JMP was commissioned in 2008 to consider proposals for expanding the facility to provide new exhibition space that enhances the existing museum improving the experience for visitors to the house. 

The proposal is to create a new lightweight structure to the rear of the property that infills an existing courtyard space. This new glazed element would contain new flexible exhibition space on first and second floors and a reception entrance space on the ground floor. A new stair would provide an additional public circulation route between the upper levels to allow a greater number of visitors to experience the building.  This new glazed element would create a clearly modern intervention to the existing listed building but independent from the historic fabric.