SJ says that Isobelle was a Matron / senior Nursing Officer and someone else has said that Derek was a hospital administrator in Scotland. (Possibly Gartnavel?). They would have both had well paying jobs but enough to have afforded Cransford Hall and renovate it? Possibly. By the time they had sold the Granny Farm in Suffolk, they had certainly made enough to invest in several properties - Suffolk, London, South Africa and Lalande, plus enough disposable income for Derek to have indulged SJ's whims. I suspect that he may have also invested in or maybe financed Gerry's business in 2003. Could this have been when they sold the Granny Farm? A year later SJ bought Lalande., which may have been "her share." SJ refers in a recent vlog to "her inheritance money". Maybe they sold a house for an apartment which IJ has retained, and the addition funds used for the repairs she claims to have carried out. Derek died in 2009 so a fairly short window