Documents Needed for a Section J Report

For most commercial building projects, the first step is a practical review of the available drawings, schedules and design information. These documents help the assessor understand the building classification, envelope, glazing, construction systems and relevant building services.

The documentation does not always need to be final before an initial review begins. It does, however, need to be clear enough to identify the building, the proposed work and the likely energy-efficiency compliance pathway.

The more useful question is therefore:

Which documents are needed now, and which details must be confirmed before the Section J Report can be finalised?

The information commonly needed for a Section J review includes:

• the project address, jurisdiction and intended building use;
• the proposed NCC building classification, if known;
• architectural floor plans, elevations and sections;
• roof plans and relevant reflected ceiling plans;
• wall, roof and floor construction information;
• insulation specifications and envelope boundaries;
• window, glazed-door and façade information;
• glazing performance values and shading details;
• building-sealing information;
• lighting layouts, fixture schedules and controls;
• air-conditioning and ventilation information;
• heated-water, metering and other services information where relevant;
• existing Section J documentation for alterations or fit-outs; and
• any certifier or building-surveyor correspondence affecting the assessment scope.

For an early pathway review, plans, elevations, sections and basic construction information may be enough to identify the likely next step.

For a final report, the relevant architectural and services documentation should be sufficiently developed, coordinated and consistent with the design intended for approval and construction.

Drawings are easier to interpret when they are accompanied by a clear description of the project and its approval context.

Useful starting information includes:

• project address and state or territory;
• existing and proposed building use;
• proposed building classification, if confirmed;
• whether the project is a new building, extension, fit-out, refurbishment or change of use;
• approximate floor area and number of storeys;
• the current design or approval stage;
• the applicable NCC edition, if already confirmed;
• the expected approval or submission date;
• the appointed certifier or building surveyor, where known; and
• any specific compliance scope already requested by the approval authority.

This information helps distinguish a full new-building assessment from a limited tenancy, lighting or alteration scope.

Where the applicability of Section J is still uncertain, read When Does Section J Apply?

Architectural drawings establish the building geometry, room uses, envelope boundaries, openings and relationship between conditioned and unconditioned areas.

The most useful architectural documents are generally:

• site plan showing orientation;
• floor plans for each relevant level;
• external elevations;
• building sections;
• roof plan;
• reflected ceiling plans where lighting or ceiling zones are relevant;
• room-use or area schedules;
• door and window schedules;
• wall, roof and floor type references;
• demolition drawings for existing-building projects; and
• relevant architectural details and specifications.

Floor plans help identify room functions, tenancy areas, circulation spaces, floor areas and conditioned zones. Elevations show the location and extent of external walls, glazing, doors and shading. Sections clarify roof forms, floor relationships, ceiling heights and vertical connections between spaces.

The drawings should use consistent window tags, wall types, room names and area boundaries. Differences between plans, elevations and schedules can lead to clarification requests or incorrect assumptions.

A complete construction set may not be necessary for an early review, but the supplied drawings should represent the same design revision.

The assessor needs to understand how the building envelope is intended to be constructed and where it separates conditioned spaces from external or unconditioned areas.

Relevant construction information may include:

• external wall build-ups;
• roof and ceiling systems;
• ground and suspended floor construction;
• internal walls separating conditioned and unconditioned spaces;
• insulation type, location and nominal R-value;
• cavities, framing and cladding systems;
• concrete, masonry, lightweight and composite construction;
• roof lights and other envelope openings;
• thermal breaks or continuity measures where relevant;
• external doors and sealing provisions; and
• junction or penetration details that materially affect the envelope.

A schedule stating an insulation value is useful only when the corresponding wall, roof or floor build-up is also identifiable. The project team should confirm that the nominated insulation can be accommodated within the proposed construction system.

At an early stage, provisional construction assumptions may be used to test the likely pathway. These assumptions should be clearly identified and confirmed before the report is treated as final.

For further guidance on coordinating the envelope, read Meeting Section J Compliance: Building Fabric and Glazing.

Glazing can have a significant influence on the Section J assessment, particularly where a building has large glazed areas, multiple orientations or complex shading conditions.

