Retaining Wall Certification (Form 15 & Form 12)
Our Retaining Wall Certification service provides Queensland homeowners, builders, and developers with the documents required for approval, construction, and final sign-off. We prepare Form 15 (Design Certificate) and Form 12 (Inspection Certificate) for retaining walls, ensuring your project meets engineering, council, and building compliance standards. This gives you confidence that the design and construction follow the correct technical requirements from start to finish.
We begin by reviewing your retaining wall design, site conditions, and any supporting documentation. After this review, we issue a Form 15 Design Certificate that confirms the retaining wall has been engineered in accordance with Australian Standards and relevant Queensland legislation. In addition, the certificate outlines the design basis, assumptions, and compliance requirements your builder must follow.
During construction, we provide inspections when required. These inspections verify that the retaining wall is being built in line with the certified engineering plans. Once the inspected stages meet the design requirements, we issue a Form 12 Inspection Certificate. As a result, certifiers and councils can approve the retaining wall with confidence, knowing it has been checked by a qualified engineer.
Whether you’re constructing a new retaining wall, replacing a failed structure, or finalising documentation for building certification, our service ensures each stage aligns with compliance standards. Furthermore, our clear engineering instructions reduce delays, variations, and on-site uncertainty.
We provide Form 15 and Form 12 certification services across Brisbane, Ipswich, the Gold Coast, Logan, Redlands, Moreton Bay, the Scenic Rim, and the Sunshine Coast. Our engineering team works closely with builders and certifiers to deliver accurate, timely, and practical advice that suits Queensland’s diverse residential and commercial environments.
For more information on geotechnical standards and site requirements in Queensland, you can also review the Queensland Development Code (QDC), which outlines guidelines relating to soil stability, fill material, and site classification.
Retaining Wall Certification (Form 15 & Form 12) – What’s Included
Form 15 – Design Compliance Certification
This certificate confirms your retaining wall design complies with the Building Act, Australian Standards, and council requirements. We prepare a compliant Form 15 based on your engineering drawings, site details, and any supporting documentation.
Form 16 – Construction Stage / Final Certification
We provide Form 16 certification once the retaining wall has been inspected for correct construction. This verifies footing sizes, steel placement, materials, drainage installation, and general compliance with the approved engineering design.
Site Inspection for Certification
A qualified engineer attends site to review construction elements needed for certification. This includes verifying excavations, concrete strength, steel reinforcement, wall alignment, and drainage details before issuing Form 16.
Compliance Review Against Approved Engineering
We check that the retaining wall has been built exactly to the approved engineering drawings. Any variations or issues are noted, with clear instructions on what must be rectified before certification can be issued.
Fast Turnaround & Council-Ready Documentation
We deliver certification quickly so you can proceed with approvals, settlement, or project completion. All certificates and supporting documents are provided in council-ready format for smooth submission.
Why Choose Our Retaining Wall Certification (Form 15 & Form 12) Service
Clients choose our Retaining Wall Certification service because we provide clear and reliable engineering support for Form 15 and Form 12 requirements in Queensland. We guide homeowners, builders, and contractors through the full certification process and ensure every retaining wall meets safety and compliance standards.
We issue Form 15 when we design the retaining wall. This certificate confirms that our engineering follows the Building Act, the Building Code of Australia, and all relevant Australian Standards. In addition, we issue Form 12 after we review the construction work. This confirms the wall matches the certified design and meets the required structural expectations.
Our certification process is simple and transparent. First, we review the design and check all structural components. Then we assess construction photos, site notes, or inspection details supplied by your builder. As a result, we identify issues early, reduce delays, prevent rework, and support strong long-term performance.
We also guide clients through council and private certifier requirements. Furthermore, we explain when certification is mandatory, what documents you need, and how to avoid common compliance problems. Our engineers communicate directly with builders to ensure correct construction and smooth approval.
With clear pricing, fast turnaround times, and practical engineering advice, we deliver a certification service trusted across Queensland. Whether you need certification for a new retaining wall, a replacement structure, or an existing wall built by another contractor, we supply the documents required for safe and compliant approval.
For more information on geotechnical standards and site requirements in Queensland, you can also review the Queensland Development Code (QDC), which outlines guidelines relating to soil stability, fill material, and site classification.
Reliable Form 15 & Form 12 certification for retaining walls