Purcell Architecture Limited

The works include the repair, conservation and redecoration of the cornice and ceiling the Lady Marion Alford room at Ashridge House.

Removal of existing roof covering and rooflights and proposed new roof covering and rooflights of former generator block (Listed Building Consent).

Erection of two new main entrance gate lodges and gates, construction of formal ponds and new landscaping

Historic building fabric repairs to Grade I listed WWI memorial to Sailors of the Merchant Navy, including proposed alternative weathering details to existing stone cladding and proposed ventilation measures to substructure.

Installation of dry riser pipework inlets, associated pipework, to discrete locations to the external facade of the building and within planted area of south east lawn.

Partial discharge of Condition 10 (internal materials samples) of Listed Building Consent 2020/01842/LBC dated 20 October 2020.

Installation of a secondary glazed window to front elevation at ground floor level and installation of 2 air condenser units, one to the rear lightwell and one beneath secondary entrance stairs, with associated pipework.

Installation of new ventilation plant on the second floor roof of the Conservation Studios at the National Gallery and other associated works. Linked with 25/06612/LBC

Removal of existing roof covering and rooflights and proposed new roof covering and rooflights of former generator block (Full planning Application).

Details of Condition 6 - Construction Environment Management Plan as required by planning permission 24/AP/0686 dated 29/05/2024 for Stabilisation of the northern wall and repairs to stonework.

Details of Fire Safety Works in part pursuant to condition 8 of listed building consent dated 11 June 2025 (ref. 25/01205/LBC).

Extension to the visitor entrance building to house a new ticket sales area and café; Infil-ling roof to the former generator block courtyard, re-roofing of the Alpine House and in-ternal/external reconfigurations and link extension; Single storey winter garden conserv-atory to the Stable Block; Terrace extension to the east and internal/ external reconfigu-rations; Change of use from redundant staff offices and staff accommodation within the stable block to guest accommodation including extension to Honey Cottage; Change of use to the partial first floor of the Red House to staff accommodation; Small WC exten-sion, reinstated chimney stack, and roof alterations to the Engine House; Lightweight wedding pavilion to the lawn, south of Leonardslee House; Landscaping changes in-cluding to the forecourt of Leonardslee House.

Installation of new ventilation plant on the second floor roof of the Conservation Studios at the National Gallery and other associated works. Linked with 25/06611/FULL

Installation of secondary glazed window to front elevation at ground floor level. Installation of 2no. condenser units, one to the rear lightwell and one beneath secondary entrance stairs, with associated pipework.

Submission of details pursuant to Condition 2 (Glazing & Actuators Details) & 4 (Works Specification) of planning permission 23/2613/L dated 08/02/2024.

Detailed proof that all the necessary licenses under the Highways Act have been secured/approved for the placement of any structures associated with the works on the public highway pursuant to condition 6 of planning permission dated 6th March 2026 (RN:25/07203/FULL).

Details required by Condition 3 (Additional Detail) attached to planning permission 26/005028/LBC

Details of Condition 5 - Statement for repairing and reinstating footway as required by planning permission 24/AP/0686 dated 29/05/2024 for Stabilisation of the northern wall and repairs to stonework.

Replacement of glass of modern (1999) glazed roof (steel support structure remaining), replacement of chiller units on front elevation roof, repairs and relining of modern (1999) walk-in gutter, and upgrades to internal lighting and acoustic of Neptune Court of the Grade I listed National Maritime Museum.

Detailed drawings and sections (specifying materials, finished appearance and relationship to existing building fabric) of the banner fixings pursuant to Condition 6 of listed building dated 24th November 2023 (RN:23/06572/LBC)