The pit saw on the property of the farm Valvatna, is the origin of the name Sagvåg. The sawmill is mentioned as early as 1564. The name of the place at that time was Fuglesalt, but soon there is only talk of Saugvog.
In 1852 Haktor Thorsen erected two large warehouses on one of his farms in Sunde and started trading and salting herring. This was the start of an industrial adventure that made Sunde into one of the first industrial communities in Kvinnherad.