McCune Law Group
“Overall this attorney and staff did a fantastic job for my case, got me a top dollar settlement, and in a good time frame.”
Best Probate Attorneys in Ontario, CA
15 firms listed · 5 in Ontario · 2 open 24/7 · 5 open weekends · 14 rated 4.5+
Data verified October 31, 2026
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Vistas Law Group
“It seemed so overwhelming to me, but George made it so that I feel comfortable asking questions and didn't pressure me.”
Rancho Law Group With Javier Palma
“But Lucy in the Downey office was amazing she answered all my questions patiently and guided me not only with the house deed but with a bankruptcy.”
Blucker Law & Associates
“Will definitely use them in the future and have been recommending their services to my clients!”
Law Offices of Forrest F. Wolfe
“He guided me on the best way to handle my will, so that my estate would not be contested by an estranged sibling.”
Atlantis Law Firm
“John answered all of our questions and helped us to identify the best Trust for our situation.”
The 15 firms listed for Ontario, CA handle probate and estate administration for families. What each states about the services it offers executors comes from its own website; ratings and quotes come from public reviews.
Area overview: Ontario, CA
Of the 15 firms we list here, 5 are in Ontario itself and 10 come from towns including Rancho Cucamonga (5, 6 mi), Upland (3, 6 mi) and Claremont (1, 7 mi). The firms on this page are rated from 4.3 to 5.0 across 1,286 reviews; 9 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the firms on this page are "trust", "patient" and "communication". 2 are open around the clock; 5 are open on Saturdays and 2 on Sundays. The practice areas the firms on this page list most often on their websites are estate planning (4), bankruptcy (3), business law (3), personal injury (3) and probate (3). 4 have a BBB rating of A or A+. Domain records put 11 websites of the firms on this page at ten or more years old; the oldest dates from 2004. 2 offer urgent consultations; 1 offers payment plans; 7 offer a free initial consultation and 1 is family- or locally-owned. 2 have Spanish-speaking staff. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Which probate firms listed for Ontario publish details online?
14 of the 15 firms on this page have a website on file, and most of those describe the estate work they take on. It is the quickest way to tell a general practice from one that administers estates every week. What you read there is the firm's own description.
Law Offices of Fernando D. Vargas
“He went to bat for me, made me feel heard, made sure I saw only the best doctors for my care, which was very extensive and listened when I needed someone to understand what I had been through.”
Law Offices of Fernando J Bernheim
“Very good lawyer I recommend him”
Law Offices Of Tanya L Willis
“I will be using her services in the future and would recommend her to anyone who needs legal assistance and advice regarding Trust and Wills.”
Priscilla Solario Law
“Was tremendously helpful, couldn't have felt more comfortable through this all.”
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Law Office of Terrence Fantauzzi
“Alicia,Elizabeth and Terrence were hopeful and I'm forever thankful for finding them.”
CKB Vienna
“Being a novice at legal matters, he was very understanding and went out of his way to explain complex legal dealings in a down to earth/easy to comprehend manner.”
Gaudy Law
“Start to finish easy to work with, transparent on the process, professional and could tell they care about doing things right.”
C.S. Scarcella & Associates
“Thank you for all you do, very pleased with the work Chris does, also the amazing comunication we had with Monica.”
Clavel Law
“I would definitely recommend him and his team on any probate matter, in fact, I already have recommended him.”
Why these companies made our list
What clients say about firms in and near Ontario
- “If you’re dealing with probate and need someone who is both informative and supportive, I highly recommend reaching out to him.” — client of Rancho Law Group With Javier Palma
- “Excellent customer service, I would recommend them to all in need of legal representation for probate or estate planning.” — client of Gaudy Law
- “Thank you to attorney Taylor for being professional, personable and extremely helpful with all of the questions and phone calls that my family had at our free consultation in regards to probate.” — client of Law Offices Of Tanya L Willis
- “I have worked very closely with Robert on numerous occasions and he is continuously very knowledgeable and well versed in probate.” — client of Clavel Law
- “Rancho Law Group handled our probate case. They were very communicative and professional.” — client of Rancho Law Group With Javier Palma
Excerpts from public reviews of the firms listed on this page.
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