OFA Group, through its subsidiary, provides architectural services that include design and fit out services for commercial and residential buildings.

Its design services include specific conceptualized design with layout plans; detailed design drawings; advice relating to budgetary consideration, optimal use of space, the materials, fittings, furniture, appliances, and other items to be used to produce a preliminary design plan and quotation for clients' considerations.

The company's fit out services comprise installing protective materials to cover floors or walls; installing or constructing partition walls, windows and window frames, and decorative fittings, furniture or fixtures; and installing plumbing systems, as well as installing switches, power outlets, telephone wiring, computer outlet covers, and other electrical and wiring works.

OFA Group was incorporated in 2024 and is headquartered in the Cheung Sha Wan, Hong Kong.