Imagine a Melbourne homeowner receiving a new set of factory progress photos.
The light steel frame is standing, structural panels are visible and plumbing pipes have been routed through an internal wall. The work looks orderly, so it is tempting to assume the module is ready to be closed up.
That conclusion cannot be made from photographs alone.
The photos create a useful record of visible work. They do not show whether the frame matches the approved drawings, whether the relevant inspection has occurred, whether any direction to fix remains open or whether the plumbing work will be covered by the required practitioner documentation.
What these progress photos show
The supplied August 2026 photos appear to show a factory-assembled light-gauge steel structure before internal wall linings have been installed.
Visible features include:
- wall studs, tracks and roof trusses
- diagonal bracing and sheet materials fixed to wall areas
- framed door and window openings
- internal partitions
- plumbing pipework within a wall cavity
- a steel perimeter or base frame
These observations describe what is visible. They do not identify the steel grade, fastener specification, structural capacity, waterproofing system or final site connection.
The approved architectural drawings, engineering, building permit and practitioner records remain the controlling evidence.
A Victorian small second dwelling still needs a building permit
Planning Victoria defines a small second dwelling as a self-contained home of 60 square metres or less, on the same lot as an existing home.
A planning permit is not required in many ordinary cases, but flooding, environmental controls, lot size and other planning provisions can change the pathway. A building permit is always required.
The broader distinction is explained in the Granny Flat Rules Victoria guide and the Council Approval Guide.
The building permit should identify the approved documents and the mandatory notification stages that apply to the work. The relevant building surveyor, commonly shortened to RBS, determines those applicable stages and lists them on the permit.
Frame inspection and pre-lining review are not automatically the same thing
For construction of a new building, completion of the framework is a prescribed notification stage under Victoria's building system unless the RBS determines that a prescribed stage is not relevant to the work.
The builder must notify the RBS when an applicable mandatory stage is complete. After notification, the builder must not allow the relevant work to be covered until it has been inspected and approved. If the RBS directs the work to stop, no further relevant building work may continue until authorised.
A separate pre-lining or pre-plaster review happens later, after services may have been installed but before internal linings conceal the cavities. Under current Building and Plumbing Commission guidance, this is not automatically a separate mandatory notification stage for every Class 1a project.
The RBS can require additional inspections through the permit or use other inspection powers. A homeowner may also engage an independent building consultant to assess contractual quality. That independent review complements the statutory process. It does not replace the RBS inspection.
This distinction matters because the words "frame inspection" and "pre-plaster inspection" are often used as if they describe one universal checkpoint. The actual inspection schedule is the one recorded for the project.
Progress photos support the record but do not replace inspection
Current BPC guidance says mandatory inspections must be performed in person. Photographs, video, declarations and reports can supplement the RBS, but they cannot replace an in-person mandatory inspection.
That creates an important coordination issue for factory-built or modular work.
If parts of the frame or services will be enclosed before the module reaches the Melbourne property, the project team should agree in advance:
- which work is included in the Victorian building permit
- which inspection stages apply
- where each inspection will take place
- when the RBS must be notified
- what must remain visible until inspection
- which engineering or practitioner records are required
The How We Build page explains why design, approvals, manufacture, site installation and handover need to remain connected.
What should be verified before the walls are closed?
1. The visible work matches the approved design
Room layout, openings, structural panels, bracing locations and service zones should be checked against the permit-approved drawings and engineering.
A photograph may help locate a component. It cannot show whether that component uses the required profile, fastener spacing or connection detail.
2. The frame-stage inspection record is available
Ask whether the applicable frame notification was made, who carried out the inspection on behalf of the RBS and whether the stage was approved.
If a direction to fix was issued, confirm that the required work was completed and reinspected before concealment. Do not rely on a message saying the frame "looks fine".
3. Service installation has not created an undocumented structural change
Pipes, cables and ducts often need to pass through or beside framing. The position of penetrations and supports must remain consistent with the approved structural system and the relevant trade requirements.
Where a change to approved structural work is needed, it should be resolved through the appropriate designer, engineer and permit process rather than improvised inside the wall.
4. Plumbing responsibility and records are clear
Victoria requires a licensed plumber to issue a compliance certificate for prescribed plumbing work, including work above the current value threshold and certain work regardless of value.
The certificate is generally issued when the relevant plumbing work is completed, so it may not exist at the rough-in stage. Before the wall is closed, the homeowner should still know:
- which licensed plumber is responsible
- which classes of plumbing work are involved
- what testing or inspection is required before concealment
- who will receive and retain the final compliance certificate
- whether an as-laid drainage plan or water-authority record is required
The visible red and white pipes in the supplied photos should not be identified or approved from colour alone.
5. Later envelope and insulation work has a checking point
The photos do not show a completed external weatherproofing, insulation or internal lining system.
Before those layers are concealed, the team may need to confirm details such as insulation continuity, condensation management, flashings, service penetrations and the interfaces around openings. The exact requirements depend on the approved design and the applicable NCC pathway.
6. A useful evidence pack is retained
Keep a project-specific record containing:
- the building permit and approved drawing set
- structural engineering and approved revisions
- mandatory inspection records supplied for the project
- directions to fix and evidence of closure, if any
- dated photographs mapped to room or wall locations
- plumbing and other practitioner details
- certificates required for the occupancy permit
Photos become more useful when each image has a date, location and drawing reference. A folder of unlabelled images is much harder to rely on later.
The factory checkpoint still connects back to the land
A compliant module cannot be assessed separately from the property where it will be installed.
The foundation, anchors, drainage, service routes, transport access and final siting must suit the approved Victorian project. Easements, slope, flooding, trees and restricted side access can also change the design or installation method.
Reviewing the Land Eligibility Check and the Granny Flat Cost Victoria guide before manufacture is locked in can reduce late design and budget changes.
Questions to ask before approving wall linings
- Which approved drawing revision is the factory using?
- What mandatory inspections are listed on the building permit?
- Has the applicable frame inspection been completed in person?
- Are any directions to fix or engineering queries still open?
- Who is responsible for the plumbing work and final compliance certificate?
- What additional inspection or quality review is planned before lining?
- Which photos and certificates will be included in the handover record?
A clear answer should identify a document, practitioner or inspection record. "This is how we normally build it" is not project-specific evidence.
Check the property before the construction method is locked in
The supplied photos show why the pre-lining stage is valuable: the frame and services are still visible. They also show why appearance alone is not enough.
MPLUS can first review the address for obvious planning controls, usable space, access and site constraints. Check My Land before committing a modular design or manufacturing sequence to a property that has not been assessed.
