying land value (e.g., a small old house on a large plot in a prestigious suburb zoned for apartments).

Numerical Example: Sales Comparison Adjustment

Subject Property Profile

Land Area: $895\,m^2$
House Area: $161\,m^2$
Bedrooms/Bathrooms: $4\,Bed/2\,Bath$
Features: Ducted heating, Air conditioning, $2$ car lock-up, Good condition, No views.

Determination of Adjustment Units

Bedroom Allowance: * $Sale\,3\, (5\,beds) = \$545,000$ * $Sale\,1\, (4\,beds) = \$520,000$ * Unit Value: $\$25,000$ per bedroom.
Main Floor Area Allowance: * $Sale\,2\, (200\,m^2) = \$570,000$ * $Sale\,3\, (168\,m^2) = \$545,000$ * $Difference: \$25,000 / 32\,m^2 = \$781/m^2$
Land Area Allowance Calculation: * Based on analyzing differences after floor area adjustments: $\$2,122/m^2$

Adjustment Data Table

Attribute	Subject	Sale 1 ( $\$520,000$ )	Sale 2 ( $\$570,000$ )	Sale 3 ( $\$545,000$ )
Land Area	$895\,m^2$	$876\,m^2$ (+ $\$40,318$ )	$883\,m^2$ (+ $\$25,464$ )	$875\,m^2$ (+ $\$42,440$ )
House Area	$161\,m^2$	$155\,m^2$ (+ $\$4,686$ )	$200\,m^2$ (- $\$22,649$ )	$168\,m^2$ (- $\$5,467$ )
Bedrooms	$4$	$4$ ( $\$0$ )	$5$ (- $\$25,000$ )	$5$ (- $\$25,000$ )
Total Adj.		$\$565,004$	$\$547,815$	$\$566,973$

Final Value Opinion: Choosing Sale 1 as the primary indicator: Roughly $\$565,000$ .

Alternative Methodologies

Cost Approach (Summation/Piecemeal): Used for unique or new properties. Formula: $V = L + (C - D)$ , where $V$ is Value, $L$ is Land, $C$ is Cost to construct, and $D$ is Depreciation.
Income Capitalization Approach: Used for investment/income-earning properties (not residential). It calculates future income potential and risk vs. reward balance, excluding emotional factors.
Discounted Cashflow: A derivative of the income approach.