"The earliest part of Stonehouse was constructed prior to the late 16th century, but due to the fragmentary nature of the visible fa bric of the early structure it is not possible to confirm its date of origin with certainty. The Phase-2 range , which was constructed in the late 16th century and was framed around the Phase- 1 structure, has been substantially altered; however, enough of the structure survives to allow for reconstruction and interpretation of aspects of it s original form including its roof.
The form and layout of the house following its modification and extension in Phase 3 is much more tangible and can be established with greater certainty. As such, it is considered that the significance of the building lies primarily within the Phase-1 , Phase-2 and Phase-3 ranges, given their value in demonstrating aspects of the development of the building from its origins predating the late-16th century, through to c.1700.
These phases are representative of wider developmental trends in vernacular architecture, the typical development from (possibly) open hall, to fully- floored dwelling, and subsequent piecemeal addition and alteration to adapt the house to the occupants’ changing needs, being illustrated to varying extents in the surviving building fabric."