What Is a Dilapidation Report? A South Australia Guide

If you own a home, commercial property, or strata unit in Adelaide and a neighbouring lot is about to undergo construction, demolition, or significant ground works, a dilapidation report is one of the most important protective measures you can take. Think of it as a detailed “before” photo of your property — except far more thorough than anything you could capture on a phone.

In South Australia, dilapidation reports (also called “dilapidation surveys”) are routinely required by councils as conditions of development approval, and they are widely accepted by insurers, builders, and the courts as credible evidence. This guide walks you through everything you need to know.

What Does a Dilapidation Report Include?

A professional dilapidation report is a comprehensive document. While the exact format varies between surveyors, the following elements are standard across the industry in South Australia:

High-Resolution Photographs

The core of every dilapidation report is its photographic record. A qualified surveyor will take hundreds of date-stamped, high-resolution images covering every accessible area of the property. Photographs capture walls (interior and exterior), ceilings, floors, foundations, driveways, paths, fences, retaining walls, pools, and landscaping. Each image is labelled with its location and orientation so it can be matched precisely to the corresponding area later.

Written Descriptions of Existing Conditions

Alongside each photograph, the surveyor provides a written description noting the type of defect or condition observed. This includes the nature of the issue (for example, “hairline crack” versus “structural crack”), its approximate dimensions, and its position on the element being inspected. Professional surveyors use consistent, standardised terminology so that descriptions remain objective and defensible.

Measurements and Crack Monitoring

Where significant cracks or movement are present, the surveyor will measure crack widths using calibrated crack gauges and, in some cases, install monitoring points or tell-tales that can be checked during and after the adjacent construction. Measurements are recorded in millimetres and referenced to dated photographs so that any progression over time can be demonstrated precisely.

Floor-Level Surveys

In cases where excavation or heavy vibration is anticipated, some dilapidation reports include floor-level surveys. These record the relative levels of ground floors and slabs at multiple points across the building, providing a benchmark to detect settlement or heave caused by the neighbouring works.

Property Details and Site Plan

The report will include the property address, legal description (title reference), date and time of inspection, weather conditions, and the names of people present. A simple site plan or orientation diagram shows the relationship between the subject property and the construction site, clarifying which elevations face the works and which are further away.

Surveyor's Statement and Qualifications

A properly prepared report includes a signed statement from the surveyor confirming their qualifications, professional indemnity insurance, and independence. This is critical because a report authored by someone with a financial interest in the construction project (for example, the builder's own employee) will be given less weight in any dispute.

When Are Dilapidation Reports Used in South Australia?

Dilapidation reports are most commonly required or recommended in the following situations across Adelaide and regional South Australia:

• As a condition of Development Approval (DA): Many Adelaide councils attach a condition requiring the developer to arrange a dilapidation report on adjoining properties before any work begins. This is especially common for multi-storey developments, basement excavations, and demolition projects.
• Before excavation near boundaries:Under the Building Code of Australia and SA planning rules, excavation within certain distances of a boundary (typically within the zone of influence of existing footings) triggers the need for a baseline record of the neighbour's property.
• Before demolition of an adjacent building: Demolition creates significant vibration, dust, and debris risk. A pre-demolition dilapidation report protects both the demolition contractor and the neighbouring owner.
• Before government infrastructure projects: Road widening, sewer upgrades, tram extensions, and other public works in Adelaide routinely require dilapidation reports on properties within the affected corridor.
• Heritage-listed or older buildings: Properties on the South Australian Heritage Register, or buildings with masonry construction, lime mortar, or unreinforced walls, are particularly vulnerable to vibration and ground movement. A dilapidation report is strongly recommended even when not formally mandated.
• Strata or community title developments: Where common property (such as shared walls, driveways, or car parks) adjoins a construction site, the strata corporation should commission a report to protect the interests of all lot owners.

If you are unsure whether your situation requires a dilapidation report, our guide to when you need a dilapidation report provides a detailed decision framework, and our interactive quiz can give you a quick answer.

The Dilapidation Inspection Process: Step by Step

Understanding what happens during a dilapidation inspection helps you prepare and ensures you get maximum value from the report. Here is the typical process followed by qualified surveyors in Adelaide:

Step 1: Engagement and Scheduling

The process begins when you (or the developer, if council-required) engage a qualified building surveyor. You provide the property address, information about the proposed neighbouring works, and the council reference number if applicable. The surveyor will confirm their availability, quote a fee, and schedule the inspection. For a standard residential property, inspections take between one and three hours.

