Appraisal Depreciation vs. Accounting Depreciation: Why the Difference Matters for Property Owners

If you own real estate, you’ve probably heard the word “depreciation” used in two completely different contexts:

• your accountant talks about depreciation for tax purposes, often interchanges with the term “amortization”.

• your appraiser talks about depreciation when estimating the market value

They are not the same thing.

Understanding the difference is important especially for financing, estate planning, tax appeals, development decisions, or investment analysis.

At Jackson & Associates, we regularly see confusion between these two concepts. Here’s what property owners need to know:

Two Different Concepts & Two Different Purposes

The simplest way to understand the distinction:

• Accounting depreciation spreads cost over time.

• Appraisal depreciation measures loss in market value.

One is a bookkeeping tool. The other reflects real market behaviour.

They often produce very different conclusions about the same property.

What Depreciation Means in Real Estate Appraisal

When real estate appraisers use the term depreciation, we are referring to:

Any loss in property value from replacement cost new, from any cause.

This concept is used in the Cost Approach to value (one of the three core appraisal methods). The logic is straightforward:

Property Value = Land Value + (Replacement Cost New − Depreciation)

KEY POINT:  Appraisal depreciation measures how the market views a property’s condition, usefulness, and desirability today, not simply how long it has existed.

The Three Types of Appraisal Depreciation

Appraisers analyze depreciation in three categories:

1. Physical Deterioration “Wear and Tear”

This is value loss from aging or physical condition.

Examples include:

• roof wear

• structural aging

• deferred maintenance

• outdated mechanical systems

• material deterioration

Some physical deterioration is curable (repairs add more value than they cost).Other deterioration is incurable (not economically feasible to fix).

A well-maintained older building may have less depreciation than a poorly maintained newer one which is why appraisers consider effective age, not just chronological (actual age) age.

2. Functional Obsolescence = Design or Utility Problems

Functional obsolescence occurs when a property no longer meets modern standards or market expectations.

Examples include:

• outdated layouts

• insufficient parking

• low ceiling heights

• inefficient building design

• excess construction quality (over-improvement)

• obsolete building systems

The building may be in good condition, but its usefulness is reduced. Some functional issues can be corrected; others cannot.

3. External (Economic) Obsolescence — Outside Influences

External obsolescence comes from factors outside the property itself.

Examples include:

• neighbourhood decline

• nearby incompatible uses

• zoning changes

• market oversupply

• economic conditions

• traffic pattern changes

This type of depreciation is almost always incurable because the owner cannot control external forces.

What Matters in Appraisal Depreciation

Appraisal depreciation reflects:

• market reaction

• buyer behaviour

• property utility

• location influences

• economic conditions

It answers one question:

“What makes this property worth less in today’s market?”

What Depreciation Means in Accounting

Accounting depreciation serves a completely different purpose.

It is a financial and tax concept used to:

• allocate the cost of a building over time

• reduce taxable income

• match expenses with revenue

Accounting depreciation does not measure market value.

How Accounting Depreciation Works

Accounting methods typically include:

• straight-line depreciation

• declining balance methods

• Capital Cost Allowance (CCA)

These follow predetermined schedules set by accounting standards or tax regulations. They are time-based calculations and not market-based analyses

A property’s accounting depreciation continues according to schedule regardless of market conditions, neighbourhood changes, or property improvements.

Why the Difference Matters

Confusing these two concepts can lead to poor decisions.

A property can be:

• fully depreciated for accounting purposes but still highly valuable in the market, or

• lightly depreciated on financial statements but suffering major value loss due to location or design issues.

For example:

• An older apartment building may show heavy accounting depreciation but remain highly valuable because of strong rental demand.

• A newer commercial building may show little accounting depreciation yet suffer significant value loss due to poor location or functional design.

The real estate market itself (not amortization tables) is what determines a real estate value.

Why Property Owners Should Care

Understanding appraisal depreciation is critical for:

• refinancing decisions

• property tax appeals

• estate planning

• litigation support

• investment analysis

• development feasibility

• portfolio strategy

Market value depends on how buyers and investors view a property not how it appears on financial statements.

The Bottom Line

Accounting depreciation is about spreading cost.Appraisal depreciation is about measuring value loss.

They serve different purposes, use different methods, and often produce very different results.

Knowing the distinction helps property owners make better financial and investment decisions.

Questions about property value, market trends, or appraisal methodology?Jackson & Associates is based in Courtenay, BC and provides independent real estate valuation and consulting services to a wide variety of clients within the Vancouver Island and Upper Sunshine Coast market areas.