Mr Castles then represented the complainant, suing the former lawyer for professional negligence while continuing a claim against the council up until 2006.
John Katz, QC, acting on behalf of the Law Society, said Mr Castles used the complainant as a "cash cow" to fund his entire practice. After selling the Remuera property in 2006, the complainant had "sold the last of the family silver", Mr Katz said.
The complainant continued to throw good money after bad trying to recoup his costs. The cost of the work done by Mr Castles should have been $436,000, not $1,030,000.
Mr Castles managed to recover $650,000 for the complainant in 2008 but it fell well short of his fee. In early 2009 the complainant took his concerns over Castle's alleged overcharging to the Law Society.
Brian Keene, QC, acting for Mr Castles, disputed his client had said that the case was watertight, and it was far from a conventional leaky building claim.
The case, which is being heard by tribunal members Peter Shaw, Mary Scholtens, QC, Judge Dale Clarkson, Wayne Chapman and Christine Rowe, continues today. APNZ