Understanding daylight requirements in Aberdeenshire is a useful first step for anyone planning a house extension, a new home or a small residential development across this large rural authority. Aberdeenshire Council is the planning authority for the area that wraps around the city of Aberdeen, taking in the coastal towns of Peterhead, Fraserburgh and Stonehaven, inland centres such as Inverurie and Banchory, and a great many villages and countryside sites in between. In every case, the amount of natural light reaching both proposed and neighbouring homes is a real planning consideration.
This guide sets out the planning framework that applies in Aberdeenshire, how daylight and sunlight are assessed in Scotland, and how a professional report prepared to recognised national methodology can support your application.
The planning framework in Aberdeenshire
In Scotland, planning applications are decided in accordance with the statutory development plan. For Aberdeenshire, that plan has two key components:
- The Aberdeenshire Local Development Plan 2023, adopted on 13 January 2023, which contains the local planning policies for the area.
- National Planning Framework 4 (NPF4), adopted by the Scottish Ministers in February 2023. NPF4 forms part of the statutory development plan across the whole of Scotland and carries full weight in decision-making alongside the Local Development Plan.
The Local Development Plan is supported by detailed design guidance, including Appendix 8 (Successful Placemaking Design Guidance) and Appendix 9 (Building Design Guidance), together with the council's householder guidance for smaller proposals.
Key policies relevant to daylight and sunlight
- Policy P1 (Layout, Siting and Design) is the central design policy. It requires development to be designed to a high quality and to demonstrate the six qualities of successful place, with the layout, siting and design of buildings shaped by their context, including the relationship to neighbouring properties.
- Policy P3 (Infill Development within Settlements and Householder Developments) applies to extensions, plots between existing homes and small-scale development. Proposals are assessed to ensure they do not create new problems for neighbours through overlooking, over-shadowing or an overbearing impact, and applications that fail on these grounds can be refused.
- NPF4 Policy 14 (Design, quality and place) applies a design-led approach based on the six qualities of successful places, including creating healthy and pleasant places to live.
- NPF4 Policy 16 (Quality homes) promotes high-quality, sustainable homes, reinforcing the expectation that new housing provides good internal amenity, including adequate daylight.
Read together, these policies make clear that protecting daylight and sunlight, and avoiding over-shadowing and overbearing impacts, is a core part of the amenity that Aberdeenshire's plan seeks to safeguard.
How daylight and sunlight is assessed in Aberdeenshire
As with most Scottish councils, the Aberdeenshire Local Development Plan sets the policy expectation of good amenity, including protection from over-shadowing, but it does not set its own numerical daylight or sunlight thresholds. The technical measurement is therefore carried out using established UK best practice.
That methodology is the Building Research Establishment guidance BRE BR 209 (2022), "Site layout planning for daylight and sunlight: a guide to good practice", supported by the daylight standard BS EN 17037. These documents are not Scottish policy, but they are the recognised UK-wide benchmarks used by planning officers and consultants to demonstrate acceptable daylight and sunlight. In Aberdeenshire, a BRE-based assessment is the practical way to show that a proposal meets the amenity and design expectations of Policy P1, Policy P3 and NPF4 Policies 14 and 16.
A typical assessment considers:
- Vertical Sky Component (VSC) and daylight distribution (the no-sky line) for existing neighbouring windows, to test any reduction in the daylight they currently receive.
- Annual Probable Sunlight Hours (APSH) for windows facing within 90 degrees of due south. At Aberdeenshire's northerly latitude, the low angle of the sun makes the assessment of sunlight and over-shadowing especially worthwhile.
- Over-shadowing of gardens and amenity space, often expressed as the sunlit proportion on 21 March, which is directly relevant to the over-shadowing test in Policy P3.
- Daylight and sunlight within the proposed homes, to confirm good internal living conditions.
Local factors that affect daylight in Aberdeenshire
- Coastal towns and harbours. Peterhead and Fraserburgh have dense, historic harbour areas with tightly packed buildings, where even modest extensions can affect a neighbour's light and where over-shadowing must be carefully demonstrated.
- Conservation areas and traditional centres. Stonehaven, Inverurie and Banchory include conservation areas and traditional streets where massing must respect both neighbouring amenity and local character.
- Rural and countryside sites. Much of Aberdeenshire is open countryside, where new houses and steadings often have generous plots and strong solar aspects, making orientation and the protection of sunlight to gardens a real design opportunity under Policy P1.
- Northerly latitude. Aberdeenshire sits well to the north, so the low winter sun means spacing, orientation and the protection of south-facing windows have a marked effect on the sunlight that homes and gardens actually receive.
When you are likely to need a daylight and sunlight report
An assessment is commonly advisable or requested where:
- A two-storey or rear extension sits close to a shared boundary and could affect a neighbour's windows or garden.
- An infill or backland house is proposed between or behind existing homes, engaging Policy P3.
- A small residential development needs to show good internal amenity for future occupiers.
- A neighbour has objected on grounds of over-shadowing or loss of light, or an officer has raised an amenity concern.
Commissioning the assessment early, while the layout and massing can still be adjusted, generally produces the smoothest outcome.
How Fortress Associates can help
Fortress Associates provides clear, robust our daylight and sunlight report service prepared to BRE BR 209 (2022) and BS EN 17037, written to support compliance with the Aberdeenshire Local Development Plan 2023 and the relevant NPF4 policies. We work nationwide, including across Aberdeenshire, with a typical turnaround of 4 to 5 working days and no advance payment required. We also prepare Building Regulations drawings where a project needs them. To discuss a site in Peterhead, Fraserburgh, Stonehaven or anywhere in the area, please get in touch.
Sources & further reading
- Aberdeenshire Council – Local Development Plan 2023
- BRE BR 209 (2022) – Site layout planning for daylight and sunlight
- National Planning Framework 4 (NPF4)
- Related reading: Daylight Requirements in Aberdeen City, covering the neighbouring city authority.
- Contact Fortress Associates
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