Sheppard Robson has submitted plans for a significant retrofit of Calton Square, an office building in Edinburgh’s New Town, adjacent to the UNESCO World Heritage Site of Calton Hill.

The project, managed by Ardstone Capital Ltd (UK) on behalf of Macquarie Asset Management, aims to extend the building from 150,000 to 200,000 square feet, and also improve the quality of the office space and enhance the building’s environmental performance.

The design process involved a detailed analysis to explore retention options and select the most effective fabric-first reuse strategy. The refurbishment plan retains 88% of the existing structural frame.

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