Daylight requirements in Ards and North Down are shaped by a borough that is still mid-way through preparing its first borough-wide development plan. From Bangor and Holywood along the Belfast Lough shore to Newtownards, Comber and Donaghadee, applicants here work to a framework where the strategic local plan is in draft while the substantive tests on light, overshadowing and privacy continue to flow from Northern Ireland's retained regional policy and the legacy area plans. This guide sets out how Ards and North Down Borough Council, the planning authority since 2015, approaches daylight and sunlight, and how a well-evidenced assessment supports an application.
The planning framework: a draft LDP 2032, the SPPS and extant area plans
Each Northern Ireland council prepares a Local Development Plan (LDP) under the Planning Act (Northern Ireland) 2011 in two stages — a Plan Strategy, then a Local Policies Plan. Ards and North Down is at an earlier point in that journey than some of its neighbours. The Ards and North Down LDP 2032 Plan Strategy is at draft stage and has not yet been adopted: the draft Plan Strategy was published for public consultation in late October 2025, and it must complete consultation and an Independent Examination before the Council can adopt it. Until that happens, day-to-day decisions continue to rest on the regional framework and the borough's extant development plans, which include the Ards and Down Area Plan 2015, the North Down and Ards Area Plan 1984–1995, the draft Belfast Metropolitan Area Plan (BMAP) and the Bangor Town Centre Plan. Because the new Plan Strategy is not yet in force, it carries only limited weight as a material consideration at this stage.
The overarching policy is the Strategic Planning Policy Statement for Northern Ireland (SPPS, 2015), and the retained Planning Policy Statements remain in force until superseded by adopted local policy. For residential amenity the key documents are PPS 7 "Quality Residential Environments", its Addendum ("Safeguarding the Character of Established Residential Areas") and the companion design guide "Creating Places". PPS 7 Policy QD1 makes clear that permission for new housing is granted only where a quality and sustainable residential environment is achieved, and it directly considers whether a scheme would unduly harm privacy or amenity through overlooking, loss of light, overshadowing or dominance.
How daylight and sunlight are assessed
Northern Ireland's residential policy contains no bespoke numerical daylight calculation, so the recognised best-practice methodology is applied: the BRE guide BR 209, "Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice" (2022 edition), alongside the British and European standard BS EN 17037. A robust assessment in Ards and North Down will normally cover:
- Vertical Sky Component (VSC) at neighbouring windows, with the BRE guideline of at least 27% retained, or no less than 0.8 times the previous value.
- Daylight distribution (No Sky Line) within affected habitable rooms.
- Annual Probable Sunlight Hours (APSH) for windows facing within 90 degrees of due south, including the winter sunlight check.
- Overshadowing of gardens and amenity space, with at least half of an amenity area receiving at least two hours of sunlight on 21 March.
- The 45-degree test from a neighbour's nearest habitable room window, the usual yardstick for extensions and infill.
For new homes, BS EN 17037 frames the daylight provision achieved inside rooms — increasingly relevant for apartment and town-centre conversion schemes in Bangor and Newtownards.
Local context that shapes daylight assessment in the borough
Ards and North Down is a predominantly coastal borough, and several local characteristics influence how the amenity tests bite:
- Coastal towns and conservation sensitivity. Bangor, Holywood and Donaghadee contain attractive seafront and historic streets, and the borough makes extensive use of Areas of Townscape Character designations. In these areas, the form, height and massing of new development are scrutinised closely, which feeds directly into daylight, sunlight and overshadowing considerations for neighbours.
- Belfast Lough fringe and commuter pressure. The western part of the borough sits on the metropolitan edge near Belfast, where infill and densification of established residential areas brings the PPS 7 Addendum and separation distances into play to resist town-cramming and overlooking.
- Town-centre regeneration. Bangor's waterfront and town centre and Newtownards' commercial core are the focus of regeneration, where taller or denser proposals require careful daylight and sunlight analysis against existing windows and amenity space.
Consistent with the retained PPS 7 and Creating Places standards used across Northern Ireland, the practical separation principles applied in the borough are the familiar ones: a guideline of around 20 metres between facing windows of main habitable rooms to protect privacy and daylight, and roughly 10 metres where a blank gable faces a neighbouring property, together with adequate boundary clearances. These are guidelines applied with judgement to each site, not fixed thresholds.
Common daylight pitfalls in local applications
- Seafront and gap-site development in Bangor, Holywood and Donaghadee, where height and orientation affect both daylight to neighbours and sunlight to streets and shared spaces.
- Backland and garden infill on the Belfast Lough fringe, where overlooking and loss of light to existing dwellings draw close scrutiny under the PPS 7 Addendum.
- Two-storey rear and side extensions, where the 45-degree test from a neighbour's habitable window is the usual flashpoint.
- Apartment and conversion schemes, where internal daylight under BS EN 17037 and sunlight to communal amenity space are frequently raised.
How Fortress Associates can help
Fortress Associates provides our daylight and sunlight report service for projects throughout Ards and North Down and across Northern Ireland. We prepare clear, defensible Daylight & Sunlight Reports to the BRE BR 209 (2022) method and BS EN 17037, set against the SPPS, the retained PPS 7 / Creating Places standards and the borough's extant area plans, and we can also produce building control drawings for your scheme. We work UK-wide with a 4 to 5 working day turnaround and no advance payment required. Contact us through our contact page or browse our full range of services. If your project is nearby, see our guides to daylight requirements in Belfast and daylight requirements in Antrim and Newtownabbey.
Sources & further reading
- Ards & North Down Borough Council – Local Development Plan (LDP 2032, draft Plan Strategy)
- Ards & North Down Borough Council – Extant Development Plans and Policies
- BRE – BR 209 Site Layout Planning for Daylight and Sunlight (2022)
- Department for Infrastructure – Planning NI (SPPS, PPS 7 and Creating Places)
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