Find engineering consulting firms by capability and location.

Redefining Technical Excellence

Building performance consulting, from first principles to policy.

Plans Design | Calculation Reports | Prime G.C.

Best-In-Class Engineering Expertise

Staffing - Construction - Remediation

Experience. Passion. Excellence.

Built for real world project delivery

Founded in 1980, Aliquot Associates, Inc. is a multi-disciplinary engineering and surveying firm serving public and private clients across the San Francisco Bay Area. The practice offers civil engineering, traffic engineering, and land surveying services from offices in Oakland and Walnut Creek, California. Aliquot brings decades of expertise across diverse project types including public roadways and highways, transit facilities, residential subdivisions, commercial and mixed-use sites, water and sewer systems, stormwater management, and park improvements. With extensive agency-side experience and strong local knowledge across multiple Bay Area jurisdictions, the team provides responsive, customized service from initial planning and feasibility studies through design, permitting, construction, and inspection. Every project is managed directly by a principal, enabling quick decision-making and close coordination with property owners, architects, contractors, and agency representatives.

Powering Insights, Empowering Solutions

Smart solutions in sustainable water infrastructure project delivery

The Expert's Expert.

Bringing Vision to Reality Since 2014

Professional Engineering Services - Mechanical, Electrical, Plumbing, Technology, Fire Protection

Auriga Corporation is a privately held engineering consulting firm established in 1990 and headquartered in Milpitas, California. For over 30 years Auriga has served rail and transit agencies, municipal utilities, the United States federal government, state and local governments, and international organizations across project management, electrical engineering, systems engineering, fare and payment collection, and information technology. Its ISO 9001-compliant project managers and consultants average more than 20 years of experience in their respective disciplines.

BA Inc. provides transportation-related professional engineering design and consulting services to public agencies and private developers. Established in 2004, its practice focuses on drainage and utility design, subsurface utility engineering, encroachment permitting, third-party utility coordination, and construction or project management.

A New Era of Civil Engineers

Engineered to Exceed Expectations

Trusted Engineering Advisors

Optimized and Sustainable Infrastructure Systems

Partners in Reliability, Resilience, Innovation, Sustainability, and Safety

A Modern Program Management Company

Site civil and dry utility engineering, from first feasibility sketch to final inspection.

Designers, Engineers, and Surveyors

Civil engineering and stormwater compliance from planning through project completion.