GSI has developed a diverse portfolio of public and private sector experience providing services for General Building, Healthcare, Higher Education, Housing, PK-12 Education, Transportation and Water/Wastewater projects.

GSI's expertise encompasses overall Construction, Project and Program Management. Our services include:
- Construction Management
- Project Management
- Estimating
- Scheduling
- On-Site Management
- Bid Phase Development
- Code Review
- Constructability Reviews
- Construction Inspection
- EEO/Diversity Monitoring & Compliance
- LEED Compliance
- Quality Control/Quality Assurance
- Risk Management
- Safety Plan Development
- Specifications Development
- Value Engineering
- Closeout Management
We also perform:
- Design-Build Services
- Engineering Inspection
- General Contracting
- Real Estate Acquisition for Government Clients