Our Projects
Residential
Ghana Gas Residential Complex – Atuabo
Turnkey development of a residential housing complex to support Ghana Gas operations, including swimming pool, tennis courts and other amenities.
Commercial & Corporate Facilities
GNPC Operational Head Office – Takoradi
Full design and construction of a major operational hub for Ghana’s national petroleum corporation – LEED Certified.
PURC Head Office – Accra
Delivery of the new Public Utilities Regulatory Commission head office with advanced MEP systems and sustainable design integration.
GNPC Head Office – Accra (LEED Certified)
Construction of a modern, 18-story, LEED-certified corporate headquarters for the Ghana National Petroleum Corporation (GNPC)
GridCo Head Office - Tema (Green Building)
Construction of a purpose-built, environmentally friendly head office facility for Ghana Grid Company Limited in Tema.
Water Technology/Automation
Keseve Water Treatment Plant – Ghana Water Company Limited
Design and construction of a fully automated treatment facility, operational reliability, and long-term sustainability to boost production ability in a flood-prone region
Healthcare
Agenda 111 – Ahanta West Hospital
Design and construction of a modern healthcare facility under Ghana’s flagship Agenda 111 initiative. Sienna Services was the first contractor to complete its project under the programme – a testament to our efficiency, quality standards, and delivery excellence.
SCADA Control Facilities
National SCADA Control Centre – ECG
Design and construction of a state-of-the-art national SCADA control centre equipped with advanced systems for monitoring and controlling key ECG operational assets.
Ultra-Modern Regional SCADA Control Centre – ECG
Complete upgrade of ECG substations to a fully integrated SCADA system across three key regions and a new ultra-modern Control Centre in Koforidua.
Oil And Gas (Midstream)
Cathodic Protection Systems Audit – Ghana Gas
Condition assessment,audit and Front-End Engineering Design (FEED) of the impressed current cathodic protection (ICCP) system of 20″ gas pipeline.
Piling and Deep Foundation
CIMAF Deep Foundations Project
Executed complex piling and ground stabilization for a major cement plant, ensuring structural resilience and efficient load distribution.
