Pre-purchase structural building inspections Perth are one of the most common reasons clients engage our Registered WA Builders. However, structural inspections are also undertaken where cracking, movement, roof deflection or other structural concerns require an independent visual assessment
If you're seeking a broader assessment of the property's overall condition, our Building Inspections Perth service provides a comprehensive evaluation of visible building defects, maintenance issues and safety concerns in addition to the structural elements.
Master Building Inspectors provides Pre-Purchase Structural Building Inspections throughout Perth completed by Registered WA Builders with extensive residential construction experience. Our inspections are conducted in accordance with the principles of AS 4349.1, focusing on the identification of visible major structural defects and conditions that may adversely affect the structural performance of the building.
Reports are typically delivered within 24 hours, providing clear photographs, detailed observations and practical recommendations to assist purchasers in making informed decisions.
Why Choose Master Building Inspectors?
- Registered WA Builders
- Over 20 years' industry experience
- Independent inspections
- AS 4349.1 compliant
- Reports within 24 hours
- Thousands of Perth properties inspected
- Detailed colour photographs
- Practical recommendations
What is a Pre-Purchase Structural Building Inspection?
A pre-purchase structural building inspections Perth is a visual assessment of the readily accessible structural elements of a residential property at the time of inspection.
Unlike a general building inspection, which may comment on a broad range of maintenance and workmanship issues, a structural building inspection focuses specifically on identifying major structural defects that are visible during the inspection.
The purpose of the inspection is to determine whether significant structural damage, movement or deterioration is evident that may require further investigation or repair.
As the inspection is entirely visual, concealed building elements, inaccessible areas and components requiring destructive investigation cannot be assessed.
Why Arrange a Structural Inspection Before Purchasing?
While many structural problems begin as relatively minor issues, they can develop into significant and costly repairs if left undetected.
A structural building inspection provides valuable information before settlement, allowing purchasers to better understand the property's structural condition and determine whether further specialist advice may be required.
A structural inspection may assist in identifying visible issues such as:
- Significant structural cracking
- Differential building movement
- Roof frame distortion or sagging
- Structural timber deterioration
- Termite-related structural damage
- Deflected floors or supporting members
- Movement to retaining walls
- Structural deterioration affecting the building's performance
Identifying these conditions before settlement provides buyers with greater confidence and helps reduce the likelihood of unexpected structural repair costs after purchase.

What Do We Visually Assess?
Our inspections concentrate on the property's readily accessible structural building elements that can be safely inspected at the time of attendance. Throughout Perth we regularly inspect:
- Double brick homes
- Timber framed homes
- Coastal properties
- Hills properties
- New housing estates
- Established suburbs
The extent of the inspection depends on safe access and visibility at the time of inspection. Depending on the property's construction, age and accessibility, this may include:
External Structural Elements
- Brickwork
- Structural cracking
- External walls
- Concrete slabs
- Visible footings where exposed
- Retaining walls
- Structural movement
- Differential settlement
- External structural timber
Internal Structural Elements
- Load-bearing walls
- Internal cracking
- Ceiling movement
- Floor movement
- Structural timber where visible
- Evidence of structural distress
Roof Structure
Where safe access is available, the roof structure may be visually assessed, including:
- Roof framing
- Rafters
- Trusses
- Underpurlins
- Strutting beams
- Collar ties
- Ridge members
- Evidence of structural sagging
- Water-related structural deterioration
Subfloor Areas
Where adequate access exists, inspections may include:
- Bearers
- Joists
- Stumps
- Subfloor ventilation
- Moisture-related structural deterioration
- Timber movement
- Structural defects affecting floor performance



What is a Major Structural Defect?
A structural building inspections Perth major structural defect is generally considered to be a fault or deterioration that affects the intended structural performance of a building element.
Examples may include:
- Significant structural movement
- Major structural cracking
- Failure of structural members
- Excessive roof deflection
- Serious deterioration of structural timbers
- Structural damage caused by termites
- Building movement affecting structural stability
Not every crack or defect represents a major structural issue. Many homes experience minor settlement or seasonal movement throughout their service life.
Where visible conditions require further investigation beyond the scope of a visual inspection, recommendations for additional assessment by an appropriately qualified specialist may be provided.
Structural Building Inspection vs Building Inspection
Although the services are often confused, a structural building inspection and a general pre-purchase building inspection are not the same.
A general building inspection considers the overall condition of the property and may include maintenance items, safety hazards and general building defects.
