Catherinestown House, Hazelhatch Road planning approved

What’s proposed

Two storey 38sq.m office extension with flat roof; changes to north and east elevations at ground and first floor level

Reference: SD18A/0412
Local authority: South Dublin County Council
Status: Commenced · register status “Decision”
Received: 16 Nov 2018
Observations close: 21 Dec 2018 (closed 2849 days ago)
Decision due: 19 Jan 2019 · decided 21 Jan 2019
Decision: Grant permission on 21 Jan 2019
Proposed development: Two storey 38sq.m office extension with flat roof; changes to north and east elevations at ground and first floor level
As published by the register.
Site area: 5,238 m² from the mapped boundary, not the council's figure
Applicant: Not published — the national feed carries no applicant name council register

6 Mar 2019 · Builder told the council work was starting (seven-day notice) SN0004001SD

National planning feed (NPAD), fetched 11 Sept 2026, 18:51.

Source: npad · fetched 11 Sept 2026, 18:51

Source	Licence	Fetched	Link
npad	CC-BY-4.0	11 Sept 2026, 18:51	open

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.
Planning enforcement in Ireland — 7,396 cases a year, the warning letter and the seven-year ruleCouncils opened 7,396 planning enforcement cases in 2024. What unauthorised development is, how a complaint becomes a s.152 warning letter and a s.154 notice, what the seven-year rule does and does not do, and how to report or answer one.
Certificate of compliance with planning permission in Ireland17% of GDA planning applications are retention. Who can sign a certificate of compliance with planning permission, what the RIAI / Law Society opinion covers, the gaps it leaves.
Where Dublin is building — commencement notices by local electoral area, 12 months3,366 commencement notices were lodged across the four Dublin councils in 12 months and geolinked to an electoral area; Pembroke led with 204 and Tallaght South trailed with 23. What a commencement notice is, why it is the signal that a permission is real, the ranking of all 31 electoral areas, and the month-by-month shape.