Property Valuation Methods Explained

The comparative market analysis (CMA), also known as the direct comparison approach, is the most widely used valuation method for residential property in Australia. It works by comparing the subject property to similar properties (comparables or "comps") that have recently sold in the same area.

A valuer selects 3-6 comparable sales, ideally within the same suburb or a nearby similar suburb, sold within the last 3-6 months. Adjustments are then made for differences between the comparables and the subject property:

- **Land size**: A property on 600 sqm is worth more than an otherwise identical one on 450 sqm. Adjustments are typically made per square metre of land. - **Dwelling size and configuration**: Number of bedrooms, bathrooms, and car spaces. An extra bedroom might add $30,000-$80,000 depending on the market. - **Condition and quality**: A renovated kitchen and bathrooms can add significant value. Conversely, a property requiring major work is discounted. - **Position**: Corner blocks, elevated positions, water views, or north-facing aspects attract premiums. Busy road frontage, proximity to power lines, or flight paths attract discounts. - **Date of sale**: If the market has moved since the comparable sold, a time adjustment is applied (e.g., +5% for a comparable that sold 6 months ago in a rising market).

The CMA is effective when there are sufficient comparable sales. It becomes less reliable in areas with heterogeneous housing stock, very low transaction volumes, or rapidly changing market conditions. For unique or high-value properties, fewer reliable comparables may exist.

Most real estate agents provide a free CMA (also called an appraisal) to prospective sellers. While useful as a guide, agent appraisals may be optimistic because the agent has an incentive to win the listing. A registered valuer's assessment is more objective.

The capitalisation approach values a property based on its income-producing potential. It is primarily used for investment properties, commercial real estate, and development sites.

The formula is: **Property Value = Net Operating Income / Capitalisation Rate**

For residential investment property, Net Operating Income (NOI) is the gross annual rental income minus operating expenses (council rates, water rates, insurance, strata levies, management fees, repairs, and vacancy allowance). The capitalisation rate (cap rate) reflects the expected rate of return for similar properties in the area.

Example: A property generating $30,000 net annual income in an area where comparable investment properties trade at a 5% cap rate would be valued at $600,000 ($30,000 / 0.05).

Cap rates vary by location and property type: - Inner-city apartments: 3-4% (lower yield, higher growth expectation) - Middle-ring houses: 3.5-4.5% - Regional centres: 5-7% - Commercial/industrial: 5-9%

A lower cap rate implies higher value (investors accept a lower return because they expect capital growth or perceive lower risk). A higher cap rate implies lower value or higher perceived risk.

This method is particularly useful when comparing investment properties across different markets. However, it relies heavily on accurately estimating both the sustainable rental income and the appropriate cap rate. Temporary vacancies, above-market rents, or unusual expenses can distort the calculation.

The summation method values a property by adding the land value and the depreciated replacement cost of improvements (buildings, landscaping, driveways, fencing).

**Property Value = Land Value + Depreciated Replacement Cost of Improvements**

The land value is determined using the direct comparison approach — comparing the subject land to recent vacant land sales in the area. If no vacant land has sold recently, the valuer may hypothetically extract land values from improved property sales.

The replacement cost of the building is estimated based on current construction costs per square metre (typically $1,800-$3,500/sqm for standard residential construction, higher for premium finishes). Depreciation is then applied to reflect the building's age, condition, and functional obsolescence.

This method is most useful for: - **New or near-new properties** where depreciation is minimal and the cost approach closely matches market value - **Unique properties** with few comparable sales (e.g., heritage homes, rural homesteads) - **Insurance valuations** to determine replacement cost - **Properties where land value is the dominant component** (e.g., an old house on a large block in an expensive suburb — the building may contribute little to total value)

The summation method tends to understate the value of well-located established properties because it does not fully capture the premium that buyers pay for character, amenity, and lifestyle factors that are embedded in market transactions but not reflected in construction costs.

Automated Valuation Models (AVMs) use statistical algorithms and large datasets to estimate property values without a physical inspection. Major AVM providers in Australia include CoreLogic, PropTrack (REA Group), and Valocity.

AVMs analyse recent sales data, property characteristics (bedrooms, bathrooms, land size, building area), and broader market trends to generate an estimated value, usually accompanied by a confidence score or forecast standard deviation (FSD). A lower FSD indicates higher confidence.

**Advantages**: - Instant results at low or no cost - Useful for portfolio monitoring and market screening - Consistent methodology applied uniformly

**Limitations**: - Cannot account for property condition, quality of finishes, views, or internal layout - Less accurate for renovated properties (the AVM does not know about the new kitchen) - Less reliable in areas with few sales or heterogeneous housing - Can lag the market during rapid price movements

AVMs are widely used by banks for low-risk lending decisions (e.g., refinancing at low LVR) and by property platforms to display estimated values. However, they should not be relied upon as a substitute for a professional valuation when making purchase decisions. Treat AVM estimates as a starting point for research, not a definitive answer.

CoreLogic's AVM confidence levels range from high (FSD under 10%) to low (FSD over 25%). Only properties with sufficient comparable data receive a high-confidence estimate.

When you apply for a home loan, the lender orders a valuation to determine how much the property is worth for lending purposes. This **bank valuation** (or mortgage valuation) can differ from the price you agreed to pay.

Bank valuers tend to be conservative. Their role is to assess the security value for the lender — the price the property would likely achieve in a forced or quick sale, not the maximum a motivated buyer might pay. As a result, bank valuations sometimes come in below the purchase price, particularly in competitive markets or for unusual properties.

If the bank valuation is lower than your purchase price, you have several options: - **Make up the difference with additional cash** (your deposit effectively increases) - **Request a revaluation** from the same lender, providing additional comparable sales data - **Apply to a different lender** who may use a different valuer - **Renegotiate the purchase price** with the vendor (difficult if the contract is already exchanged)

Bank valuations can be: - **Desktop/AVM**: No physical inspection, based on data alone. Used for low-LVR refinances. - **Kerbside**: Valuer drives past to confirm the property exists and assess its condition externally. - **Full internal**: Valuer inspects the property inside and out. Required for higher-LVR loans or unusual properties.

The cost of a bank valuation (typically $300-$600) is usually passed on to the borrower, though some lenders absorb it. Note that the bank valuation report is prepared for the lender — you may not receive a copy (though some lenders now share them).

An independent valuation from a Certified Practising Valuer (CPV) registered with the Australian Property Institute (API) provides an objective, professionally prepared assessment that you control.

Situations where an independent valuation is worthwhile:

- **Before making an offer**: If you are unsure about fair market value, an independent valuation ($300-$600 for a standard residential property) gives you an evidence-based anchor for negotiations. - **Disputing a bank valuation**: If the bank valuation came in low and you believe the property is worth more, an independent valuation can support your case for a revaluation. - **Settlement of estates**: When dividing property assets among beneficiaries, an independent valuation provides an objective basis for distribution. - **Capital gains tax**: When calculating CGT on an investment property, a valuation at the date of acquisition (if not purchased at market) or at the date of death (for inherited property) may be required. - **Family law proceedings**: Court-ordered or agreed valuations for property settlement in divorce. - **Insurance**: To ensure your building is insured for the correct replacement cost (not market value — these are different figures).

When engaging a valuer, confirm they are a Certified Practising Valuer and are familiar with the local market. Provide them with any relevant information about the property (approved DAs, recent renovations, special features) so their assessment is well-informed.

*This guide provides general information only. Seek professional valuation advice for specific property decisions.*