Edinburgh’s largest single office building is undergoing a major refurbishment to meet “unprecedented demand” in the capital.Record-low vacancy levels have triggered a contemporary take at One Lochrin Square, the former site of Scotmid HQ.The work will see the ground floor being “defurbished” to a stripped-back attic-style accommodation favoured by technology, media and telecoms (TMT) firms.UBS Asset Management, which handles the property on behalf of its owners, said this finish is commonplace in London but is an Edinburgh first. The remaining upper floors of the 62,416sq ft building, being marketed by property consultants JLL and Knight Frank, are being finished to a traditional Grade A specification, with project completion this December.