The project will add 15 automated sheds, with operations expected to begin in the first half of 2029.
The Nairobi-based roaster is bringing origin-roasted Kenyan coffees from cooperatives, smallholder farmers and estates to consumers across the UK.
ABP has secured the stake through the purchase of Benoni Holding Corporation, which previously held an interest in the processor.
The company is concentrating on premium, high-value fruit categories with strong growth potential in international markets.
The new K4 Factory is expected to expand Kilombero Sugar’s production capacity, increase demand for sugarcane and support Tanzania’s push for greater sugar self-sufficiency.