(844) 810-4210


8am – 5pm

We’re The Total Package

Based in the Inland Empire, Castillo Harper is a full-service law firm providing criminal, civil, and internal affairs defense in Southern California

Three Locations To Serve You

Main Office

6848 Magnolia Ave.
Suite 200
Riverside, CA 92506
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South Office

31570 Railroad Canyon Rd.
Suite 200
Canyon Lake, CA 92587
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West Office

123 E. 9th St.
Suite 318
Upland, CA 91786
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Exceptional Attorneys Handling Exceptional Cases.

Castillo Harper, APC is a full-service law firm that prioritizes personalized and efficient representation. Located in the heart of Riverside, our practice strives to make the legal process as convenient and comfortable as possible for the people we represent. We’re proud that much of our clientele finds us by referral or word of mouth, and that many clients use our firm for multiple legal needs.

Our attorneys deliver comprehensive legal support in numerous practice areas, including family law, criminal defense, employment law and civil litigation. No matter how difficult your case might seem, we work tirelessly to protect your rights in pursuit of a successful result. Whatever challenge you are facing, we are here to provide the peace of mind that comes with trustworthy legal representation.

After hiring Kasey Castillo, I was acquitted of the ridiculous charges against me, my termination was overturned, I was returned to the job that I love and dedicated myself to, and most importantly, my good name was restored!

J. Boros
San Bernardino County
Sheriff’s Department

Kasey Castillo represented me in a work-related issue a few years ago. Kasey has an outstanding work ethic and always went above and beyond of what I expected of her. She is truly one of the best. I would highly recommend Kasey…

Beaumont Police Department

Kasey Castillo is an incredible lawyer. She saved my job and got me reinstated as a supervisor. She is very thorough and knowledgeable. She is a fierce lawyer that is not afraid to roll up her sleeves and fight with powerful administrators

Beaumont Police Department

Passionate Lawyers With A Strong Reputation in The Community

There are three reasons why our firm is recommended throughout Southern California:


Firm member Brandi Harper has earned an AV® Preeminent™ Peer Review Rating by Martindale-Hubbell® in recognition of her legal ability and ethics by attorneys familiar with her work. 


Firm members have been nominated for The Rising Star Award by Super Lawyers and made the list in 2019, 2020, 2021, and 2022.


Personalized attention and tailored advocacy to all clients’ goals and values. Our hands-on approach and open communication ensure clients have a clear understanding of their entire case.

How Can We Help You?

First Responder Representation

Proudly representing and protecting those who protect us.

Criminal Law

We understand everyone makes mistakes, and everyone is entitled to fair representation.

Family Law

We can help with divorce, child custody, or child support issues to ensure your rights are protected fairly.

Employment Law

We can help with issues from overtime pay and wage discretion, as well as employee harassment.

We’re Passionate About What We Do…

Brandi Harper and Kasey Castillo talking
Kasey Castillo and Brandi Harper by patrol car

New Team Member

Matthew Camphuis


Matthew is a PORAC Legal Defense Fund (LDF) panel attorney and a California Correctional Supervisors’ Organization (CCSO) panel attorney. As such, he handles all manners of administrative disciplinary cases, from interrogation through appeal, and CCW denial appeals. Prior to his time at Castillo Harper, APC, Matthew worked as in-house counsel for a large correctional officers’ association, representing officers during internal affairs investigations, defending against adverse actions, at pre-disciplinary hearings, and by litigating appeals before the State Personnel Board.

In addition to his employment defense practice, Matthew is part of the Firm’s Civil Litigation Team, and assists clients with Probate matters. He began his law career focusing on tax controversy by helping taxpayers fight the powerful IRS and the California Franchise Tax Board. He also has significant estate planning experience and has helped families and individuals plan for end-of-life or worst-case incapacity scenarios.

The Latest From Castillo Harper