A proposal can change light without creating unacceptable harm. It can also create harmful enclosure even where a light objection is not established. These nine historical examples compare the evidence behind those different findings.

Eight records reuse earlier NeighbourObjection research, including three previously reserved leads now completed for this light-focused comparison. One additional case fills the communal-garden evidence gap. Existing summaries elsewhere remain in place; this resource brings the light questions together rather than presenting all nine as newly discovered decisions.

These decisions concern particular sites, proposals, procedures and evidence. They are illustrations, not precedents or predictions. None establishes that a neighbour's objection caused the outcome. All predate the August 2026 national framework. Local policy references in the originals are historical, not confirmation of current local policy.

1. A noticeable reduction was acceptable in its setting

South Hams. A roof extension was allowed with conditions. The Inspector considered the daylight assessment, the affected rooms and their other windows. A noticeable reduction did not amount to significant harm to living conditions. Earlier unsuccessful schemes and site levels were part of the context; this was not a finding that there would be no loss of light.

Appeal APP/K1128/W/22/3298629; application 1704/21/HHO; decision 2022-10-11. Read the original decision. Reasoning: pp1-3 paras3-13;pp4-7 paras19-28 and schedule7-9.

2. Urban flexibility did not remove severe harm

Bromley. A large mixed-use scheme was dismissed. The Inspector considered technical daylight tests flexibly in its town-centre setting but found severe effects on single-aspect homes. Cumulative garden sunlight effects and enclosing outlook also mattered. This was a much larger proposal than a house extension, with several issues in the overall balance.

Appeal APP/G5180/W/24/3340223; application DC/21/05585/FULL1; decision 2024-10-01. Read the original decision. Reasoning: pp6-8 paras25-38;pp12-13 paras65-69;para1.

3. An affected room could not be confidently identified

Camden. A mixed-use reconstruction appeal was dismissed on several grounds. A report identified a particular affected window, but whether it served a habitable room remained unclear. The Inspector could not be satisfied about the daylight effect. A proposed compensation approach lacked demonstrated mitigation. The lesson is to identify the room and the gap, not to assume that any missing information requires refusal.

Appeal APP/X5210/W/24/3356020; application 2024/3892/P; decision 2025-04-03. Read the original decision. Reasoning: p3 paras12-14;p4 para18;p5 paras25-26.

4. A replacement could be assessed without a detailed report

Enfield. A rear extension was allowed with conditions. Its existing footprint, replacement relationship and the neighbours' retained open garden aspects supported acceptable light and outlook. The Inspector considered the absence of technical evidence. This does not create a report exemption for other sites or remove the need to check local policy.

Appeal APP/Q5300/D/25/3368834; application 25/01188/HOU; decision 2025-09-03. Read the original decision. Reasoning: pp1-2 paras3-10;para1 conditions1-3.

5. Light uncertainty did not prevent an outlook finding

Wandsworth. A roof addition was dismissed because it would oppressively enclose a bedroom window. The Inspector was not certain that the evidence established daylight or sunlight harm. Outlook was sufficient to dismiss the appeal. Do not turn that outcome into a finding of proven light loss.

Appeal APP/H5960/W/24/3343540; application 2023/4695; decision 2025-11-14. Read the original decision. Reasoning: pp1-2 paras3-11;especially6-9.

6. Acceptable light did not settle enclosure

Cheshire West and Chester. A first-floor extension beside a habitable room was dismissed. The light effect was acceptable, but the wall's enclosing relationship harmed outlook. Its character effect was acceptable too. Identify the separate effect supported by the evidence rather than treating all the disputed concerns as upheld.

Appeal APP/A0665/D/24/3343304; application 23/03650/FUL; decision 2024-07-25. Read the original decision. Reasoning: pp1-2 paras3-7;other issues8-13.

7. An extra storey created shadow without unacceptable harm

Leeds. An additional storey to a bungalow received Class AA prior approval on appeal. The Inspector considered the neighbouring home's front and rear living-room windows, separation and levels. More shadow did not establish significant harm. This was a statutory prior-approval route with a defined scope, rather than an ordinary full-planning application.

Appeal APP/N4720/D/25/3374453; application 25/04432/DPD; decision 2026-02-13. Read the original decision. Reasoning: pp1-2 paras2-9;pp2-3 paras10-12;para1.

8. A new report was excluded, but the site relationship was acceptable

North East Lincolnshire. Appeal 6006544 was allowed with conditions. Under the Part 1 written procedure used in this case, the Inspector disregarded a new daylight and sunlight study for procedural fairness. The acceptable light and outlook findings instead relied on the design, other windows and spacious garden. A retained obscure-glazing condition addressed privacy. Do not say the excluded report proved the proposal acceptable.

Appeal 6006544; application DM/0721/25/FULA; decision 2026-06-30. Read the original decision. Reasoning: pp1-3 paras3-13;p4 paras18-21;p5 schedule6.

9. A communal garden needed its own assessment

Barnet. A smaller roof-extension scheme was allowed with conditions after an updated assessment addressed the communal garden. Additional shadow was considered noticeable under the guidance discussed, but acceptable in the site's circumstances. The Inspector distinguished a larger earlier proposal and different evidence. Window assessments alone had not covered the garden question.

Appeal APP/N5090/W/25/3362412; application 24/2880/FUL; decision 2025-09-29. Read the original decision. Reasoning: pp3-5 paras12-23;especially16-20;pp7-8 schedule.

Use the comparison to improve your evidence

Compare South Hams with Bromley by asking what light remains available to the affected rooms. Compare Camden with Enfield by asking what information the Inspector needed to understand that relationship. Read Wandsworth and Cheshire West and Chester together to keep enclosure distinct from light. Use Leeds and Barnet to distinguish windows from outdoor space.

For your own application, identify the proposed feature, affected room or garden, current drawing revision and the precise effect or uncertainty. Read the daylight, sunlight and overshadowing guide for a practical checklist. For related concerns, use the privacy and outlook evidence resource or the existing light and overlooking guide.

For current decisions, read the applicable development plan with the current National Planning Policy Framework and its implementation provisions. The age of an adopted policy alone does not determine its weight. Use how planning decisions weigh neighbour comments for the wider context, and find your council for local sources.

Sources and reuse

These are original summaries of the linked Planning Inspectorate reasoning. We reproduce no applicant reports, drawings or photographs and omit personal names and house or unit numbers. The official originals remain identifiable. No later implementation history or court outcome is certified here.

Contains public sector information licensed under the Open Government Licence v3.0. The Planning Inspectorate terms explain relevant Crown and third-party rights. Please use the contact page to report a source or factual revision, identifying the appeal reference.