Step 2: The On-Site Inspection

On the day, the surveyor arrives with a camera, crack gauges, measuring tape, spirit level, and sometimes a laser level or moisture meter. They conduct a methodical, room-by-room walkthrough of the interior, followed by a thorough exterior inspection covering all elevations, the roof line (from ground level or via drone), fencing, retaining walls, driveways, paths, and any ancillary structures such as sheds, pergolas, or swimming pools.

The surveyor notes and photographs every visible defect, no matter how minor. Hairline cracks that you have lived with for years are documented precisely because, if they widen during the adjacent construction, you need proof of their original size. The surveyor also records areas that are in good condition, which protects the builder from false claims.

Step 3: Report Compilation

Back in the office, the surveyor organises the photographs, cross-references them to their written notes, and prepares the report. A typical dilapidation report runs between 30 and 100 pages, depending on the size and condition of the property. Each page contains annotated photographs with corresponding written descriptions.

Step 4: Distribution

The completed report is issued as a PDF, sometimes accompanied by a USB drive or cloud-hosted gallery of full-resolution images. Copies are provided to the property owner, the developer or builder, and (if required) the relevant council. All parties receive the same document.

Step 5: Post-Construction Follow-Up

After the adjacent construction is finished, a second inspection is conducted using the original report as a baseline. The surveyor returns to the property, re-photographs every element that was recorded in the pre-construction report, and compares the two sets of data. Any new damage or worsening of existing conditions is identified and documented. This is covered in detail in our guide to post-construction dilapidation reports.

What Do You Actually Receive?

When you engage a qualified surveyor through our network, you receive a professionally bound (digital) report that includes:

• A cover page with property details, inspection date, and surveyor credentials
• An executive summary highlighting key findings and areas of concern
• A detailed, room-by-room (or elevation-by-elevation) photographic record
• Written descriptions for every photographed element
• Measurements for any significant cracks or damage
• A site orientation plan
• The surveyor's signed declaration of independence and qualifications
• Full-resolution image files (usually via download link or USB)

The report is yours to keep permanently. It serves as your primary evidence if you ever need to make a claim for damage caused by the neighbouring construction. For a visual example, see our sample dilapidation report.

South Australian Legislation and Regulatory Context

Unlike some other Australian states, South Australia does not have a single piece of legislation that mandates dilapidation reports in all circumstances. Instead, the requirement arises from several overlapping sources:

• Planning, Development and Infrastructure Act 2016 (SA):This is the primary planning legislation in South Australia. While it does not specifically mention dilapidation reports by name, the Act empowers councils (now called “relevant authorities”) to impose conditions on development approvals. Requiring a dilapidation survey on neighbouring properties is one of the most common conditions attached to approvals for large-scale or boundary-adjacent developments.
• Building Code of Australia (NCC): The NCC sets the technical requirements for building work across Australia. It includes provisions relating to protection of adjoining properties during excavation and construction, which practically require that the condition of those properties be recorded.
• SA Development Regulations: Various regulations under the PDI Act detail requirements around notifications to neighbours, excavation near boundaries, and the protection of adjoining land, all of which create practical triggers for dilapidation reporting.
• Common law duty of care: Regardless of council conditions, any party undertaking work that could foreseeably damage a neighbouring property owes a duty of care under general negligence law. A dilapidation report is the standard method of documenting the baseline against which any alleged damage is assessed.

The practical effect is that while a dilapidation report may not always be a legal “requirement” in the strictest sense, it is strongly expected by councils, insurers, and the courts whenever significant construction occurs near existing buildings. Failing to obtain one places you at a serious disadvantage if a dispute arises later.

Who Prepares Dilapidation Reports?

Dilapidation reports in Adelaide are prepared by qualified building surveyors, structural engineers, and experienced building inspectors with appropriate qualifications and professional indemnity insurance. The critical factor is independence: the person preparing the report should have no financial connection to the builder, developer, or any party with an interest in the adjacent project. For a full breakdown of the different professionals involved, see our guide to who does dilapidation reports in Adelaide.

We connect Adelaide property owners with qualified, independent surveyors who specialise in dilapidation reporting. Our network includes professionals registered with the Australian Institute of Building Surveyors (AIBS), Engineers Australia, and relevant SA accreditation bodies.

Helpful Tools and Next Steps

Now that you understand what a dilapidation report is, you may want to explore these related resources:

• Pre-Construction Dilapidation Reports— timing, process, and what to expect before the adjacent work begins.
• Dilapidation Report Checklist— a downloadable checklist to help you prepare for your inspection.
• How Much Does a Dilapidation Report Cost in Adelaide?— transparent pricing information for SA property owners.
• Who Does Dilapidation Reports in Adelaide?— understanding qualifications, certifications, and what to look for in a surveyor.