Short answer
A Stamp Duty or transfer duty valuation can sometimes be updated, but this depends on the original instructions, valuation date, transaction details, property changes, new evidence and revenue authority requirements.
In some cases, a short amendment, updated report or reissue may be appropriate. In other cases, a new valuation may be required.
A duty valuation should not be updated simply by changing the value figure.
Why this matters
Duty valuations are prepared for a specific property interest, transaction context and valuation date.
If the valuation date changes, transaction details change, new documents are provided or the property has changed, the original report may no longer be suitable.
The valuer needs to decide whether the existing report can be amended or whether a new valuation is required.
When an update may be appropriate
An update may be appropriate where the original report remains broadly suitable and the change is limited.
Examples may include:
- Minor factual correction
- Clarification of wording
- Updated transaction information that does not change the valuation basis
- Additional comparable evidence requiring review
- Reissue for the same purpose and valuation date
- Further solicitor or conveyancer instructions confirming the same valuation date
The valuer should decide whether the new information is material to the valuation.
When a new valuation may be required
A new valuation may be required where the original report no longer matches the duty-related purpose.
This may occur where:
- The valuation date changes
- The transaction type changes
- The property interest being transferred changes
- The property has been renovated, damaged or altered
- New lease or income information is provided
- The original report was prepared for a different purpose
- The revenue authority requires a new or current valuation
- The original inspection basis is no longer suitable
- The report is too old for the intended use
Changing the value without proper review may produce a misleading report.
New information after the report is issued
New information may include transfer documents, title details, lease information, property plans, renovation records, building reports, revenue authority correspondence or additional market evidence.
The valuer will consider whether the information is relevant and material to market value as at the valuation date.
If the information is material, the report may need amendment, update or replacement.
Corrections and updates
A correction may deal with a typographical error, formatting issue or minor factual matter that does not change the valuation reasoning or conclusion.
An update usually involves further consideration of evidence, market conditions, property information, assumptions or suitability of the original report.
The distinction matters because a minor correction may not require a new valuation opinion, while a material update may require additional analysis.
Common misunderstandings
An update is not just a new number.
The valuation date, evidence, assumptions and transaction context need to be considered.
A new transaction date may require new analysis.
The relevant market evidence may differ.
Revenue authority requirements may change the answer.
The solicitor or conveyancer should confirm current requirements.
Commercial property updates may need lease review.
New rent, lease or outgoings information can affect value.
The valuer does not decide the duty outcome.
The valuer provides market value evidence only.
Related glossary
- Stamp Duty
- Transfer Duty
- Date of Valuation
- Updated Valuation
- Market Value
- Related Party Transfer
- Reliance
- Assumption
- Limitation
- Valuation Report
Related articles
- Stamp Duty Property Valuations
- What is a Stamp Duty property valuation?
- When is a related-party transfer valuation needed?
- What valuation date is used for Stamp Duty?
- What documents are needed for a Stamp Duty valuation?
- What is market value for Stamp Duty?
- Can a valuation be updated after it is completed?
- Who can rely on a valuation report?
Related services
Prepared by:
Tigran Amiyants, Certified Practising Valuer (CPV), Managing Director, Northbourne Valuers.
Last reviewed:
July 2026.
General information note:
This page provides general information only and does not constitute valuation, legal, taxation or financial advice. Stamp Duty and transfer duty matters should be discussed with a qualified solicitor, conveyancer, accountant or relevant revenue authority. Every valuation depends on the specific property, purpose, valuation date, evidence, assumptions and instructions.