A pre-purchase structural building inspections Perth focuses specifically on the visible structural performance of the building and aims to identify major structural defects affecting the property's structural integrity.
If you are primarily concerned about cracking, movement, roof sagging or structural damage, a structural building inspection may be the more appropriate service.
What Isn't Included in a Structural Building Inspection?
A pre-purchase structural building inspection is a visual assessment only and is limited to areas that are readily accessible at the time of inspection.
The inspection does not include destructive testing, dismantling of building components or investigation of concealed structural elements. Where areas are inaccessible or defects are suspected but cannot be confirmed visually, further specialist investigations may be recommended.
Unless specifically agreed, a structural building inspection does not include:
- Destructive or invasive testing
- Underground footings or concealed foundations
- Concealed framing timbers or steel framing
- Concealed tie-down systems or bracing
- Verification of timber or steel member sizes
- Engineering design or structural calculations
- Building code or regulatory compliance assessments
- Identification of unauthorised building work
- Timber pest inspections
- Plumbing, electrical or drainage assessments
- Predictions regarding future building movement or performance
Our inspection provides an independent assessment of the property's visible structural condition at the time of inspection and should not be interpreted as a warranty or guarantee against future defects.
Where moisture ingress or defective wet area waterproofing is suspected, our Waterproofing Inspection Perth service provides a detailed assessment of waterproofing defects affecting bathrooms, laundries, balconies and other wet areas.
Common Structural Defects We Identify
Every property is different, and not all structural defects indicate significant structural failure. Many older homes exhibit minor settlement or age-related movement that has stabilised over time.
During our inspections, we commonly identify visible structural issues including:
Structural Cracking
Cracking within masonry, concrete or internal finishes may indicate normal building settlement or, in some cases, ongoing structural movement.
The location, width, direction and pattern of cracking are all considered during the inspection to determine whether further investigation may be warranted.
Roof Frame Movement
Roof structures may display signs of movement resulting from age, overloading, inadequate support or deterioration of structural members.
Differential Settlement
Some movement within residential buildings is considered normal over time. However, excessive differential settlement may result in significant cracking, distortion of openings or movement affecting structural performance.
Visible indicators may include:
- Stepped brick cracking
- Separation around window and door openings
- Uneven floor levels
- Distorted wall surfaces
Retaining Wall Movement
Where retaining walls form part of the inspection scope, visible structural movement, leaning, cracking or deterioration may be identified.
Movement within retaining structures may affect surrounding improvements and should be assessed where significant deterioration is observed.
Our Inspection Process
Our structural building inspections are designed to provide purchasers with a clear understanding of the property's visible structural condition before settlement.
Step 1 – Booking Your Inspection
Once your inspection has been booked, access arrangements are confirmed with the selling agent or property owner.
Step 2 – On-Site Structural Assessment
A Registered WA Builder conducts a systematic visual inspection of the property's readily accessible structural elements.
Where safe access is available, this may include roof spaces and subfloor areas together with both internal and external structural components.
Step 3 – Photographic Documentation
Relevant structural observations are supported by clear photographs to assist clients in understanding the property's condition.
Photographs provide an objective record of visible structural defects identified during the inspection.
Step 4 – Detailed Written Report
A comprehensive report is prepared outlining:
- Visible structural observations
- Major structural defects identified
- Supporting photographs
- Recommendations where appropriate
- Further specialist investigations where considered necessary
Reports are generally delivered within 24 hours of the inspection.
Older Homes and Australian Standards
Many homes throughout Perth were constructed under earlier editions of Australian Standards and building regulations.
Accordingly, an older property should not be expected to comply with today's construction requirements simply because standards have evolved over time.
Our inspections consider the property's age, construction methods and general condition when assessing visible structural performance.
The report is not intended to certify compliance with current building regulations or confirm that the property satisfies contemporary construction standards.
When Further Specialist Advice May Be Required
Although many structural concerns can be identified through a visual inspection, some conditions cannot be fully assessed without specialist investigations.
Where appropriate, recommendations may be made for further assessment by suitably qualified professionals such as:
- Structural engineers
- Licensed surveyors
- Timber pest inspectors
- Geotechnical consultants
- Licensed plumbers where moisture-related movement is suspected
This approach helps ensure purchasers receive the most appropriate advice where issues extend beyond the scope of a visual structural inspection.
