But the clothing manufacturing business became tough as cheaper Asian imports arrived, so Batts had garments made in China and other countries.
He now employs just two quality controllers for this side of the business although 50 people work for Derek Corporation which has expanded into the tourist, apparel, souvenirs and household textiles sectors.
In 2000, The Derek Corporation left the building and moved to Avondale's Rosebank Rd where it operates from a 1.4ha site today.
But Batts said a trust he is connected to still owns the building in the city.
The Derek Corporation's imported T-shirts, jackets and knitware are sold in tourist shops throughout New Zealand, all managed from Avondale.
But in the city, a number of tenants, such as architects, marketing advertising and recruitment companies now lease space in Cathedral House between Gen I Tower and the AMI building.
KiwiRail occupied areas on a number of floors but it has now centralised operations at its new headquarters in Parnell. So Batts said space was available on various levels, refurbished ready for leasing.
He worked with Hulena Architects to change the lobby. Photographs taken in 1910 show the building when it was used by Collins Bros Publishers, selling book and stationery items. On upper levels, timber floors and horizontal and vertical steel beams have been exposed, along with brickwork, to bring more character to the interior.