Daylight, sunlight and shadow: organise a neighbour’s concern clearly

Illustrative editorial image of a fictional setting; not application evidence.

A practical way to record light concerns for a planning application in England without turning observations into technical conclusions.

“We will lose light” can describe several different worries. You might be concerned about brightness inside a room, direct sun reaching a window, or a garden area being shaded. Separating those concerns helps you explain the place and effect you want the council to consider.

For this guide, daylight means the natural light reaching a space, including light from the sky. Sunlight means direct light from the sun. Shadow describes an area where an object blocks that direct sun. These working distinctions help organise your notes; they are not a substitute for an assessment method.

Give each concern a location

Begin with the affected place, not a conclusion about the whole property. Write down the room and window for an indoor concern, or identify the patio, seating area or garden section for an outdoor concern.

Then describe how you use that place in ordinary terms. You can say that a window serves a kitchen or that a patio is next to the rear wall. You do not need to include sensitive household information to make the location clear.

Create separate entries if you are concerned about a room and a garden. They may relate to the same proposed extension, but they are not the same observation. This makes it easier to keep the documents and questions for each together.

Describe what you can currently observe

If you take photographs from your own property, record the date, approximate time and viewpoint. Note relevant conditions, such as an overcast sky. Keep the original image beside any labelled copy so that your annotations are easy to distinguish from the photograph.

A picture can explain the current relationship between a window, neighbouring buildings and a garden. A photograph of today’s shadow does not, on its own, demonstrate the shadow of an unbuilt extension or an effect throughout the year.

Avoid presenting a few snapshots as a year-round study. Instead, describe them as observations from the dates and viewpoints recorded. If an image includes people or unnecessary private details, consider a different framing before using it in a public submission.

Connect the concern to the proposal

Locate the proposed feature on the plans. Record its drawing title, number and revision. Look for labelled height and position information, and use only measurements you can identify in the documents. Do not estimate a precise height from the size of a thumbnail.

Write a short bridge between the feature and the affected place. For example: “My concern relates to the proposed rear extension beside the kitchen window shown in my location photograph.” Add the actual references in your own case. This is an illustrative drafting approach, not a finding that any extension causes an unacceptable effect.

If the neighbouring window or garden relationship is missing, list that as a question. A clear information gap is more useful than an invented measurement.

Check for an assessment in the application file

Look through the document list for daylight, sunlight or overshadowing material. If a report is present, note which neighbouring places it addresses, what drawings it uses and whether its stated scope includes your concern. Refer to the page or figure you are asking about.

Camden’s assessment guidance is a local example of a council seeking information about existing and anticipated light conditions and mitigation. Requirements vary with the authority and proposal. This does not mean every neighbouring extension requires the same report.

You can ask the council whether the available information addresses the affected place. Do not treat an unfamiliar calculation as proof of either harm or compliance, and avoid importing a numerical threshold from another council’s guide into your application.

Write an assessment request you can support

Build the paragraph around the place, proposal, available information and remaining question. A factual description might identify a side-facing room window and the proposed wall beside it, then ask for the potential daylight effect to be assessed. A garden concern might identify a seating area and ask how the proposal’s shadow would affect it.

Use separate paragraphs when the questions differ. If a submitted report already discusses the location, acknowledge that report and explain the specific point you would like clarified.

The council’s planning assessment also involves the relevant policies and circumstances. The current National Planning Policy Framework provides national context for England; your authority’s own applicable policies remain important. A personal concern and an assessed planning conclusion are different stages of that process.

About this guide

Educational information for England, not legal advice or a professional daylight, sunlight or planning assessment. It gives no technical thresholds or conclusion about an individual development. Sources checked on 14 October 2026.

NeighbourObjection.co.uk prepares documents from the information provided. The Planning Objection Letter + Document Bundle is £44.99 one-off. Customers review the material and submit it themselves.

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