Useful glazing and façade information includes:

• window and glazed-door tags;
• opening dimensions or scheduled areas;
• the façade orientation of each opening;
• frame type and framing system;
• the complete-system U-value;
• the complete-system Solar Heat Gain Coefficient, or SHGC;
• glass descriptions where already selected;
• external shading dimensions and projections;
• eaves, awnings, screens and façade fins;
• curtain-wall and shopfront systems;
• spandrel or opaque façade zones; and
• roof lights or other overhead glazing.

The performance values should relate to the complete window or glazed-door system, including the frame, rather than the centre-of-glass performance alone.

For an early review, the exact glazing product may not yet be selected. Preliminary system values or a clearly described proposed glazing type may be sufficient to identify likely risk areas.

Before the report is finalised, the glazing schedule, elevations and nominated performance values should describe the same openings and system selections.

Building sealing addresses uncontrolled air leakage through parts of the envelope and relevant openings.

The necessary information may be shown through drawings, details or specification notes covering:

• external door seals and closers;
• weather-stripping to operable windows;
• sealing around service penetrations;
• treatment of exhaust fans and dampers;
• construction joints and envelope junctions;
• entry lobbies or other relevant entrance arrangements; and
• continuity of sealing around conditioned spaces.

The required level of documentation depends on the project, but the final drawings or specifications should clearly communicate the measures relied upon for compliance.

Where artificial lighting forms part of the assessment scope, the assessor needs enough information to understand the proposed installed load and control strategy.

Relevant information may include:

• lighting layouts or reflected ceiling plans;
• luminaire references and fixture schedules;
• fixture wattages, including associated control gear where applicable;
• room or area uses;
• switching and control zones;
• occupancy or motion controls;
• daylight-responsive controls;
• dimming arrangements;
• display, decorative or specialist lighting where relevant;
• external lighting included within the project scope; and
• electrical metering or energy-monitoring information where applicable.

Lighting information is often developed after the initial architectural review. Where the final layout is not yet available, the assessment may rely on preliminary allowances that need to be checked once the lighting design is coordinated.

Where the confirmed compliance scope is limited to artificial lighting and controls, a focused Section J Express Lighting Assessment may be appropriate.

Mechanical information may be required where the project includes air-conditioning, heating, ventilation, exhaust or associated control systems.

Depending on the design stage and project scope, useful information may include:

• the proposed HVAC system type;
• mechanical layouts and zoning;
• equipment schedules and efficiencies;
• heating and cooling capacities;
• ventilation and outdoor-air strategy;
• exhaust systems;
• fan and pump information where relevant;
• ductwork and pipework insulation;
• thermostats, timers and control sequences;
• conditioned and unconditioned area boundaries; and
• coordination between mechanical and architectural drawings.

A complete mechanical design may not be available during an early review. The likely system type, conditioned areas and ventilation strategy should still be identified where possible.

If the services design changes after the assessment is prepared, the report may need to be reviewed to confirm that its assumptions and recommendations remain valid.

Additional services information may be needed where those systems fall within the applicable project scope.

This can include information relating to:

• heated-water system type and plant location;
• electric, gas, heat-pump or solar-boosted systems;
• circulation systems and associated insulation;
• swimming-pool or spa-pool plant where applicable;
• main electrical metering and sub-metering;
• separate tenancy metering;
• monitoring of major building systems;
• distributed-energy infrastructure;
• renewable-energy systems where relevant; and
• other services specifically identified by the project team or certifier.

Not every project requires the same level of services documentation. A small fit-out, warehouse and large mixed-use development will each have different information requirements.

Starting early does not mean issuing a final report against an unfinished design. It allows the project team to identify the likely pathway and resolve major risks before the documentation becomes fixed.

Existing-building, refurbishment and tenancy projects need a clear distinction between retained conditions and proposed new work.

Useful additional documents may include:

• existing-building drawings;
• demolition plans;
• a written scope of works;
• proposed fit-out plans;
• existing and proposed room uses;
• change-of-use or classification information;
• base-building Section J Reports;
• existing glazing and façade information;
• existing mechanical and lighting documentation;
• landlord and tenant responsibility schedules;
• details of services being retained, altered or replaced; and
• certifier correspondence defining the compliance scope.

