PlanningLeads
Planning application · Leitrim County Council

Upgrade of an existing wastewater treatment system at Derreen (Johnston), Aghacashel

Derreen (Johnston), Aghacashel, Co. Leitrim

2660164 · LeitrimLodged

up to 2 storeys · 0.8 ha · Lodged

Planning application 2660164 to Leitrim County Council: Upgrade of an existing wastewater treatment system and percolation area to comply with the current EPA Code of Practice, at Derreen (Johnston), Aghacashel. A council decision is due by 24 August 2026.

Timeline

  1. Application lodged
  2. Further information requested
  3. Council decision due

Key facts

Reference
2660164
Planning authority
Leitrim County Council
Received
30 Jun 2026
Decision due
24 Aug 2026
Status
Lodged
Use
Residential
Dwellings
1
Floor area
82 m²
Site area
0.8 ha
Further information requested
17 Aug 2026

Proposed development

1. Full permission for the upgrade of an existing wastewater treatment system and percolation area to comply with the current EPA Code of Practice. 2. To retain an existing 2 storey detached domestic extension and the conversion of this building from agricultural use to domestic use and all ancillary works.

Planning status

The application has been lodged and validated. The council has eight weeks to decide, unless it asks for further information. The council's decision is due by 24 Aug 2026.

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About this page: the facts above come from the statutory public planning register kept by Leitrim County Council and are refreshed weekly (last updated 6 Oct 2026). Applicant names and contact details are not shown. Status labels are PlanningLeads' plain-language reading of the register status and the "Use" label is classified by AI from the public description (see how we use AI); neither is legal advice and the council's file is the record. How we handle this data: privacy notice.

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