Tallgrass Construction Services

a wholly-owned subsidiary of Tallgrass Economic Development, LLC

Osage Pinnacle Design Group, LLC (dba) Tallgrass Construction Services (TCS) is a tribally owned 8(a) company and HUBZone certified business, providing turnkey construction services for its government and commercial customers. The company is focused on creating job opportunities and relationships that are mutually beneficial to our customers and the Osage nation.

Based in Tulsa, Oklahoma, TCS distinguishes itself as a cost-effective and customer-focused service provider with the capabilities and resources to implement a diverse range of construction projects nationwide. TCS leverages its relationships and many years of experience across a wide variety of design, project, and construction management services.


Representative Construction Services

• Architectural Engineering and Design
• General Prime Contracting
• Pre and Post Construction Services
• Construction Management
• Design-build Construction
• Renovation
• Demolition

Tallgrass Construction Services 8(a) Company Information

SBA 8(a) certification –   305705
DUNS – 962836149
Cage Code/NCAGE – 65GZ0

Applicable NAICS Codes:
236220 (Primary) –
Commercial Institution Construction
236210 –
Industrial Building Construction
541310 –
Architectural Services
541330 –
Engineering Services
238210 –
Electrical Construction
237990 –
Other heavy & civil engineering construction

Download statement of qualifications
View our capabilities statement