An existing Section J Report can provide useful background, but it should not automatically be assumed to cover the new work. It may relate to a previous tenancy, different layout or earlier services design.

The project team should clearly identify which information represents existing conditions and which drawings describe the proposed design.

Incomplete information does not always prevent an assessment from beginning. It can, however, affect accuracy, timing and the number of revisions required.

Where important information is missing, the assessor may need to:

• request clarification from the project team;
• adopt provisional assumptions;
• identify exclusions from the current assessment;
• provide conditional recommendations;
• nominate minimum performance requirements;
• delay parts of the assessment until services information is available; or
• revise the report once the design is updated.

Assumptions should be visible and understood by the project team. They should not become accidental specifications simply because no alternative information was supplied.

Changes to geometry, glazing, construction systems, conditioned areas, lighting or mechanical services may require the assessment to be reviewed.

Clear document control can reduce clarification requests, repeated assessment work and inconsistencies between the report and drawings.

1. Issue one coordinated drawing set. Avoid combining isolated pages from different design revisions.
2. Use clear revision numbers and dates. The assessor should be able to identify which documents are current.
3. Identify what has changed. Highlight revisions to floor areas, glazing, construction systems, lighting or services.
4. Separate existing and proposed work. This is particularly important for alterations, refurbishments and fit-outs.
5. Nominate one project contact. Consolidated responses can reduce conflicting information from different team members.
6. Flag provisional selections. Identify products, values and systems that are not yet confirmed.
7. Provide readable schedules. Glazing, lighting and construction schedules should be legible and linked clearly to the drawings.
8. Include relevant certifier correspondence. Scope decisions and approval requirements should be visible to the assessor.
9. Reissue documents after material design changes. The final report should correspond with the design intended for approval and construction.

A JV3 assessment generally requires more detailed and stable modelling inputs than an initial Deemed-to-Satisfy review.

This may include detailed information about:

• building geometry and orientation;
• conditioned zones and space uses;
• construction assemblies;
• glazing and shading;
• occupancy and operating assumptions;
• lighting loads;
• mechanical systems; and
• other inputs required by the applicable modelling method.

The decision to consider JV3 should not be based only on the quantity of available documents. It depends on the building design, compliance constraints and approval strategy.

For the full pathway comparison, read Section J DTS vs JV3: Which Pathway Suits Your Project?

Can a Section J assessment begin before the drawings are final?

Yes. Current plans, elevations, sections and preliminary construction information may be enough for an early pathway review. The relevant details should be confirmed before the final report is issued.

Is a glazing schedule always required?

A formal schedule may not be available at concept stage, but the assessor still needs enough information to identify opening sizes, orientations, frame types and proposed performance. A coordinated glazing schedule is generally preferable for a final assessment.

Are mechanical drawings needed for every Section J Report?

Not always in the same level of detail. The required information depends on the project scope and which services provisions need to be addressed. The likely HVAC and ventilation strategy should still be identified where relevant.

What should be provided for a commercial fit-out?

Provide the proposed fit-out plans, scope of works, available base-building documentation, lighting and mechanical information, existing glazing details and clarification of landlord and tenant responsibilities.

What if existing-building drawings are unavailable?

The project team may need to document the existing conditions through measured drawings, site information, photographs or consultant investigations. The appropriate approach depends on the alteration scope and certifier requirements.

Can a Section J Report be updated after the design changes?

Yes, but changes to geometry, glazing, construction systems, conditioned areas, lighting or services may require recalculation and revised documentation. Material changes should be provided to the assessor before approval or construction.

Are exact product names required?

Not always for an early review. Performance values and complete construction descriptions may be sufficient at that stage. Final documentation should provide enough information to ensure the specified or substituted products achieve the assessed performance.

Does JV3 require more information than DTS?

JV3 generally requires more detailed modelling inputs and coordination because the proposed building is assessed through comparative simulation. The exact information depends on the modelling scope and applicable approval requirements.