Mainstay South Carolina
A Greenville, South Carolina-based, civil and structural engineering office
Mainstay SC Acquisition
In January 2025, Mainstay proudly welcomed Professional Engineering Associates (PEA) of South Carolina into our organization. This strategic acquisition unites two highly respected engineering firms, combining over 40 years of expertise in civil and structural engineering. Together, we strengthen our commitment to delivering innovative, client-focused solutions for mission-critical industries while expanding our reach and capabilities to better serve our clients.​
What Does Mainstay SC Provide?
Our South Carolina office offers significant design experience in the industrial, manufacturing, healthcare, and commercial sectors with a presence in South Carolina, North Carolina, Georgia, and Texas. This expands the Mainstay’s geographic footprint and deepens our service capabilities, benefiting clients, partners, and employees.​​​
