11 Charles II Street

St James’s, SW1
The Crown Estate
Practical completion 2015
21,000 sq ft office, 6,100 sq ft retail
£9m
Office, retail

JM Architects, Architects

Price & Myers, Structural engineer

Watkins Payne Partnership, Services engineer


Charles II Street is a prominent Grade II listed building providing 21,000 sq ft of refurbished offices and 6,100 sq ft of restaurant space. M3 reviewed a range of potential asset-enhancing options alongside the clients to define objectives and targets for the brief. M3 continued on to lead a team through sensitive and ambitious design, planning consent, and the delivery of the technically challenging project. The building achieved BREEAM Excellent and was substantially let, with the new restaurant trading, within six months of practical completion.

Project highlights


  • Developed options and high level costs and appraisals to facilitate decisions
  • Managed the design to meet the spatial and sustainability brief whilst working within the constraints
  • Achieved BREEAM Excellent for the refurbishment
  • Assisted in leasing and acting as landlord’s representative