16, Glasnevin Drive, Glasnevin, Dublin 11, D11 DK30

GuidesAll guides →

• Garden room and granny flat planning permission — the 2026 Class 1A and 3A exemptionsDublin councils granted 89% of the 911 garden-room and granny-flat applications lodged in the two years to September 2026. Since 27 July 2026 a detached 32–45 m² garden dwelling can be exempt, with a 14-day notice to the council.
• Porch and garage conversion planning permission — 99% of garage conversions grantedDublin councils granted 87 of 88 garage-conversion applications and 95% of porch applications in the 12 months to September 2026. The 2 m² porch limit, the parking condition, and when neither needs an application.
• Planning application fees and costs in Ireland — €34 for an extension, €65 for a house, treble for retentionThe council fee is the smallest cost of a planning application. Schedule 9 fees for a house, an extension, retention and commercial floor space; the €20 observation, the €220 appeal, development contributions and what the drawings and notices cost.
• Site notice planning rules — 22% of Dublin applications invalid, and the notice is the top cause2,539 of the 11,409 applications received by Dublin councils in the year to September 2026 were declared invalid; in South Dublin nearly half were for the site notice. What it must say, where it goes, when it turns yellow.