senyo-tetteh2Senyo A. Tetteh

Principal Partner


Senyo A. Tetteh founded S. Tetteh + Associates(STA) in 1990 at the tail end of an eight-year stint of architectural practice in London, UK. Since relocating to Accra, Ghana and registering the company in 1995, Senyo has led the firm in building an extensive project portfolio that reflects both public and private sector experience.

With a focus on modern, well-considered design and international standards of practice, Senyo has overseen STA’s rise to notoriety in recent years following a series of wins at local and international design competitions.

The story of STA continues to evolve, as does Senyo’s role in it. Today, as Managing Director, he provides the practice with vital strategic direction while ensuring that the team remains committed to the tenets on which it was founded. He also plays the all-important function of being the firm’s chief advocate beyond its walls.

alexander-sosuAlexander Sosu

Senior Architect/Partner


Alexander Sosu was appointed in 2004 as a young but capable architect to help bring about the fundamental changes necessary to respond to STA’s growth agenda.

He has since progressed to Partner of the firm while developing into a highly skilled Designer and adaptable Contract Administrator with experience in overseeing building projects from start to finish.

As Head Designer, Alexander played a key role in four (4) of STA’s successful architectural design competition entires; including the last three (3) competitions organized by the Architects Registration Council of Ghana.

His strong strategic vision and ability to harness the strengths of a team and systems in order to achieve objectives have been an invaluable part of the firm’s recent success.

Alexander has a keen interest in research into contemporary practice and growth of the profession.

oku-tettehOku Tetteh

Business Development Manager


Oku Tetteh is one of the more recent additions to the team having joined STA in May, 2016. His responsibilities include: seeking out new business and project funding opportunities, serving as a liaison between the Design team and potential clients or suppliers, overseeing day to day office operations, payroll processing, and diary management for the Principal. Oku has a heart for seeing sustainable and climate-specific design embraced more locally by clients and Architects alike.

augustine-owusu-ansahAugustine L. Owusu-Ansah



Augustine Owusu-Ansah joined S. Tetteh + Associates in 2012 and has since worked primarily on design and construction supervision of STAs projects. He has been heavily involved in the Advantage Place 12-storey office building project, Records Centre for Ghana Revenue Authority  and the competition-winning entries for the Judicial Training Institute, Ghana School of Law Campus and South Legon Apartment Development. He also manages visualisation and graphical presentation at STA and has a keen interest in the study and design of public space and the exploration of Ghanaian architectural identity.

IMG_4163Elom Acku Alfonso



Elom Alfonso joined S. Tetteh & Associates as an Assistant Architect in 2013. Possessing an eagerness to increase her knowledge of the profession and a clear knack for design, she has become a great asset to the team.

In 2016, Elom was successfully inducted into the Ghana Institute of Architects in part due to her varied project experience gained while at STA. This includes her involvement in remodelling and extension works for the Ghana Revenue Authority Headquarters and Legon Medium Tax Payer’s Office. She continues to contribute to the success of the firm in the capacity of Administrative Architect.

Elom is particularly interested in the relationship between humans and the built spaces with which they interact.


Davida Ammah

Davida Ammah

Assistant Architect


kingsford-odameKingsford Odame



abraham-ansongAbraham Ansong