Obtrusive Lighting Impact Assessments
Independent obtrusive lighting audits for planning permits, council submissions and post-installation audits.
Why obtrusive light becomes a compliance issue
Obtrusive light is light that falls outside the area it’s meant to illuminate – spilling over a boundary, glaring into a window, or washing into the night sky. AS/NZS 4282 sets limits on how much of this is acceptable, based on the environmental zone a site sits in.
Planning permits increasingly carry a condition requiring compliance to be demonstrated – before installation, after it, or both. An assessment shows a certifier or council exactly where a design sits against the standard, in numbers they can sign off on.
Limits depend on where the site sits
Every AS/NZS 4282 assessment starts by establishing the correct environmental zone – it determines every limit that follows.
ZONE A0
Intrinsically Dark
Curfew limit: [0 lux]
ZONE A1
Dark
Curfew limit: [0.1 lux]
ZONE A2
Low brightness
Curfew limit: [1 lux]
ZONE A3
Medium brightness
Curfew limit: [2 lux]
ZONE A4
High brightness
Curfew limit: [5 lux]
How an assessment runs
01
Site & context review
02
Testing or modelling
03
Report & submission
Independent, and built on experience
CREDENTIALS
MIES · IALD · ADSA
INDEPENDENCE
Design & test only
STANDING
Expert witness
COVERAGE
Melbourne & VIC
Public Areas
DIGITAL Signage
Residential
Commercial
What is AS/NZS 4282:2023?
AS/NZS 4282:2023 is the Australian Standard controlling obtrusive light – spill light, glare, sky glow and light trespass affecting neighbouring properties, roads and the night environment. Compliance is required by councils, planning authorities across Victoria and NSW for a wide range of development types.
If your planning permit includes a condition requiring an obtrusive lighting assessment or lighting impact assessment, AS/NZS 4282:2023 is the standard your report must address.
When is an AS 4282 Assessment Required?
Planning authorities require AS/NZS 4282 assessment for:
Projects Near Sensitive Habitat
Where development sites are adjacent to bushland, wildlife corridors, wetlands or coastal areas, obtrusive lighting assessments may also need to address the National Light Pollution Guidelines for Wildlife (NLPGW, DCCEEW 2023). The NLPGW sit alongside AS 4282 as the two frameworks planning authorities increasingly require to be addressed together – AS 4282 covering amenity and human receptor impacts, the NLPGW covering ecological impacts.
We incorporate NLPGW considerations into our assessments where relevant, including spectral analysis, spill light modelling near habitat boundaries, and lighting management plan recommendations addressing timing, dimming and CCT specification.
Frequently asked questions
Where we work
Greater Melbourne & VIC (Interstate projects available on request).
AS/NZS 4282 Obtrusive Lighting Testing Services Across Melbourne and Victoria
Spaces At Night provides independent testing across Melbourne and regional Victoria. Our lighting consultants regularly conduct compliance testing for sports facilities, public lighting installations, commercial developments and illuminated signage projects requiring Australian Standards verification.
Common service locations include:
• Melbourne
• Geelong
• Ballarat
• Bendigo
• Shepparton
• Gippsland
• Mornington Peninsula
Most AS 4282 assessments can be scoped and quoted within one business day. To get a proposal, we need:
- The site address and type of lighting installation
- Whether assessment is pre- or post-installation
- Any specific permit conditions or council requirements
Related Lighting Compliance Services
Related Reading:
Find out how lux testing is applied specifically to sporting facilities in our article Sports Lighting Lux Testing & Auditing. It covers compliance with AS/NZS 2560.2, common issues, and how professional auditing can improve player safety and performance.