Pre-Purchase Structural Inspection
Buying a property with visible cracking, movement, unapproved wall removals or foundation concerns? Ostanes Engineering provides engineer-led pre-purchase structural inspections across Queensland.
Our RPEQ structural engineers assess visible structural conditions, interpret movement patterns, and provide clear written engineering findings before you commit to a purchase.
Understand the Structure Before You Buy
A pre-purchase structural inspection provides specialist engineering analysis of the building load-bearing components. We identify whether visible cracking, sagging, or unapproved renovations represent active distress, past settlement, or major structural risks.
Foundations & Concrete Slabs
Assessing visible slab cracking, differential settlement, reactive clay soil movement (AS 2870), and underpinning integrity.
Structural Load-Bearing Walls
Inspecting brick veneer, cavity masonry, and timber stud walls for stepped cracking, leaning, or loss of lateral stability.
Beams, Posts & Columns
Checking universal steel beams, timber lintels, verandas, and steel posts for excessive deflection, corrosion, or lack of support.
Floor Framing & Subfloors
Assessing timber bearers, joists, stumps, ant caps, and moisture-related decay in classic Queenslanders and suspended floors.
Roof Framing & Sagging Trusses
Inspecting rafters, purlins, strutting beams, collar ties, and wind tie-down connections (AS 4055) for structural deflection.
Previous Alterations & Additions
Identifying uncertified wall knock-throughs, illegal deck extensions, altered load paths, and missing Form 15 structural certifications.
When Should You Arrange a Pre-Purchase Structural Inspection?
Significant Masonry Cracking
Diagnosing diagonal, horizontal, or stair-step cracks in brickwork and foundations to distinguish structural distress from minor shrinkage.
Sloping Floors & Jammed Doors
Investigating out-of-level floors, sticking doors, distorted window frames, and wall gaps that point to differential foundation movement.
Foundation & Slab Settlement
Assessing soil erosion, compromised drainage, reactive soil shrink-swell, and subfloor stump rot that threaten property stability.
Load-Path Alterations & Renovations
Checking whether past open-plan wall removals or extensions were executed with adequate steel beams and appropriate load transfer.
Corrosion & Connection Distress
Inspecting rusty steel posts, termite damage, compromised tie-down brackets, and deteriorating retaining walls on steep sites.
High-Value Due Diligence
Gaining independent engineering clarity to negotiate price, avoid costly hidden defects, and make informed purchasing decisions.
Our Pre-Purchase Structural Inspection Process
1. Scope & Plans Review
Send us the property address, photos of cracks or concerns, and real estate links. We review the scope and provide a rapid, transparent fixed quote.
2. On-Site Inspection
An RPEQ structural engineer conducts a physical on-site assessment of accessible foundations, walls, roof space, beams, and subfloor elements.
3. Report & Next Steps
Receive a comprehensive written engineering report containing photographic evidence, cause assessment, defect severity, and actionable advice.
Areas We Serve
Ostanes delivers expert pre-purchase structural engineering inspections and comprehensive engineering reports across Southeast and regional Queensland. Our engineers account for Queensland reactive clay soils (AS 2870), sloping terrain settlement, timber pest risks (AS 1684), and building code compliance across the state. We provide dedicated property inspection services across all major metropolitan and regional areas, including:
- Brisbane
- Gold Coast
- Sunshine Coast
- Logan
- Ipswich
- Toowoomba
- Gympie
- Nambour
- Warwick
- Beaudesert
Related Structural Inspection Services
Engineering investigation into wall cracks, slab subsidence, and foundation movement with repair recommendations.
Expert assessment of roof truss deflection, modified rafters, solar panel loads, and cyclone tie-downs.
Pre-construction baseline photographic records of neighbouring buildings, driveways, and council infrastructure.
In-depth structural failure analysis, expert witness reporting, and root-cause engineering diagnostics.
Independent storm, impact, flood, and fire structural assessments for insurance claim scopes.
Engineering repair design, underpinning drawings, beam sizing, and RPEQ Form 15 certifications.
Looking for comprehensive defect assessments or forensic reporting? Explore our full Structural Inspection & Forensic Engineering Services →
What Clients Say
After the Report Lands
Pre-Purchase Structural Inspection FAQs
A standard pre-purchase building inspection provides a general overview of maintenance and minor defects across the entire home within a licensed building inspector scope. A structural engineering inspection focuses specifically on load-bearing systems, foundation stability, movement causes, and structural risk assessment conducted by a qualified RPEQ engineer.
Depending on accessibility and scope, our engineer assesses concrete slabs, footings, load-bearing walls, steel beams, timber posts, floor framing, subfloor stumps, roof trusses, bracing connections, and retaining structures.
No. Cracking can occur due to thermal expansion, normal plasterboard shrinkage, or minor non-structural settlement. Its engineering significance depends on location, aperture, direction, and evidence of active differential movement.
Visible indicators such as stepped masonry cracks, uneven floor levels, and binding doors provide valuable evidence of foundation movement. Our engineer interprets whether movement is historical or active, and recommends monitoring or geotechnical checks if needed.
Yes. Visible structural alterations—such as removed walls, enlarged openings, deck additions, and converted garages—can be assessed to determine whether load paths were correctly engineered and supported.
Yes. You receive an engineer-signed written structural inspection report detailing all physical observations, high-resolution photographs, root-cause assessment, risk level, and clear recommendations.
A visual structural inspection covers visible and accessible areas. Inaccessible cavities or concealed components cannot be verified without invasive access, which we identify clearly in the report limitations.
Our report provides actionable engineering recommendations—such as repair strategies, estimated remediation complexity, monitoring protocols, or underpinning engineering scopes to guide your negotiations or decisions.
Discuss a Pre-Purchase Structural Inspection
Send us the property address, photographs of cracks or structural concerns, and any available real estate details. We will review the property and confirm availability for an inspection.
Book an engineer-led structural assessment before committing to your purchase.
- Phone: 0411 631 777
- Email:
- Service Coverage: Queensland Wide
