20 Carlton House Terrace London SW1Y 5AN

Proposal

Amendments to planning permission dated 28th July 2023 (RN 23/02725/FULL) for: Variation of Conditions 1 and 11 of planning permission dated 20 October 2022 (RN: 22/04903/FULL) for the demolition of existing mansard roof and roof level plant and construction of two storey vertical roof addition with extensions at fourth, fifth, sixth and seventh floor levels for additional office (Class B1) floorspace. Use of the lower ground and basement level for flexible/alternative office (Class B1)/retail (Class A1)/leisure uses (Class D2); car parking, cycle parking, ancillary office uses and mechanical plant. Alterations to the existing building including new windows and entrance, new terraces to eighth and tenth floor levels and new plant enclosure at roof level and associated works; and amendments to car parking provision (retention of the public car park), alterations to the cycle parking provision and basement layouts and reduction in flexible commercial floorspace namely amendments to South West exit route: adjust from double-leaf doors to a single-leaf door; Landlord entrance: remove one set of double doors and framing added; Pavement level: add fourth louvre bay for additional basement ventilation; West elevation: adjust window and louvre configuration facing Waterloo Gardens; Level 01 rooflight: reduce in size; Maintenance access: small door added to the facade for maintenance purposes.