Looking for an advertising agency in California to drive local brand awareness and sales? We’ve evaluated hundreds of agency profiles, customer reviews, and success stories to create this list of leading agencies. Explore our directory and narrow your search by hourly rate, minimum budget, team size, and other criteria.
Our Verified Agencies are Trusted by Top Brands:
Best California Advertising Company Rankings
3 Companies-Rankings updated: September 09, 2026
DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.
Blue Giant is a full-service production and creative agency based in Los Angeles, specializing in commercial, short, documentary, TV, and digital media content. Known for delivering powerful visuals and compelling storytelling, the agency supports brands, studios, and clients in amplifying their message...
Top Services:
Video Production
Advertising
Social Media Marketing
Web Design
VR/AR
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Location
Los Angeles, California
Number of Employees
Under 49
Minimal Budget
$10,000 - $25,000
Portfolios Count
1 Project Listed
Blue Giant Services
Video Production
Advertising
Social Media Marketing
Web Design
VR/AR
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Stop Drowning in Data Start Driving Scalable Growth
eBoost Consulting helps great companies grow through search and social paid advertising. Since 2005 our team of digital marketing experts has been running highly successful digital marketing campaigns with a focus on innovation, results and customer satisfaction...
Top Services:
Advertising
PPC
Social Media Marketing
Digital Marketing
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Location
El Segundo, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$10,000 - $25,000
eBoost Consulting Services
Advertising
PPC
Social Media Marketing
Digital Marketing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Agentology
Brown Law Group
Classy
GOVX
Humanscale
Project Evo
San Diego Magazine
Spy Optic
Vavi
Waste Management
Data sourced from the agency's DesignRush profile
eBoost Consulting Reviews & Testimonials
Lia Haberman Review from Google
5.0★
Lia Haberman's Review Sourced from Google
Eboost really knows their stuff and came up with a comprehensive paid social proposal to target each stage of the marketing funnel. They also managed to resolve some Facebook issues we'd been having for months that no one else had been able to fix. It's been a pleasure working with them.
Jill Ramsey Review from Google
5.0★
Jill Ramsey's Review Sourced from Google
Eboost & Evan made it a point to not spend our money too early. He was conscientiousness in making sure we had taken a few steps before we started our business relationship. He also gave us advice and suggested additional contacts to help us scale to the next level. He's quick to email back and happy to have a zoom meeting. We appreciate him a lot and look forward to working with Eboost very soon.
Karuna Scheinfeld Review from Google
5.0★
Karuna Scheinfeld's Review Sourced from Google
eBoost has been an AMAZING agency for us, they helped us strategize and execute our paid social advertising, resulting in better ROAS than we ever expected. I have recommended them to entrepreneurs and small business owners multiple times!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
CustomCreatives is an Agoura Hills, California based full-service digital marketing and graphic design agency founded in 2004. The firm specializes in delivering integrated branding, web development, SEO, PPC, social media advertising, and display marketing solutions for small to mid-sized businesses and...
Top Services:
SEO
PPC
Digital Marketing
Social Media Marketing
Advertising
Show more
Location
Agoura Hills, California
Number of Employees
Under 49
Average Hourly Rate
$100/hr
Minimal Budget
$10,000 - $25,000
Custom Creatives Services
SEO
PPC
Digital Marketing
Social Media Marketing
Advertising
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Realtor.com
CBS
Kitchen Cabinet Companies
Data sourced from the agency's DesignRush profile
Custom Creatives Reviews & Testimonials
Zahur Lalji Review from Google
5.0★
Zahur Lalji's Review Sourced from Google
Best in class. They are very direct and to the point. They will give you what they say. If your a true entrepreneur, you need to have these guys as your partner.
Joseph Geromini Review from Google
5.0★
Joseph Geromini's Review Sourced from Google
Custom Creatives Delivers Speed, Support, and Game-Changing OutcomesWorking with Rahul and the great team at Custom Creatives has been a game-changer for my business. Their ability to deliver high-performing websites with speed and precision is unmatched. From the moment we started, their support has been exceptional—always responsive, always focused on real outcomes.What truly sets them apart is their cutting-edge Voice AI technology, which is making a massive impact in the industry. It’s not just about innovation; it’s about results. If you’re looking for a team that understands how to drive success and impress the world, Custom Creatives is the partner you need.
Katherine S King Review from Google
5.0★
Katherine S King's Review Sourced from Google
If you're looking to really build a successful agency and want solid training and support—not just fluff—I highly recommend going to GSD and working with Cody, Raul, and their team.Working with Raul and Cody has been a transformative experience for me. Raul has given me the confidence to truly pursue my dream of owning my own agency. His depth of knowledge is remarkable, and despite my 20+ years in marketing and experience working with major brands, he constantly reminds me of my worth and never lets me forget who I am. His encouragement is genuine, and he truly cares about the success of the people he coaches. Raul is a blessing to work with.Cody, too, brings incredible strength and care to the table. Together, they’ve created a program that I return to time and time again. If you're someone looking to build your brand or agency, their framework is invaluable for building a successful business and scaling it. They also provide ongoing training and support—so as long as you're active, they will continue to help you grow.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews