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Building the Foundation
for Your Innovation

At Mainstay Engineering, we are the bedrock of tech innovation.

Nationally recognized as a leader in civil and structural engineering services, we build the foundation that empowers high-tech and mission critical companies to soar. With our unwavering commitment to precision, quality and excellence, our long-term strategic partnerships with life sciences, semi-conductor, battery, data center and clean energy clients, we provide the essential support and expertise that ensures the best solution for your project.

Trust Mainstay to be your cornerstone.

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Address

CORPORATE HEADQUARTERS OFFICE

1750 Walton Road, Suite 200

Blue Bell, PA 19422

PHILADELPHIA OFFICE

50 South 16th Street, Suite 1700

Philadelphia, PA 19102

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