MULTI-MILLIONS
recovered. hard fought. hard earned.
Welcome to The Guerrero Firm
Your Case Is Our Cause, Every Time
Your Fight. Our Purpose.
At THE GUERRERO FIRM, we believe every accident victim deserves fierce advocacy, personalized care, and unwavering dedication. For more than 20 years, our lead attorney Rendell M. Guerrero has stood beside injury victims, fighting tirelessly for the justice and compensation they deserve.



Why We Do What We Do
Born from Witnessing Injustice
Early in his career, Rendell saw firsthand how accident survivors struggled—facing pain, uncertainty, and powerful insurance companies alone. In Philippines "Kuya" means big brother. That experience became his calling: to be Kuya
Rendell
these families desperately needed.
Outworking the Opposition
Insurance giants count on victims giving up. We don't. Rendell's commitment goes beyond the courtroom—he's visited clients in hospitals, at their homes, worked late into the night on case files, and stood firm through every challenge. With the resources to take cases all the way to trial and verdict, we refuse to be outworked.
Battle-Tested Experience
Hundreds of successful cases have sharpened Rendell's ability to navigate even the most complex claims. Whether negotiating settlements or arguing in court, his experience has secured substantial compensation that helps families rebuild.
What You Can Expect
Personal Attention
Your case receives the focus it deserves. We listen to your story, understand your needs, and build a strategy around you—not a template.
Clear Communication
No legal jargon. No runaround. Just honest, straightforward updates at every stage.
Proven Results
Our track record demonstrates our commitment: maximum compensation, every time.
Our Personal Injury Services
Serious Injuries Need a Serious Plan
From freeway collisions near the 57/60 interchange to warehouse injuries around City of Industry, we handle cases that change lives. As a personal injury law firm in Diamond Bar, we know local roads, insurers, and courts—and we build each case for maximum leverage.
Why Choose Us
Focused Advocacy, Proven Results
Choosing the right accident lawyer in Diamond Bar matters. Clients hire The Guerrero Firm for:
- No Fee Until You Win
- Multi-Millions in Recoveries
- Undefeated in Auto Accident Cases
- Personalized Attention from a tight-knit team
- Graduate of the Trial Lawyers College
We blend aggressive litigation with approachable counsel—clear communication, prompt updates, and strategic action from day one.
Serving Diamond Bar & Beyond
Local Counsel for the San Gabriel Valley
With offices in Diamond Bar (Valley Vista Dr.) and Pomona (North Gary Ave.), we serve clients within the Southern California area. We are local to Diamond Bar,
Pomona,
West Covina, La Puente, Walnut, Rowland Heights,
Rancho Cucamonga, and Orange County. We understand the crash patterns on the Grand Avenue SR57/CA60 bottleneck, and neighborhood corridors where serious injuries occur. If you prefer to meet in person or virtually, we make it easy.
Client Testimonials
Real Experiences, Real Outcomes
Free Consultation & Contact
Ready to Fight Back?
If you've been injured in an accident, you don't have to face this alone. Contact Rendell M. Guerrero and THE GUERRERO FIRM today.
Your case isn't just another file to us—it's our cause, our purpose.

