DesignRush industry experts identified the leading business consulting firms in California helping businesses with risk management, investment opportunities, company restructuring and more. Compare listings by average rates, team size and reviews to pick the best partner for your needs.

Best California Business Consulting Company Rankings

55 Companies-Rankings updated: September 10, 2026

DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.

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  • Southport Marketing

    Create Unforgettable Brand Experiences

    Southport Marketing is a Camarillo-based experiential marketing agency that creates memorable, high-impact brand activations, live events, sponsorships, and consumer experiences that connect audiences with brands nationwide. Their full-service approach blends strategic creativity with seamless execution to...

    Top Services:

    • Advertising
    • Event Marketing
    • Branding
    • Business Consulting
    • Market Research
    • Show more
    Location
    Camarillo, California
    Number of Employees
    Under 49
    Visit WebsiteView Profile
    4.5 4.5 (4)

  • US Data Corporation

    Marketing Solutions That Grow Your Business - Not Your Overhead.

    One of the nation's largest warehouses of high-quality consumer and corporate data is made available to enterprises by US Data Corporation. Every time they collaborate with us, customers take use of our comprehensive offering of goods and services, huge library of tactics, and smart prospect modelling...

    Top Services:

    • Social Media Marketing
    • Advertising
    • Digital Marketing
    • Email Marketing
    • Business Consulting
    • Show more
    Location
    Westlake Village, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    3.2 3.2 (5)

  • PwC

    Building trust in society and solving important problems.

    We’re a network of firms in 155 countries with over 284,000 people who are committed to delivering quality in BPO, project management, assurance, advisory, IT, and tax services...

    Top Services:

    • Market Research
    • BPO
    • HR Outsourcing
    • Accounting
    • Business Consulting
    • Show more
    Location
    Orange County, California
    Number of Employees
    1000 & Up
    Visit WebsiteView Profile
    4.6 4.6 (74)

  • Hajana Technologies

    Enterprise-Grade AI Built for Growing Businesses.

    Hajana Technologies is an AI & workflow automation partner helping U.S. businesses eliminate manual admin tasks. Engineered by enterprise systems architects, we build custom autonomous AI agents, multi-agent workflows, and RAG systems to scale your operations without expanding headcount...

    Top Services:

    • AI Development
    • Software Development
    • IT Services
    • CRM Consulting
    • ERP Consulting
    • Show more
    Location
    Fresno, California
    Number of Employees
    Under 49
    Visit WebsiteView Profile
    5.0 5.0 (4)

  • AngelytiX Consulting

    We Help Early-Stage Businesses Scale

    We help start-ups with three service areas: strategic coaching and advisory for a more low-touch point need, a full-service outsourced CFO offering from accounting to financial planning and raising capital, and a specialized digital marketing offering...

    Top Services:

    • PPC
    • Advertising
    • SEO
    • Social Media Marketing
    • Digital Marketing
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $135/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

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