Partial demolition and single-storey extension with new wastewater system

David and Donna‑Marie Corless of Coolaght, Claremorris, have submitted a planning application to Mayo County Council for a partial demolition of their existing dwelling and the construction of a single‑storey extension on the side and front of the remaining house. The proposal also includes replacing the current septic tank with a new proprietary wastewater treatment system and carrying out all ancillary works required by the revised site boundaries.

The council received the application on 21 April 2026 under reference number 2660316. A conditional decision was issued, with the final determination due by 15 June 2026; the council formally decided on 9 June 2026. The approval allows the Corlesses to remove part of their house and build an extension that will provide additional living space while ensuring compliance with local environmental standards through the new wastewater system.

The application details the demolition of a section of the existing dwelling, construction of a single‑storey side and front extension, replacement of the septic tank, and all ancillary works on the revised site boundaries. The project is situated in Coolaght, Claremorris, Co Mayo (F12 DE43).

For further details consult the Mayo County Council planning file and the localnews.ie coverage of the decision.

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