Onyx Interiors was started by Tanja Tomaz in 1996 offering a bespoke, turnkey interior design service. The company employs full time project managers and senior designers and has a very strong supplier base.

Onyx Interiors undertakes both local and international projects ranging from corporate, domestic, retail, lodges spas and boutique hotels. 

Onyx Interiors is currently involved with a boutique hotel and several domestic projects. Recently completed projects are the new offices for Anglo Vaal Industries in Illovo, Thandeka Lodge in the Waterberg and homes in Zimbali and Hertfordshire London for an investment banker - to name a few.

Tanja’s work has appeared in several interior design publications and she has been featured on Top Billing, Pasella and most recently on Channel 180 - Designer Portraits. Onyx Interiors also regularly exhibits at Rooms on View and scooped the 2006 Bronze Award for their stand. They also achieved the award for Excellence for their stand in 2008.

Tanja has also been voted by Conde Naste House & Garden as one of South Africa's Top 50 Designers 2006 - 2008.