The firm is owned and managed by its directors and is independent of commercial organisations. In order to broaden the scope of the services available to its clients, and to have the benefit of experience, the firm maintains associations with consulting groups, S.K.Mwea Consulting Engineers, Interconsult (T) Ltd, Consulting Engineers, Maiyo & Partners Consulting Engineers and other independent consortiums. These associations, secured by either long term or ad hoc agreements, provide, inter alia, for technical co-operation, interchange of staff and joint-venture activities, as well as exposes Apex Systems to considerable experience, and the latest developments in the industry.

The practice was founded in March 2001, initially as a sole proprietorship but restructured later to respond to expanded workload and changing operating environment. The firm is to date, a limited liability company with the majority shares held by the professional engineers of the firm.

After its formation in 2001, the firm initially concentrated on buildings. Since then the firm has expanded its engineering designs and construction services in the other types of civil engineering works, including transportation, infrastructure, and effluent treatment. The range of clients has expanded correspondingly to encompass private clients, public departments, and other consulting firms. The firm has since 2004 been incorporated as a share holding company with limited liability. The senior Engineers of the firm hold all the shares. The company has had a steady and a gradual growth since inception with the total staff growth rising from 2 in 2001 to 16 to date.