Carrowbeg , Killasser , Swinford

What’s proposed

alterations and extension to existing derelict dwelling house and the replacement of the existing septic tank and percolation area with a new septic tank treatment system along with ancillary site works

25321 is a planning application to Mayo County Council for alterations and extension to existing derelict dwelling house and the replacement of the, received on 31 Jul 2025; permission was granted with conditions on 22 Sept 2025.

Planning details

Reference: 25321
Local authority: Mayo County Council
Status: Commenced · register status “APPLICATION FINALISED”
Received: 31 Jul 2025
Observations close: 4 Sept 2025 (closed 385 days ago)
Decision due: 24 Sept 2025 · decided 22 Sept 2025
Decision: Conditional on 22 Sept 2025
Proposed development: alterations and extension to existing derelict dwelling house and the replacement of the existing septic tank and percolation area with a new septic tank treatment system along with ancillary site works
As published by the register.
Site area: 4,694 m² from the mapped boundary, not the council's figure
Applicant: Not published — the national feed carries no applicant name council register

Nearby 1 application within 500 m in the last 5 years

GrantedCARROWBEG , KILLASSER , SWINFORDeXISTING DOMESTIC EXTENSION AND CONSTRUCTION OF A NEW SUN LOUNGE… · received 11 Oct 2022 · decided 17 May 2023 · 275 m away

Explore this area on the map →

Appeal

Not appealed.

Commencement

Opt out commencement notice CN0138336MO
16 Feb 2026Carrowbeg, Killasser, Swinford, Mayo, F12 NT93matched by ref_exact

Provenance

Register row from the national planning applications feed (NPAD), fetched 18 Sept 2026, 15:44 (store id 436846). Deadlines were computed by the store from the received / decided dates under the Planning and Development Act 2000 and are recorded as events, not recomputed here. Council register: http://www.eplanning.ie/MayoCC/AppFileRefDetails/25321/0.

Source: npad · fetched 18 Sept 2026, 15:44

Source	Licence	Fetched	Link
npad	CC-BY-4.0	18 Sept 2026, 15:44	open

Something wrong with this page?

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.

What’s proposed

Planning details

Nearby 1 application within 500 m in the last 5 years

Appeal

Commencement

Zoning at the site

Designations within 250 m

Provenance

Carrowbeg , Killasser , Swinford

What’s proposed

Planning details

Nearby 1 application within 500 m in the last 5 years

Appeal

Commencement

Zoning at the site

Designations within 250 m

Provenance

GuidesAll guides →