Building & planning
What you can build without planning permission under the July 2026 rules, and what it costs.
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Do I need planning permission? Ireland's new exemptions from 27 July 2026
New exempted development rules from 27 July 2026: 45 m² rear extensions, 30 m² garden rooms, a detached garden home, dormers, front rooflights, external insulation and more. The conditions, explained plainly.
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Garden room cost in Ireland 2026: real prices from €5,400 to €50,000+
What a garden room costs in Ireland in 2026, from €5,400 for a small insulated timber room to €24,000+ (plus VAT) for a turnkey office. What's included, the extras, and the new 30 m² planning limit.