Overview
In December 2024, Theresha Diallo acquired majority ownership of The Onyx Group of Alexandria, uniting its 40+ year legacy and federal past performance with the vision and leadership of The Diallo Group. Following the acquisition, the firm was rebranded and consolidated under a single name "The Diallo Group" bringing together combined expertise, resources, and capabilities into one strengthened organization. This strategic merger reinforced our depth in federal planning and design while positioning the firm for continued national growth.
Services
Overview:
541330 | Engineering Services
541611 | Management Consulting
541310 | Architectural Services
561210 | Facility Management
541320 | Landscape Architecture
541618 | Other Management Consulting
541360 | Geophysical & Mapping Services
541370 | Surveying & Mapping
541410 | Interior Design Services
Additional Services Offered: Transportation Planning, Real Property Master Planning, Installation Development Plans (IDP), Area Development Plans (ADP), Land Use Planning, Site Planning, Design Charrettes, Campus Planning, Urban Design, Architectural Concept Development, 3D Visualization, Sustainable Planning
Services Provided:
Application Development, Business Case Development, Data Conversion/Migration, Data Model & Database Design, GIS Strategy and Planning, Hosting Services, Implementation, Needs and Requirements, System Architecture and Design, System Integration, Training Services
Industries:
Architecture, Engineering & Construction,Defense,GIS