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Commercial Property · Koste Knowledge Base

What is the Difference Between Residential and Commercial Depreciation?

Published 26 June 2026 · Last updated 26 June 2026

Quick Answer

Residential and commercial properties differ in depreciation rules under Australian tax law. Residential properties are subject to Division 40 and Division 43, with specific limitations on plant and equipment for second-hand properties post-2017. Commercial properties allow depreciation on all assets, including those previously used, and often have different effective life spans for similar assets.

Investors often find themselves puzzled by the differences in depreciation rules for residential and commercial properties. Understanding these differences is crucial for maximizing tax benefits and avoiding costly mistakes.

Differences in Depreciation Rules

Residential properties fall under Division 40 for plant and equipment and Division 43 for capital works. Since 9 May 2017, investors acquiring second-hand residential properties cannot claim depreciation on pre-existing plant and equipment, unless they were owned before this date. Commercial properties, however, allow depreciation claims on both new and pre-existing assets under Division 40, irrespective of acquisition date. Effective life of assets can also vary between residential and commercial properties, affecting the depreciation rate.

How This Works in Practice

Consider a 2015-built 3-bedroom house in Melbourne purchased for $800,000. Under Division 43, you can claim capital works deductions on the structure over 40 years. However, if purchased post-2017, plant and equipment such as carpets and appliances cannot be depreciated if previously used.

Contrast this with a commercial office in Sydney, bought for $1.5 million. Here, you can claim depreciation on all assets, including previously used items like air conditioning systems and office partitions, significantly enhancing tax deductions. If the office has $200,000 worth of plant and equipment, you could see a first-year tax saving of approximately $7,400 at a 37% marginal tax rate.

Professional Insight

In our experience, many investors overlook the comprehensive depreciation benefits available for commercial properties. One thing we frequently see is the misclassification of mixed-use properties, leading to missed claims. What most investors don't realise is that effective life estimates can differ significantly between asset types in residential and commercial settings, impacting depreciation schedules. Additionally, the higher initial cost of commercial property often translates into greater long-term depreciation benefits.

When Does the Answer Change?

  • Pre-1987 Buildings: Properties constructed before 1987 may have limited capital works deductions.
  • Mixed-Use Properties: Properties serving both residential and commercial purposes require careful classification to maximise claims.
  • Partial Year Use: If a property is acquired partway through the financial year, depreciation calculations must adjust for the period of ownership.
  • SMSFs: Self-managed super funds investing in property may have different implications for depreciation claims.

When Should You Seek Professional Advice?

Depreciation schedules can be complex, and the specifics often depend on individual circumstances, such as ownership structure and the property's usage. Engaging a Chartered Quantity Surveyor and accountant is advisable to navigate these intricacies and ensure compliance with tax laws while maximising deductions.

What to Do Next

  • Review your property portfolio to identify potential depreciation opportunities.
  • Consult a Chartered Quantity Surveyor to prepare a detailed depreciation schedule.
  • Discuss with your accountant how depreciation impacts your overall tax strategy.
  • Consider the impact of any renovations or improvements on depreciation claims.
  • Stay informed about changes in tax legislation that could affect your claims.
  • Frequently Asked Questions

    Can you claim depreciation on second-hand residential properties?

    For properties acquired post-9 May 2017, you cannot claim depreciation on previously used plant and equipment. Capital works under Division 43 remain claimable.

    How does mixed-use property affect depreciation claims?

    Mixed-use properties require clear classification to allocate depreciation correctly between residential and commercial components, impacting the deduction amount.

    Are effective life estimates the same for residential and commercial properties?

    No, effective life estimates can differ significantly, affecting asset depreciation rates and overall deductions.

    What happens if I renovate a commercial property?

    Renovations can increase depreciation claims. It's important to update your depreciation schedule to reflect new assets and improvements.

    How is depreciation reported in a tax return?

    Depreciation is reported as a non-cash deduction in your tax return, reducing your taxable income and thus your tax liability.

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    Written by Koste Team · Koste Chartered Quantity Surveyors · AIQS Member · RICS Member · TPB Registered · 1300 669 400 · info@koste.ai