development on this site of c. 0.366 ha at Marshfield House, Mill Lane, Leixlip…

Proposed development

development on this site of c. 0.366 ha at Marshfield House, Mill Lane, Leixlip, Co. Kildare, W23 E5W5. Marshfield House is a designated Protected structure RPS No. B11-116. The development for which retention permission is sought consists of: works undertaken to the main dwelling, which includes internal and external works comprising the: removal and replacement of floors, ceilings, partitions (including relocation, where relevant) and stairs from First to Second Floor Level in the existing house; electrical cabling, domestic hot and cold-water services, and central heating pipework throughout the existing house; the removal of external render; replacement of windows on the existing house; the existing as-built west gable conservatory lobby (10 sq m); existing outbuilding to the southside of the west courtyard; the existing as-built outbuilding to the northside in the west courtyard (29 sq m); and the existing as-built garage (including roof lights) (75 sq m). The total floor area to be retained is 114 sq m. The development for which permission is sought will consist of: the demolition of the existing unauthorised extensions to the northeast and north of the existing house and the provision of a new single storey extension to the existing house which will comprise of a kitchen / dining area, toilet, pantry, wash room, entrance lobby, veranda/rooflight, with sliding doors to the east elevation; a new single storage extension and canopy cover (with roof lights) to northwest of the existing house, which will comprise of a laundry drying room, boot room, shower room, open covered shed for agricultural machinery, and a small agricultural work room; the repair and reinstatement of historic sashes to 1 no. window to rear of the main house; 2 no. unauthorised openings in the wall on the east gable of the existing house to be filled in with masonry; removal of internal partitions and provision of new partitions in the existing house, where required; new rendering to the existing house and associated structures; provision of new roof structure to the existing house, which will include the provision of new roof lights and remediation works to the existing roof elements that will be retained; alterations to the existing garage and outbuildings (for which retention permission is sought); and reroofing of the sections of the garage and outbuildings (structures that are proposed to be retained) with natural slates and provision of roof lights, where required. The pro

What happens next

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 20 Oct 2026.

• Open the official file on the Kildare planning register ↗
• Street View at this location ↗
• More applications in Kildare
• Planning a smaller project? Since 27 July 2026 many need no permission: check yours
• How the application process works