Application for a 10 year permission for development within the grounds of the King's Hospital School, Old Lucan Road, Palmerstown, Dublin 20, D20 V256. The proposed development will alter a Protected Structure (RPS Ref: 066 Avondale) and is located within the curtilage of another Protected Structure (RPS Ref: 017 Brooklawn). The proposed development will also result in the removal of some protected trees and the planting of new soft landscaping (Tree Preservation Order (Quarryvale, Brooklawn) (Liffey Valley No.1) Order 1990). The development will consist of amendments to existing sports pitches to create: a) 1 no. synthetic all weather rugby pitch (120m x 70m) with team dugouts, 1.2m high boundary fencing, and floodlighting (18 no. 1200 watt LED luminaires mounted on 6 no. 15 metre high columns); 1 no. synthetic all weather rugby training area (70m x 38m) (Training Area 1) with floodlighting (8 no. 800 watt luminaires mounted on 4 no. 12 metre high columns); 1 no. synthetic all weather rugby training area (60m x 20m (Training Area 2)) with floodlighting (12 no. 300 watt luminaires mounted on 6 no. 8 metre high columns); and 1 no. synthetic all weather hockey pitch (91.5m x 55m) with fencing and ballstop netting enclosures (7.5m high), team dugouts, and floodlighting (16 no. 1200 watt luminaires mounted on 4 no. 18 metre high columns). The development will also consist of b) the construction of a new 2 storey clubhouse (1,247 sq m gross internal area) on a raised podium with changing rooms, toilets, office and plant rooms, multi-use space (gym & function area) and first floor external spectator terrace (310 sq m); c) removal of some existing protected trees and the planting of new soft landscaping; d) new one-way vehicle and cycle route with drop off areas and lighting; e) new illuminated 109 no. space car park with five no. additional bus parking spaces; f) widening of vehicular egress point on Old Lucan Road by relocating existing gate piers and part-demolition of boundary wall on Old Lucan Road to create new cycle and pedestrian path (these works would alter Protected Structure Ref: 066 Avondale); g) new one-storey ESB substation switchroom; and h) earthworks, drainage infrastructure and attenuation, hard and soft landscaping, and all other associated site development works.