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• Planning permission for an extension in Ireland — the 45 m² exemption and a 94% grant rateDublin councils granted 94% of extension applications decided in the year to September 2026. Since 27 July 2026 a rear extension of up to 45 m² can be exempt. The conditions, when you still apply, the fee and the timeline.
• Apartment and build-to-rent planning applications in Dublin — the register's largest schemes, council by council399 applications mentioning apartments reached the Greater Dublin registers in 12 months, 136 granted and 41 refused, with 7,666 homes in the files that state a count. South Dublin and Meath carry the big schemes (886 homes at Clonburris, 757 at Moygaddy), Dublin City carries the volume. Which councils grant, where the refusals cluster, and every recent file linked.
• 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.