Yes—if domestic building work in South Australia requires council approval and costs $20,000 or more, the building work contractor must arrange and pay for building indemnity insurance (BII), according to South Australian Government guidance, updated 19 February 2026; figures checked 1 October 2026. The threshold increased from $12,000 to $20,000 on 10 November 2025 under the Building Work Contractors Regulations, according to the South Australian Government Financing Authority. A person carrying out the building work themselves cannot take out BII.
What exactly triggers the requirement?
The current SA Government guidance links three conditions:
| Check | Requirement |
|---|---|
| Type of work | Domestic building work |
| Approval | The work must require council approval |
| Cost | $20,000 or more |
| Who must arrange and pay? | The building work contractor |
These conditions operate together. A project must fall within the domestic building work rules, require council approval and reach the $20,000 threshold for this BII requirement to apply.
Who must arrange and pay for the policy?
For work carried out by a contractor, the building work contractor must arrange and pay for BII. The owner should not treat their own insurance arrangement as a replacement for the contractor being required to take out the policy.
The contractor should be able to show that the policy is current. The owner can also confirm this directly with the insurer.
Why can’t an owner take out BII for their own work?
The SA Government expressly says that a person cannot take out BII if they are carrying out the building work themselves. Its guidance does not state a reason for this exclusion, so a broader rationale should not be assumed.
The practical distinction is the role carrying out the work: when a builder carries out the work, the builder must take out BII. An owner doing the work themselves cannot take out this policy for that job.
What changed on 10 November 2025?
The statutory value threshold changed as follows:
| Period | BII threshold |
|---|---|
| Before 10 November 2025 | $12,000 |
| From 10 November 2025 | $20,000 |
The South Australian Government Financing Authority states that the increase from $12,000 to $20,000 was prescribed in the Building Work Contractors Regulations. The change concerns when BII is required; it does not change the rule that the building work contractor must arrange and pay for it.
Is the $20,000 threshold the same as the policy limit?
No. The $20,000 amount determines when BII is required. A policy limit is a separate part of the insurance arrangement.
The South Australian Government Financing Authority explains the policy-limit transition this way:
- New QBE policies issued on or after 1 October 2025 received a $250,000 policy limit.
- QBE policies issued before 1 October 2025 retained their existing $150,000 limit.
- From 10 November 2025, the Building Work Contractors Regulations prescribed a $250,000 limit for all new policies issued in South Australia, regardless of insurer.
- Policies issued by insurers other than QBE before 10 November 2025 remained subject to the $150,000 limit.
The issue date and insurer therefore matter when checking which policy limit applies.
What does BII protect?
The SA Government says BII protects the owner and future owners if the builder dies, disappears or becomes insolvent in relation to:
- work that has not been completed; and
- defective work that requires rectification.
Claims for defective work can usually be made up to five years from the date the building work was completed. That is a claims timeframe, not a general extension of every policy condition, so the policy terms still need to be checked.
What must happen before building work starts?
Building work cannot start until both of these actions are complete:
- The builder has taken out BII.
- The owner and the council have each received a copy of the certificate of insurance.
The owner should then:
- Confirm with the insurer that a current policy is in place.
- Ask the insurer to verify the insurance details and explain how the policy works.
- Read the contract and certificate carefully.
- Ask the contractor to clarify any terms or conditions that are not understood.
- Keep a copy of the certificate for records.
The certificate records the builder’s name and licence number, insurer, issue date, description of the insured work, and any policy limitations or conditions.
What other insurance and records should the owner check?
BII is not the only insurance consideration for the project. The SA Government separately advises owners to:
- protect and separately insure items they own at the building site during construction; and
- insure the building when construction is complete.
When selling the property, the owner must disclose whether indemnity insurance is in place.
This is general information, not financial or legal advice. Check the current South Australian Government regulator page and the policy’s PDS before relying on a certificate or making a decision.
Sources
- SA.GOV.AU — Building indemnity insurance
- South Australian Government Financing Authority — What’s New
FAQ
Does every $20,000 South Australian renovation need BII?
Under the current trigger described by the SA Government, the work must be domestic building work, require council approval and cost $20,000 or more.
Who must arrange and pay for BII?
The building work contractor must arrange and pay for the policy.
Can an owner insure their own renovation work?
No. The SA Government says a person cannot take out BII when they are carrying out the building work themselves.
When can building work start?
Work cannot start until the builder has taken out BII and both the owner and the council have received a copy of the certificate of insurance.
How long can a defective-work claim be made?
Defective-work claims can usually be made up to five years from the date the building work was completed.
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