What is a retrospective property valuation?
A retrospective property valuation is an independent assessment of a property's market value as at a date in the past, prepared by a Certified Practising Valuer in accordance with the Australian Property Institute's Professional Practice Standards and the ATO's Market Valuation Practice Instruction (MVPI). It uses contemporaneous comparable sales, current physical inspection, and historical records to produce a defensible figure that can support a CGT calculation, an estate distribution or a transfer between related parties.
"Where a market valuation is required for taxation purposes, the Commissioner expects the valuation to be undertaken by a person with the relevant qualifications, experience and knowledge."
The legal framework
Three layers of authority govern retrospective valuations for tax purposes. Each shapes a different aspect of the report — what counts as market value, when an independent valuer must be engaged, and how the ATO assesses the result.
- ITAA 1997 s110-25 / s116-30 — establish the cost base and capital proceeds rules, including market value substitution.
- ITAA 1997 s118-192 — the 'home first used to produce income' rule that deems acquisition at market value when a former home becomes a rental.
- ATO Market Valuation Practice Instruction (MVPI) — the practical expectations for documentation, methodology and qualifications.
- API Professional Practice Standards (PS, ANZVTIP) — the technical standards every CPV must follow when issuing a report.
When is a retrospective valuation required?
Retrospective valuations are needed whenever the ATO needs market value at a date other than the sale date. The most common triggers we see are:
- Property purchased before 20 September 1985 that has changed character or use after that date.
- A main residence first used to produce income (s118-192 ITAA 1997).
- Inheritance — establishing date-of-death market value to reset the beneficiary's cost base.
- Change in trust deed, ownership structure or in-specie SMSF contribution.
- Family law settlements requiring historical asset values.
- GST margin scheme valuations as at 1 July 2000.
Evidence we use to value the past
Retrospective valuations rely on contemporaneous evidence — sales that settled within a reasonable window of the effective date, current physical inspection where possible, and historical records describing the property's condition at the date in question. Our typical methodology layers:
- Sales evidence from RP Data, Pricefinder and APM going back to 1985.
- Council records, planning approvals and historical aerial photography.
- Original purchase contracts, prior valuations and renovation records you provide.
- Adjustment for time, location, land area, condition and improvements.
Real estate appraisal vs registered valuation
The ATO does not accept agent appraisals as substantiation for material CGT positions. The table below summarises the key differences.
| Aspect | Real estate appraisal | Registered valuation |
|---|---|---|
| Author | Real estate agent | Certified Practising Valuer (API) |
| Independence | Conflicted (seeks listing) | Independent — no relationship to property |
| Methodology | Marketing opinion | Direct comparison + capitalisation, fully evidenced |
| Comparable schedule | Optional | Required, with addresses and adjustments |
| ATO acceptance | Not accepted | Accepted as substantiation |
| Professional liability | None for valuation | Held by valuer's PI insurer |
ATO-compliant report format
Every retrospective valuation we issue follows API Professional Practice Standards and the ATO MVPI. The report is structured so your accountant can lodge it with confidence and so the valuation withstands ATO review or objection.
- Property identification and inspection summary.
- Statement of valuation methodology and assumptions.
- Schedule of comparable sales with full address and adjustment matrix.
- Signed certification by a Certified Practising Valuer.
- Statement of qualifications and limitations.
How it works — five steps
- 1
Brief & quote
Email the property address, the relevant date, and a short note on the purpose. We return a fixed-fee quote within 2 business hours for retrospective valuations.
- 2
Inspection
A Certified Practising Valuer (API) attends the property for an internal and external inspection. Tenanted properties are coordinated directly with the occupier.
- 3
Comparable sales analysis
We research settled sales using RP Data, Pricefinder, APM and council records, applying the direct-comparison and (where relevant) capitalisation approaches.
- 4
Report drafting
The report is drafted to API Professional Practice Standards and the ATO Market Valuation Practice Instruction (MVPI), with full comparable schedules and signed certification.
- 5
Delivery
The signed PDF is delivered to you and (on request) directly to your accountant, solicitor or auditor within 5 business days of inspection.
Glossary
Plain-English definitions of the terms used in this report and in related ATO guidance.
- Pre-CGT asset
- An asset acquired before 20 September 1985 that is generally exempt from capital gains tax — but may become taxable on changes of character, majority underlying ownership, or use.
- Cost base
- Defined in Division 110 of the ITAA 1997. The amount used to calculate a capital gain, comprising acquisition cost, incidental costs, holding costs, capital improvements and title costs.
- Market value substitution rule
- Section 116-30 ITAA 1997 — substitutes market value for the actual capital proceeds where the parties did not deal at arm's length or there was no consideration.
- MVPI
- ATO Market Valuation Practice Instruction — the Commissioner's published guidance on what constitutes a defensible valuation for tax.
- API
- Australian Property Institute — the professional body governing valuers, including the CPV designation and the Professional Practice Standards.
- Direct comparison approach
- The principal valuation method for residential and most owner-occupied property — analysing comparable settled sales and adjusting for differences.
- Capitalisation approach
- Used for income-producing property — net market rental capitalised at a yield derived from comparable investment sales.