
O&S Associates
Experts in new design and restoration engineering
Hackensack, NJ+5
Explore capabilities, project experience, and office locations to build your shortlist.

Experts in new design and restoration engineering
Hackensack, NJ+5

Great experiences build great results

Engineers for a Sustainable Future

Structural Excellence, Engineered for the Future
Washington, DC

We Are Your Engineers and Energy Consultants

Total building solutions in MEP engineering, commissioning, energy efficiency, and building automation.
San Diego, CA

A Legacy Engineered From A Vision
Woodbury, NY+6

Architecture and Structural Engineering.
Torrance, CA

Design Solution for Everyone
New Milford, NJ

Every single project matters. Let us take on yours.
Anaheim, CA

Structural and MEP Engineering Specialists
Miami, FL+1

Engineering with precision, pace and passion
Hoffman Estates, IL

Partners for Architecture

MEP Engineering and Mechanical.
The Bronx, NY

MEP Engineering and Plumbing Design.
Centerville, OH

Built on Trust. Powered by People.

Fast. Affordable. Reliable. Engineering Services.
Port Charlotte, FL

Engineered to Protect
Las Vegas, NV

Full-Scope Engineering. One Trusted Partner.
Irvine, CA

Outstanding Solutions that Save Time & Money
Clarington, OH

Purposed For People.
Richardson, TX

We build for the benefit of all
New York, NY+1
MEP Engineering Specialists
Houston, TX+3

Engineering Together
Columbia, MD+3