SketchUp Extension · for MacOS and Windows

Optimize the daylighting comfort
of your projects in a few clicks.

DL-Light gives architects and engineers precise daylighting metrics for residential, commercial, and urban projects — right inside your SketchUp model.

⬇ Download Free Evaluation Buy a License
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Compatible with
LEED
BREEAM
EN 17037
SEPP65
Rights of Light
Estidama
Mostadam
Validated CIE 171:2006
Why DL-Light

Everything you need,
inside SketchUp

No model rebuilding, no separate software. Get professional-grade daylighting analysis without leaving your workflow.

☀️

Accurate Physics

Powered by the Radiance ray-tracing engine, validated against CIE 171:2006 for trustworthy compliance reports.

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Fast, Native Workflow

Calculate directly on your SketchUp model. No export, no rebuild — results appear color-coded on your geometry directly.

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Comprehensive Reports

Interactive on-model reports plus spreadsheet exports ready for LEED, BREEAM, EN17037, and SEPP65 submissions.

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Indoor & Urban Metrics

From Daylight Factor and Autonomy to Sky View Factor and Solar Exposure — 27 metrics to study all aspects of your project.

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Archive & Compare

Save and revisit past simulations. Compare design variants side-by-side to pick the best-performing option.

🖥️

Mac & Windows

Full support for both operating systems. Try the evaluation version free — no time limit, no credit card required.

27 Metrics

Indoor & outdoor metrics
in a single tool

All the metrics you need for compliance, comfort, and design decisions.

Outdoor and urban metrics

Outdoor & Urban Metrics

  • Direct sun exposure
  • Incident solar energy (Watt)
  • Sky View Factor
  • Horizontal Sight Angle
  • Solar & shade analysis
  • . . .
Indoor metrics

Indoor Metrics

  • Daylight Factor (DF, avg, median)
  • Luminous Autonomy (DA, sDA, UDI)
  • No Sky Line
  • Illuminance (Lux)
  • EN 17037 & BREEAM compliance
  • . . .
Explore all 27 metrics →
Results

Graphical, interactive,
and exportable results

Communicate findings clearly to clients and planners with compelling visual outputs.

Graphical results

Graphical results inside SketchUp

Color-coded surfaces displayed directly on your model, with matching numerical reports.

Interactive report

Interactive report

Click any surface to see its value. Spot underperforming areas and iterate design decisions faster.

Spreadsheet export

Direct spreadsheet export

Export all data to spreadsheets for custom calculations, compliance summaries, and client deliverables.

See how results work →
Reviews

Trusted by daylighting
professionals

From architectural firms to urban consultants — here is what our users say.

★★★★★

"DL-Light represents a step change improvement in the assessment of natural light. Combining the power and credibility of the Radiance daylight simulation engine with the convenience and speed of the SketchUp modelling environment."

Rory Walsh — Principal Daylight Consultant
BPG3, Ireland
★★★★★

"We have been using DL-Light for a number of years on both Architectural and Urban Design projects. DL-Light is intuitive, accurate and graphically customisable. The support from the DL-Light team has been outstanding."

Alexander Koll
MAKO Architecture, Australia
★★★★★

"QODA use DL-Light regularly for early site planning and massing studies. The speed and responsiveness are incredibly helpful. The ability to present studies visually and in 3D is highly valued by our engineers and architects."

Joel Callow — Technical Director
QODA Consulting, England
DL-Light validation
Scientific Validation

Validated against
CIE 171:2006

🏅 International Commission on Illumination — CIE 171:2006

DL-Light was rigorously tested following the CIE 171:2006 test cases — the international benchmark for daylighting simulation software. That validation gives engineers and certifiers the confidence to use DL-Light results directly in LEED, BREEAM, and EN17037 submissions.

Read the validation report →

Ready to bring daylighting
into your workflow?

Start free. Upgrade when you need the full power.

⬇️

Free Evaluation

Download the full software with no time limit. Experience every metric and report at no cost — no credit card required.

Download Free
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Full License

Unlock all modules, unlimited projects, and priority support. Yearly and perpetual licenses available for individuals and teams.

Buy a License →