Paciulli, Simmons & Associates is made up of a team of accomplished and dedicated individuals specializing in civil engineering, land planning, land surveying, cultural resources, and environmental and wetland services.

For over 260 years, the firm has provided quality consulting services to public and private sector clients including land developers and builders, educational institutions, parks and recreational facilities, transportation agencies, and federal, state and local government agencies.

Paciulli, Simmons & Associates has been recognized as the oldest firm in the Washington Metropolitan area, dating it back to 1744. Visit our Firm History section for a complete historical background of the firm.