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About Us

William Simpson & Associates, Inc. has been providing structural engineering services to its clients since 1957. Our practice is built on technical excellence, creativity, dependability, and long-term relationship. We strive to provide the best services, innovative solutions to our clients irrespective of project type or size.

Implementing outstanding engineering skills, decades of experience and with the help of state of the art modeling software, we have incorporated flexibility and function in the design of offices, warehouses, shopping centers, research and development facilities, commercial/industrial parks, custom homes, retaining systems, theme park, shoring, seawalls and marinas.

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Our team is comprised of highly educated and experienced engineers and designers. Learn More

Why Choose Us

Reliable Service

Innovative Sollutions

Cost-effective Design

Around The clock construction support

Services

With over six decades of experience in structural engineering in variety of projects & disciplines, William Simpson & Associates, Inc. continues to offer excellence in the following categories:

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Residential

-Multi-level custom homes
-Retrofit & Remodeling
-Apartment Buildings
-Stair Design

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Commercial & Industrial

-Tilt-up Buildings
-Entertainment & Retail Centers
-Seismic Retrofitting of Warehouses
-Aluminum Structures

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Beach-front & Marina

-Seawalls
-FLoating Docks, Gangways & Piers

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Shoring

-Single & Multi-level shoring

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Infrastructure

-Wood & Steel Bridge Design
-Communication Towers

PROJECT GALLERY

a sample gallery of some of our past projects

Contact

Don't hesitate to contact us

Ready for offers and cooperation

Phone: (949) 206-9929
Fax: (949) 206-9955 
Email: mail@wsase.com

Address

23 Orchard, Suite 250
Lake Forest, CA 92630

Contacts

Email: mail@wsase.com                  
Phone:  (949) 206-9929 
Fax:       (949) 206-9955