Begin with PlanSA, then confirm the local authority, property controls, wall dimensions, nearby loads, boundaries, drainage and the proposed construction scope.
South Australia approval and building pathway
Check the current position with PlanSA and the relevant local authority for the property. Bring the outcome, and the questions it raises, into the project brief before comparing quotes.
Explore retaining wall guides in South Australia
Use this statewide guide while more local guides are researched.
Property facts to test
- Wall length, average retained height, overall geometry and location.
- Boundary relationship and ownership evidence where relevant.
- Buildings, driveways, pools, roads, services, slopes and other loads.
- Surface water, subsoil drainage and final discharge.
- New work, replacement, alteration or repair of an existing wall.
- Designer, certifier, approval and contractor responsibilities.
Make the quote reflect the pathway
Ask each provider to state whether professional design, certification, authority applications and fees are included, provisional or excluded. Confirm the contracting entity, licence or registration evidence where applicable and the deliverables handed over at completion.
What to record before seeking quotes
- Dimensions
Length, average retained height and how the dimensions were measured. - Earthworks
Excavation, spoil quantity, disposal, temporary support and site protection. - Drainage
Aggregate, geotextile, pipe, outlets and stormwater connections stated separately. - Professional scope
Engineering, geotechnical input, certification and approvals included or clearly excluded. - Commercial scope
GST, payment stages, variations, programme, warranty and exclusions.
Common questions
Is there one retaining wall height rule for South Australia?
Do not use height alone. The applicable pathway can depend on wall location, loads, boundaries, other structures, site conditions, the proposed work and current jurisdiction rules.
Who should confirm approval requirements in South Australia?
Start with PlanSA and the property's local authority where applicable, then use the relevant certifier, surveyor, engineer or other qualified adviser for the specific question.