What California’s New Legal Marketing Laws Mean for Attorneys in 2026

Starting January 1, 2026, California attorneys will face a significantly more aggressive regulatory environment when it comes to legal marketing. Senate Bill 37 (SB 37) represents one of the most consequential shifts in attorney advertising rules in recent years—and many firms are not prepared for what it actually requires. 

At a high level, the message from regulators is clear: the era of loosely supervised, vendor-driven legal marketing is over. What replaces it is a framework that imposes direct responsibility—and liability—on attorneys for how they acquire clients. 

The End of “Hands-Off” Legal Marketing 

For years, many law firms have relied heavily on third-party marketing agencies to generate leads, manage advertising campaigns, and even control messaging across websites and landing pages. SB 37 fundamentally changes that dynamic. Please find the bill attached here. 

Under the new law, attorneys can no longer distance themselves from their marketing vendors. If your agency publishes non-compliant content—whether on your website, a Google Ads campaign, or a lead generation form—you may be held strictly liable. 

This is a major shift. It means that outsourcing your marketing does not outsource your risk.  

Mandatory Disclosures: A Simple Rule with Serious Consequences 

One of the most immediate and enforceable requirements under SB 37 is the mandate that all marketing communications include a bona fide office address or telephone number. 

This applies broadly, including: 

• Law firm websites 

• Landing pages 

• Pay-per-click (PPC) campaigns 

• Social media advertising 

• Lead capture forms 

The definition of a “bona fide” office is not merely a mailing address. It must be a location where the attorney actually works or meets clients, or an official address of record with the State Bar. 

Many firms—especially those operating virtually or across multiple jurisdictions—will need to reassess how they present their business footprint. 

Failure to comply is not a technical oversight. It is a regulatory violation. 

Digital Advertising Is Now Squarely Regulated 

Another key development is that SB 37 explicitly expands oversight into digital advertising channels. 

This includes: 

• Google Ads and search campaigns 

• Social media platforms (Instagram, TikTok, LinkedIn, etc.) 

• YouTube and video-based advertising 

• Influencer or creator-driven content 

For years, digital marketing existed in a gray area—governed loosely by ethical rules but rarely enforced at scale. That ambiguity is gone. 

California is now treating digital legal marketing with the same scrutiny historically applied to television and radio advertising—if not more. 

Prohibited Content: Where Most Firms Will Get Into Trouble 

Perhaps the most immediate risk area under SB 37 is content. 

The law specifically prohibits: 

• Promising or implying guaranteed outcomes 

• Suggesting “fast cash” or expedited settlements 

• Using actors or dramatizations without clear disclosure 

• Misleading or exaggerated claims about results 

This may sound straightforward, but in practice, much of modern legal marketing already pushes these boundaries. 

Phrases like: 

• “Get paid fast” 

• “We win every case” 

• “Maximum compensation guaranteed” 

…are no longer just aggressive marketing—they are potential violations. 

Even more nuanced messaging—such as implied success rates or selective case results—will require careful review. 

Video and Social Media: A New Enforcement Frontier 

SB 37 also introduces platform-specific expectations that many firms have not considered. 

For example: 

• YouTube ads cannot rely on small, fast-moving disclaimers 

• Disclosures must be clear, readable, and understandable 

• Social media creators cannot impersonate attorneys or create misleading impressions 

This is particularly relevant as more firms experiment with short-form video, influencer partnerships, and content-driven marketing strategies. 

The bottom line: if it looks like legal advice or representation, regulators will treat it as such. 

The Hidden Risk: Lead Generation and “Runner/Capper” Liability 

One of the most underappreciated aspects of SB 37 is how it intersects with California’s long-standing prohibitions on improper client solicitation—commonly referred to as runner or capper laws. 

If your lead generation process is not properly structured, you could face: 

• Regulatory penalties 

• Civil liability 

• Fee disgorgement 

This is especially true for firms relying on: 

• Third-party intake platforms 

• Shared lead vendors 

• Pay-per-lead arrangements 

What may have once been considered standard practice could now expose firms to significant legal risk. 

SB 478 and the Broader Trend Toward Transparency 

SB 37 does not exist in isolation. It is part of a broader regulatory trend in California focused on transparency and consumer protection. 

For example, SB 478 (effective July 1, 2024) requires that all advertised prices include mandatory fees, effectively eliminating “drip pricing.” 

Additionally, new rules affecting advertising on streaming platforms—taking effect in 2026—will regulate ad volume to match the content being viewed. 

Taken together, these laws signal a clear direction: greater accountability, clearer disclosures, and reduced tolerance for aggressive marketing tactics. 

What Attorneys Should Do Now 

Firms should begin preparing immediately. At a minimum: 

• Update website footers to include a compliant office address or phone number 

• Review all landing pages and intake forms for required disclosures 

• Audit advertising copy for prohibited language 

• Evaluate relationships with marketing vendors and lead generators 

• Implement internal review processes for all published content 

This is not just a compliance exercise—it is a strategic shift. 

Final Thoughts 

California has effectively raised the bar for legal marketing. The firms that adapt early will not only avoid risk—they will gain a competitive advantage in a more transparent and regulated environment. 

Those that do not may find themselves facing consequences that extend far beyond marketing. 

At McGonigle Law, we also handle legal malpractice matters, and if you have questions about compliance, exposure, or your current marketing practices, we encourage you to call our office at (800) 713-5260 to discuss your situation.