If you are planning a house extension, a new home or a larger residential scheme in the city, it helps to understand the daylight requirements in Dundee City before you submit. Dundee City Council is the planning authority, and it assesses the effect of development on daylight, sunlight and privacy through its adopted Local Development Plan alongside national policy. This article explains the policies that apply, the technical standards used in practice, and how a professional daylight and sunlight report can strengthen your application.
The planning framework in Dundee
Scotland's statutory development plan is made up of two parts that are read together: the council's adopted Local Development Plan (LDP) and the National Planning Framework 4 (NPF4), adopted by Scottish Ministers on 13 February 2023. Planning applications in the city are determined against both.
The relevant local plan is the Dundee Local Development Plan 2019, which the council adopted on 15 February 2019 and which guides development across the city up to 2029. It remains the adopted plan while the council prepares its replacement. Where an LDP 2019 policy conflicts with NPF4, the council gives effect to NPF4 as the more recent national policy.
Which Dundee policies deal with daylight and sunlight?
In Dundee, daylight and sunlight fall under the broader heading of residential amenity and good design. Three adopted policies are most relevant:
- Policy 1: High Quality Design and Placemaking – requires all development to follow a design-led approach and to respect the character and amenity of the place. New development must meet the “six qualities of successful place” set out in the plan's Appendix 1, which include amenity considerations such as daylight, sunlight and privacy.
- Policy 11: Householder Development – the key policy for extensions and alterations. It supports householder development where, among other criteria, it “does not have a detrimental effect on the neighbouring properties in terms of physical impact, overshadowing or overlooking.” The council's Householder Development – Advice and Best Practice Supplementary Guidance expands on this.
- Policy 10: Design of New Housing – supported by Appendix 4, which sets minimum design and layout standards for new housing, including a privacy standard of generally a minimum of 18 metres between the facing windows of habitable rooms.
As with most Scottish planning authorities, Dundee City Council does not set a specific numerical BRE daylight target within the LDP itself. The plan establishes the principle of protecting neighbours from overshadowing and loss of light, and the recognised best-practice method is used to demonstrate compliance.
How daylight and sunlight are actually measured
The UK best-practice method is the Building Research Establishment guide BRE BR 209, Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice (third edition, 2022), used together with the British and European Standard BS EN 17037. Because Dundee has no competing local numerical standard, BR 209 is the methodology applied to support the amenity and design aims of Policy 1, Policy 10, Policy 11 and NPF4.
A typical report assesses:
- Vertical Sky Component (VSC) – the amount of skylight reaching a neighbour's window, with a BR 209 guideline of 27% and a noticeable reduction generally where the retained value is below 0.8 times the previous level.
- No Sky Line / Daylight Distribution – how much of a room still receives direct skylight after development.
- Annual Probable Sunlight Hours (APSH) – sunlight to windows facing within 90 degrees of due south, measured over the year and in winter.
- Overshadowing of gardens and amenity space – whether at least half of a garden or sitting-out area receives sunlight at the equinox.
For new dwellings, BS EN 17037 also informs the daylight provided within the homes themselves, supporting the “quality housing” aims that run through the Dundee LDP and NPF4.
NPF4 policies to be aware of
NPF4 carries significant weight in every decision. The most relevant policies for daylight and sunlight are Policy 14 (Design, quality and place), which seeks well-designed places that safeguard amenity, and Policy 16 (Quality homes), which promotes high-quality, well-designed housing. A BRE-based report is an effective way of showing Dundee City Council that a scheme respects both the local LDP 2019 amenity policies and these national objectives.
When you are likely to need a daylight and sunlight report
An assessment is commonly needed or advisable where:
- a two-storey extension, dormer or rear addition could overshadow a neighbour's windows or garden;
- a new house or flatted development sits close to existing homes, for example in the Inner City or Central Broughty Ferry character areas;
- an infill or backland plot is proposed in an established residential street; or
- a case officer or neighbour has raised loss of light, overshadowing or overlooking as a concern.
A clear, BR 209-compliant report submitted early can address objections directly and give the planning officer the evidence needed to apply Policy 11 and Policy 1 with confidence.
How Fortress Associates can help
Fortress Associates offers our daylight and sunlight report service to homeowners, architects and developers in Dundee and across the UK. Every report is prepared to BRE BR 209 (2022) and BS EN 17037 and written to support the amenity and design policies of the Dundee LDP 2019 and NPF4. We work to a 4–5 working day turnaround with no advance payment. See our services or contact us to discuss your project.
Sources & further reading
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