JABA undertakes a range of surveys including measured, structural and condition surveys for house buyers and property owners, as well as detailed investigations of building defects.

JABA carries out a range of archaeological and archive research in addition to site surveys, mortar analysis and opening up of the structure. Detailed survey and a thorough understanding of traditional construction techniques provide the basis for defect analysis and appropriate repair specifications.

John Barnes is a quinquennial inspector for diocese in Bradford, Carlisle, Durham, London, Manchester and Newcastle.