Environment & amenity

Daylight and Sunlight Assessments

Evidence assessing daylight and sunlight considerations for the proposal and its neighbours.

When this service may be useful

Daylight and sunlight evidence is useful where building changes could affect neighbouring accommodation or where the proposal’s own amenity needs to be tested. Reliable geometry and an agreed assessment scope are essential.

How the work is approached

Specialist assessment uses the supplied drawings or model and relevant surrounding context to test the agreed receptors and spaces. The report explains methods, assumptions, results and the implications for the proposal, with design options considered where instructed.

What you receive

You receive the agreed assessment and supporting results. Revised geometry or additional scenarios can require a further assessment, so the design version and surrounding information must be established at the outset.

What we need to start

Accurate drawings or a model, surrounding context and proposed use.

We review the site, proposal and planning stage to agree the appropriate scope. Specialist surveys and assessments are coordinated where needed.

How our planning consultancy process works

ILLUSTRATIVE REPORT PREVIEW

Daylight & Sunlight Assessment

Front cover and contents page examples. The document structure is tailored to your instruction, site and relevant planning requirements.

Daylight & Sunlight Assessment illustrative front cover
Front cover
Daylight & Sunlight Assessment illustrative contents page
Contents page

What the report should contain

This outline explains the purpose of each section. The final contents depend on the agreed scope, available evidence and requirements of the local planning authority.

  1. Document control & executive summary

    Project details, reference, revision, date, author, reviewer and a concise summary of the key findings.

  2. Site, proposal & assessment scope

    Identify neighbouring and proposed receptors included in the study.

  3. Methodology & assessment criteria

    Explain relevant guidance, metrics and interpretation.

  4. Geometry, inputs & limitations

    Document model sources, window assumptions and missing information.

  5. Neighbouring daylight

    Present baseline and proposed results for relevant windows and rooms.

  6. Neighbouring sunlight

    Assess relevant sunlit windows with baseline and proposed comparisons.

  7. Overshadowing of amenity spaces

    Assess relevant gardens or other external spaces where scoped.

  8. Internal daylight & sunlight

    Assess proposed accommodation where included and relevant.

  9. Results, context & mitigation

    Explain departures, design responses and conclusions without treating guidance as automatic pass/fail.

  10. Appendices & evidence register

    Index relevant plans, photographs, calculations, surveys and source documents; include only the evidence relevant to this instruction.

Read our planning supporting documents guide to explore related evidence.

CASE STUDIES

Where we have prepared this report

All case studies

YOUR QUESTIONS ANSWERED

Daylight & sunlight assessments FAQs

Clear answers to help you plan your next step.

Still have a question?

Tell us about the site and we will confirm what is needed and what it should cost.

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What happens if the building geometry changes?

Changes to height, massing, windows or surrounding information may affect the assessment results. We review the revised geometry and agree whether an updated model or further assessment is needed.

What information should I provide to get started?

Accurate drawings or a model, surrounding context and proposed use.

How is the fee for this service confirmed?

The price shown is a starting estimate for the stated scope. We review the site, proposal, available information and required deliverables, then confirm the fee, exclusions and programme in a written quotation before appointment.

How do your specialists work together on a project?

We bring the relevant planning consultants and specialist providers into a coordinated project team. They work from an agreed brief and current proposal, with dependencies and design changes discussed across disciplines. Each consultant remains responsible for their own professional advice and agreed deliverables.

PART OF A COORDINATED APPOINTMENT

Your specialist evidence, connected.

This service can form part of a wider coordinated planning appointment. We bring the relevant consultants together to work alongside your design team, discuss assessment findings and identify how recommendations affect other reports and the proposal.

Your fee proposal confirms who prepares each document, the information it relies on and the limits of the instruction. A report provides evidence for the council’s assessment; the planning decision remains the council’s. Explore how our consultants work together or discuss the team your project needs.

YOUR NEXT STEP

Discuss your requirements.

Tell us about the site, what you want to achieve and any deadline. We will review it and suggest an appropriate next step.

Call 020 8004 4464 or email info@greencodeconsultants.com.

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