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Can my neighbour's windows overlook my property in Ireland?

New windows are frequently exempted development for houses, but exemption conditions in Schedule 2 to the Planning and Development Regulations 2001 can restrict windows facing a boundary in some contexts, and where planning permission is needed, overlooking from windows is a standard amenity issue the council must consider.

Inserting a new window, or altering an existing one, in the wall of a house is generally exempted development under Class 6 of Schedule 2 to the Planning and Development Regulations 2001, provided the works do not materially affect the external appearance of the structure and, where the wall faces a boundary, certain conditions relating to the type of works are met. This means many everyday window alterations to an existing house do not require planning permission at all, regardless of what they overlook.

The picture is different for a new extension or new dwelling. If the works require planning permission — because they exceed exempted floor-area or height thresholds, involve a new structure rather than an existing wall, or are otherwise not covered by an exemption class — the local authority will assess the position and size of proposed windows as part of its normal review of residential amenity, and can refuse permission or impose conditions (such as requiring obscure glazing or a fixed high-level window) specifically to prevent direct overlooking of a neighbouring garden or windows.

Where a window has already been lawfully installed as exempted development, there is generally no mechanism under planning law to force its removal purely because it overlooks a neighbour, since the works were never subject to a planning assessment of amenity in the first place.

What to check about an overlooking window

Assess the situation using these steps:

  • Confirm whether the window was inserted in an existing wall (likely exempt) or forms part of a new extension requiring permission
  • Check whether the window faces directly into your private garden, patio or main amenity space
  • Review any planning application file for conditions addressing overlooking, such as required obscure glazing
  • Look at whether the window is at first-floor level or higher, where overlooking impact is usually greater
  • Raise overlooking explicitly, with distances and orientation, in a written submission if permission is still being sought
  • Consider a section 5 declaration request to the council if you dispute whether the works are actually exempt

Where a genuine planning application is involved, submissions that include a simple sketch or photograph showing sightlines from the proposed window into your garden are often more persuasive than a general objection.

When it becomes a civil matter

If a window is lawful under planning law but you still consider it a serious invasion of privacy, that moves outside planning control and into general property or nuisance law, which is a matter for the courts rather than the local authority, and would require independent legal advice.

Sources

Last reviewed 20 August 2026. General information only — not legal or planning advice.

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