When, Why and How Should a Quantity Surveyor be Used?
Quantity surveyors help tax agents maximise Division 43 deductions by providing reliable capital works valuations where construction cost data is missing or incomplete. Their reports strengthen compliance, reduce audit risk, and ensure clients are not under-claiming legitimate depreciation.
For tax agents advising property investors, a quantity surveyor can be a valuable partner in ensuring depreciation claims are both maximised and compliant.
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While not strictly required under Australian tax law, their involvement is particularly useful in the following scenarios:
When a quantity surveyor is useful:
- Second-hand property acquisitions
Where the client has purchased an existing property and does not have access to original construction cost records, a quantity surveyor can estimate costs to support Division 43 claims. - Capital works valuations (Division 43)
Where a substantiated estimate of construction expenditure is required to support Division 43 deductions, a quantity surveyor can provide a compliant capital works valuation—particularly in the absence of reliable historical cost data. - Clients with incomplete or missing documentation
If building contracts, invoices, or cost breakdowns are unavailable or insufficient, a QS provides a reliable, evidence-based estimate acceptable to the Australian Taxation Office. - Onboarding new clients
When taking over a client with existing investment properties, a QS report can help ensure depreciation claims have been correctly calculated and identify missed deductions. - Amended or backdated returns
For clients who have not previously claimed depreciation, a QS can prepare retrospective schedules to support amendments and maximise allowable claims. - ATO review or audit risk
A QS report strengthens the evidentiary basis of claims, giving tax agents greater confidence in defending positions if queried by the ATO. - Capital works vs non-deductible allocation
Where there is uncertainty in separating building costs from non-depreciable components (e.g. land or ineligible assets), a QS provides accurate apportionment.
Why this matters for tax agents
- Provides a defensible, expert basis for Division 43 claims
- Reduces compliance risk and audit exposure
- Helps ensure clients are not under-claiming deductions
- Supports efficient and consistent client file documentation