We Provide Business Focused Solutions

Addon Services, LLC provides business focused solutions. Our customers call us a quick-thinking, quick reacting company and we do everything it takes to give our customers value for their money. Our services include, but are not limited to Construction, Engineering, Information Technology, Training and Technical Manuals and Professional and Administrative Support.


Quality, Reliability, Delivery and Return On Investment

Addon takes the time to understand the many issues and demands faced by our customers. We offer business focused solutions that combine the right balance of quality, reliability, delivery, and return-on-investment. We do this by developing and forming strong partnerships based on trust, mutual respect, and sound business practices.


Socio Status:

8(a), EDWOSB

CAGE Code:


Duns Number:




SBA Case Number:



  • 561110-Professional and Administrative
  • 236220-Construction Services
  • 237990-Other Heavy and Civil Engineering Construction
  • 238210-Electrical and Wiring Contractors
  • 334220-Wireless Communication Equipment Installation
  • 336390-Other Motor Vehicle Parts Manufacturing
  • 423690-Other Electronic Parts & Equipment Wholesalers
  • 541120-Office of Notaries
  • 541214-Payroll Services
  • 541219-Other Accounting Services
  • 541310-Architectural Services
  • 541330-Engineering Support
  • 541340-Drafting Services
  • 541430-Graphic Design
  • 541511-Custom Computer Programming Services
  • 541512-Computer Systems Design Services
  • 541611-Professional and Administrative Management
  • 541620-Environmental Consulting
  • 541690-Other Scientific and Technical Consulting Services
  • 541712-Research and Development
  • 541990-Other Professional, Scientific and Technical Services
  • 561210-Facilities Support Services
  • 561311-Employment Placement Agency
  • 621112-Office of Physicians


GSA MAS Schedule # 47QRAA20D0073

GSA STARS III Contract # 47QTCB22D0573

SeaPort NxG Contract #: N0017821D8926

STARS III Program Manager:

Robert Pastorelli

Contact Us