Death sparks Vic building authority probe

An inquiry will examine Rob Karkut's death and claims of a toxic workplace culture at the regulator. (AAP)

Victoria's building regulator will be investigated over allegations of a toxic workplace culture, after a long-time employee took his own life.

The Community and Public Sector Union is demanding an independent inquiry into the Victorian Building Authority's workplace culture after the death of Rob Karkut, who had worked as a building inspector at the regulator for 16 years.