Some structural concerns require a more focused assessment than a standard pre-purchase inspection. Our Specific Building Investigations are tailored to investigate individual building defects such as structural cracking, roof movement, water ingress or other isolated concerns.
Industry Standards and Building Information
Our inspections are completed in accordance with recognised industry practices and reference applicable Australian Standards where appropriate. The following resources provide additional information regarding residential building inspections and building construction within Australia.
National Construction Code (NCC)
The National Construction Code provides Australia's minimum technical requirements for the design and construction of buildings. While pre-purchase structural building inspections are not compliance inspections, the NCC provides important guidance on building performance and construction practices.
AS 4349.1 – Inspection of Buildings
Our structural building inspections are undertaken in accordance with the principles of AS 4349.1 – Inspection of Buildings. This Australian Standard establishes the scope and limitations of visual pre-purchase building inspections, including the identification of major defects and safety hazards. The Standard is available for purchase from Standards Australia.
Department of Energy, Mines, Industry Regulation and Safety (WA)
The Department of Energy, Mines, Industry Regulation and Safety (DEMIRS) provides guidance on residential building matters in Western Australia, including consumer information relating to construction standards, licensing, dispute resolution and building legislation.
These resources provide useful background information for property purchasers and complement the findings contained within a professional pre-purchase structural building inspection report.
Frequently Asked Questions
What is the difference between a structural building inspection and a building inspection?
A structural building inspection focuses on the visible structural elements of the property and aims to identify major structural defects. A general building inspection provides a broader assessment of the property's overall condition and may also comment on maintenance issues, safety hazards and general building defects.
Do you inspect the roof space?
Where safe access is available, the roof space may be visually assessed. Access is subject to safety considerations, adequate clearance and accessibility at the time of the inspection.
Do you inspect the subfloor?
Yes, where adequate access is available. If access is restricted or considered unsafe, the inspection will be limited to areas that can be safely viewed.
Can you see hidden structural defects?
No. A structural building inspection is a visual assessment only. Concealed defects behind wall linings, beneath floor coverings or within inaccessible areas cannot be identified without destructive investigation.
Does the inspection include engineering certification?
No. The inspection does not include engineering calculations or structural certification. Where structural concerns require further investigation, referral to an appropriately qualified structural engineer may be recommended.
Do older homes have to comply with today's Building Code?
Not necessarily. Many homes were constructed under earlier building regulations and Australian Standards. Older properties should generally be assessed in the context of the construction practices applicable at the time they were built.
Can you tell if a crack is structural?
Visible cracking can often be assessed for characteristics that may indicate structural movement. However, where the cause cannot be determined through visual inspection alone, further specialist investigation may be recommended.
Will the inspection identify termite damage?
Where termite-related structural damage is visible, it will be documented. However, identifying active termite activity or concealed termite damage requires a dedicated timber pest inspection.
How long does the inspection take?
Inspection times vary depending on the property's size, construction and accessibility. Most inspections are completed within approximately one hour, with reports generally delivered within 24 hours.
Can you inspect before settlement?
Yes. Most structural building inspections are completed during the pre-purchase period, allowing buyers to better understand the property's structural condition before settlement.
Related Inspection Services
Master Building Inspectors also provides a range of specialist inspection services throughout Perth, including:
- Building Inspections Perth
- Combined Building & Pest Inspections
- Practical Completion Inspections
- New Construction Stage Inspections
- Waterproofing Inspections
- Dilapidation Reports
- Specific Building Investigations
These services may be recommended depending on the age, condition and intended purchase of the property.
If you're building a new home, our New Construction Stage Inspections help monitor workmanship and structural compliance throughout each stage of construction, from slab preparation through to practical completion. If neighbouring construction, demolition or excavation works are planned, our Dilapidation Reports Perth.
Before taking possession of a newly constructed home, our Practical Completion Inspections identify incomplete works, workmanship defects and finishing items requiring attention prior to final handover.
Arrange Your Structural Building Inspection
If you're purchasing a property in Perth and would like an independent assessment of its visible structural condition, Master Building Inspectors can assist.
Our Registered WA Builders conduct comprehensive visual structural inspections in accordance with the principles of AS 4349.1, providing detailed photographic reports and practical recommendations to assist purchasers in making informed decisions.
We inspect residential properties throughout the Perth metropolitan area and generally provide completed reports within 24 hours.
Contact Master Building Inspectors today to arrange your Pre-Purchase Structural Building Inspection or to discuss the most appropriate inspection for your property.

