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Dark Skies, start with us
Lighting Impact Assessment (LIA)
Securing Planning Approval Through Rigorous Technical Compliance and Ecological Protection
Navigating local authority planning constraints can stall even the best architectural designs. Whether you are dealing with pre-commencement planning conditions, ecological sensitivities near protected habitats, or stringent dark-sky regulations, our specialised Lighting Impact Assessments (LIA) provide the rigorous data and compliance reporting needed to secure sign-off.
As an independent technical lighting consultancy, we deliver product-neutral, highly accurate lighting assessments that protect local ecosystems while satisfying statutory requirements.
Why a Lighting Impact Assessment Is Critical
Local planning authorities (LPAs) increasingly enforce strict conditions regarding artificial light glare, upward light spill, and ecological disruption. Without a professional assessment, developments risk costly delays, enforcement notices, or outright planning refusals.
Our assessments bridge the gap between architectural ambition and regulatory compliance by evaluating:
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Obtrusive Light & Sky Glow: Calculating upward light ratios and glare ratings in strict accordance with DarkSky International guidelines and ILP recommendations.
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Boundary Spill & Intrusion: Measuring exact lux levels at residential and commercial boundaries to ensure compliance with environmental nuisance thresholds.
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Ecological Mitigation: Assessing light trespass on sensitive foraging and commuting corridors for protected species such as bats and Great Crested Newts.
Our Comprehensive Lighting Impact Assessment Deliverables
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Baseline Survey & Environmental Context Audit: Reviewing existing site conditions, local zoning requirements, and environmental zone classifications (E1 through E4).
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Advanced Computer Modelling: Utilising industry-standard design tools (such as DIALux and Relux) to generate precise 3D lux contour maps and point-by-point calculation grids.
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Regulatory Compliance Verification: Assessing installations against ILP GN01 (Guidance Notes for the Reduction of Obtrusive Light), BS EN 12464-2, and local development plan policies.
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Mitigation Strategy & Optimisation: Recommending precise luminaire positioning, optical shielding, CCT (Correlated Colour Temperature) adjustments, and smart curfew controls to eliminate ecological and neighbour impacts.
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Formal Planning Report: A fully formatted, professional technical report ready for direct submission to the local authority to discharge planning conditions.
Who We Help
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Architects & Masterplanners: Needing reliable technical partners to integrate compliant lighting into complex masterplans.
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Property Developers: Seeking to discharge stubborn planning conditions quickly to maintain construction timelines.
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Ecological Consultants: Requiring quantified light level data to pair with protected species mitigation licenses.
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Commercial & Industrial Operators: Upgrading or expanding facilities while managing boundary spill and neighbour relations.
Ready to Secure Your Planning Approval?
Eliminate guesswork and keep your project moving forward with an expert-led Lighting Impact Assessment.
Upload Your Site Plans for a Rapid Review
Send us your architectural drawings, site layout, or planning condition notice, and we will provide a clear, fixed-fee proposal.
Prefer to speak directly?
Contact our technical design team to discuss your planning condition first: