The project may create new jobs, which would be good news after all 50 staff at the garden were put up for redundancy in October. But the majority of workers employed will be those who used to work in the old tearooms, which closed in September.
The old tearooms had become tired and the new building is part of the £100m regeneration programme. It will be a glass-fronted design, sited at the western end of the Italian Gardens.
Work on the Garden Room restaurant began in October and is expected to be complete in spring.
In October the owners of the 304ha Staffordshire estate, St Modwen Properties and German leisure entrepreneur Willi Reitz, removed the management team of Trentham Leisure and put all staff on redundancy notices.