The deal on Lexington Avenue is understood to be for for 16 years and HSG is bucking the trend of law firms downsizing by doubling its space. The reduction in space by Simpson Thacher is more consistent with current law-firm patterns although it will still have almost 500,000 square feet.

'Rare example of growth'

Savills Studley’s Craig L Lemle, was quoted in the New York Post  saying: ‘HSG stands as a rare example of growth” in an industry where many firms are consolidating their real estate footprints.’