Building Performance

Keep the layout. Fix the light.

When council flags your development for failing the daylight test, a full redesign shouldn't be your only option. Makao's daylight modelling identifies exactly what's failing — and exactly what it takes to fix it.

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WELL
NCC Part F6
BESS IEQ Daylight Credits
Green Star Light Quality
Residential, Commercial, Mixed Use

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Send us your plans. We'll confirm scope, cost, and turnaround within 24 hours.

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[What is daylight modelling?]

The assessment that tells you exactly where your light is going — and what to do about it.

Daylight modelling is a 3D simulation of how natural light enters and distributes through a building. Using radiance-based software and real Australian climate data for your site location, we calculate daylight levels room by room — giving you quantified evidence of compliance rather than an educated guess.

For Class 2, 3, and 9 buildings, the NCC requires habitable rooms to achieve an Average Daylight Factor of 2%. BESS and Green Star have their own daylight metrics. A daylight model produces the specific outputs each framework requires — in a format councils, certifiers, and rating tool administrators accept.

The geometry built for a daylight model can often be reused for JV3 thermal modelling. If you engage Makao for both services, you avoid building the model twice and reduce your overall consulting cost.

Compliance Assessment

A full room-by-room assessment against wELL, NCC Part F6, BESS IEQ, or Green Star Light Quality criteria. Identifies compliant and non-compliant areas with clear reference to the relevant standard.

Design Advisory

Where rooms are marginal or failing, we flag specific interventions — window repositioning, glazing specification changes, or layout adjustments — before the report is finalised. Fixes identified early cost far less than permit conditions.

[When do you need daylight modelling?]

Sound familiar? You probably need a daylight model.

Daylight modelling gets flagged at different stages for different reasons. These are the situations we see most often.

"The certifier says our apartments don't meet the NCC daylight requirement. We're lodging in three weeks."

NCC Part F6 compliance — the most common trigger for Class 2 and 3 buildings. We model the building, identify which rooms are failing, and flag design interventions before the report is finalised. Turnaround confirmed at quote stage.

"Our BESS IEQ score isn't where it needs to be. The in-built calculator only works for simple rooms."

BESS daylight access credits — the built-in BESS calculator only works reliably for single-aspect rooms. Multi-aspect layouts, corner apartments, and rooms with neighbouring obstructions need full modelling to demonstrate compliance accurately.

"We're targeting Green Star and need to demonstrate Light Quality credit achievement with sDA data."

Green Star Light Quality — uses Spatial Daylight Autonomy, a dynamic annual metric that can't be demonstrated with simple calculations. We model against real climate data for your site and produce outputs formatted for your Green Star submission.

"Council says our design fails the ResCode daylight test. We think the envelope comparison tells a different story."

ResCODE non-compliance argument — we compare your proposed design directly against the ResCode standard envelope. If your non-complying design performs no worse, the modelling gives your planning argument the technical legs it needs at VCAT.

"The architect specified full-height glazing but the daylight numbers still aren't meeting the requirement."

Glazing that isn't performing — bigger windows don't always mean better daylight. Orientation, external shading, and inter-reflectance all affect the result. We identify whether the issue is window size, placement, glass specification, or something structural before you start redesigning.

"The bedrooms are at the back of the floor plate with no direct external window. Can borrowed light work here?"

Deep floor plates and borrowed light — borrowed light through internal glazing or highlight windows can work, but only if the geometry supports it. We model the actual light path through your floor plan to determine whether the arrangement achieves the required daylight factor, or whether the layout needs to change.

"We're building on a tight urban site and the neighbouring building is blocking most of the northern sky."

Tight sites with neighbouring obstructions — sky view factor matters more than raw window area on constrained sites. We model the actual obstruction profile of surrounding buildings, not just the site boundary, so you get a realistic picture of what's achievable before you lock the design.

"The passive design needs deep balconies for shading, but they're cutting into the daylight. We can't satisfy both."

Balcony depth versus daylight — shading and daylight performance are often in direct tension. We quantify exactly how much a proposed overhang or balcony depth reduces daylight levels, so you can find the configuration that works for both thermal comfort and NCC compliance.

"The layout changed in DD and nobody flagged the daylight implications. Building permit is four weeks away."

Late-stage design changes — it happens. If a floor plan revision has introduced rooms that are now marginal on daylight, we can fast-track the modelling and flag what's fixable before it becomes a condition of approval or, worse, a reason for refusal.

[How it works]

From drawings to report in days, not weeks.

Send us your plans

Architectural drawings, site location, project brief, and any correspondence from the relevant authority. We'll confirm scope and turnaround within one business day.

01

We build the model

Using radiance-based software, we model your building geometry against real Australian climate data for your specific site location.

02

We run the simulation

The model tests daylight performance across all nominated rooms. Where results are marginal, we flag specific design interventions before the report is finalised.

03

You submit

A clear, referenced daylight modelling report suitable for submission to council, your certifier, or a VCAT hearing. Written in plain English, with annotated floor plan outputs.

04

Frequently asked questions

Do I need daylight modelling or a daylight assessment?

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The terms are often used interchangeably. A daylight assessment typically refers to a simpler calculation-based approach; daylight modelling uses 3D simulation software. For complex multi-unit developments, council and certifiers increasingly require full modelling rather than simplified calculations.

Which building classes require daylight modelling?

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NCC Part F6 applies to Class 2, 3, 4 (residential parts), 9a, 9b, and 9c buildings. Class 5–8 commercial buildings have no mandatory daylight requirement under the NCC, though Green Star and NABERS ratings may require it.

How long does a daylight modelling report take?

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Typically 5–10 business days from receipt of complete architectural plans. We'll confirm turnaround at quote stage based on project complexity. If you have a hard deadline, tell us upfront.

Can the daylight model data be reused for JV3 thermal modelling?

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Yes — the building geometry developed for daylight modelling can often be extended for JV3 thermal compliance modelling, reducing your overall consulting cost and turnaround time when both services are engaged together.

What software do you use?

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We use radiance-based simulation tools, which are accepted by councils, certifiers, and rating tool administrators across Australia.

What do I need to provide to get started?

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Architectural drawings (PDF is fine), your site address, and any council or certifier correspondence flagging the daylight issue. We handle everything else from there. Once started, we may ask for additional details e.g. materials schedules and internal finishes.

Can you help if we're already in dispute with council or at VCAT?

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Yes. Daylight modelling reports can be prepared as expert evidence for VCAT hearings or to support a planning appeal. We'll structure the report appropriately for the forum and can liaise with your planning consultant on the technical framing.

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