Great guy! Handled my case quickly and efficiently. Gave me great peace of mind knowing he could help me in my situation and not put any more stress on me or my family.
Analyzing Data...
Analyzing Data...
Request a free case review from Law Office of Sean M. O’Neill in Newark, California.
Law Office of Sean M. O’Neill
Newark Personal Injury Lawyer — 7 Client Reviews Analyzed
5.0(7 reviews)Law Office of Sean M. O’Neill is a Personal Injury law firm in Newark, CA, located at 39899 Balentine Dr #200 and reachable at +1510-933-8321. Clients have rated the firm 5.0 out of 5 across 7 public Google reviews, 5 of which include written feedback. The most recent written review is from Alex Franco on Apr 25, 2026 (100 days ago).
How we compiled this: CrashStory aggregates public Google reviews, Colorado crash records from CDOT and local agencies, and firm-provided profile data. We do not endorse any firm. Review intelligence scores are derived from automated sentiment and theme analysis of public reviews — treat them as one signal among many, not a verdict.
7 reviews
Years Experience
Practice Areas
Office Location
Consultation
Each button opens a new tab with a ready-made prompt that references this CrashStory page and the key facts already shown here.
Law Office of Sean M. O’Neill is a personal injury law firm serving clients in Newark, California, located at 39899 Balentine Dr #200 94560.
Review evidence: Clients have left 7 public Google reviews averaging 5.0 out of 5, 5 of which include written feedback. CrashStory scores 12 client-experience dimensions across this review corpus — compare side-by-side with other Newark, California firms before you decide.
Quick signals: the Google Business profile for this firm is verified; 7 photos are public on Google; contact the firm to ask about consultation fees.
Contact Law Office of Sean M. O’Neill at (510) 933-8321 or visit oneillplc.com for a free case review.
7 public reviews and 5 written reviews.
Most recent written review from Alex Franco: Feb 25, 2016 (3812 days ago)
Compare this recency with the other firms you are considering, not just the star rating.
No public owner responses yet
There are no visible owner replies in the current review corpus.
Most recent written review from Alex Franco: Feb 25, 2016 (3812 days ago)
CrashStory does not yet have enough structured review evidence on this firm to call out consistent strengths with confidence.
The newest written review in this dataset is from Feb 25, 2016 (3812 days ago). Compare that recency with the other firms you are considering.
Great guy! Handled my case quickly and efficiently. Gave me great peace of mind knowing he could help me in my situation and not put any more stress on me or my family.
Sean was beyond helpful. He sincerely invested his time in researching my situation. Although I do not doubt he has handled many cases like mine, he treated my scenario with precision and motivation. Sean made it easy to establish trust and confidence in his skills. He remained very professional, accurate, understanding, and approachable. Although he said he was just doing his job, I definitely feel like he went above and beyond to assist me.
The Law Office of Sean M. O’Neill was referred to me by a family friend when my father passed away. This was a very sensitive time for me, and I needed someone I could trust to handle the probate matters. Honestly, I would've never been able to figure out the confusing matters around the estate, estate tax filings, court orders, 401k, life insurance, and everything that entails a probate case without his guidance. Mr. O'Neill carefully walked me through each step of the probate process, explained in detail what we needed to do, and quickly and competently executed on each step of the probate process. I highly recommend the services of Sean O'Neill if you're ever in a similar situation. After doing such a wonderful job, I am now having him establish a Trust, 'm also having him establish a Living Trust, not to mention the paperwork involved in finalizing a divorce... Ill update once finished; but the so far he is holding to the same pattern as before. Quick, Concise, informative. . Thank You Sean.
39899 Balentine Dr #200, Newark, CA 94560
Recent crash data for the area around Law Office of Sean M. O’Neill loads when this section comes into view.
Recent written Google reviews from the last 30 days appear first. Older written reviews stay available through pagination and filtering.
Multi-tag filters use OR matching across all assigned classification tags.
Most recent written review from Alex Franco: Feb 25, 2016 (3812 days ago)
Written Reviews
5
Average Rating
5.00
Reviews (30d)
0
Reviews (90d)
0
Older Archive
5
Assigned Tags (3)
Showing 5 of 5 written reviews.
1 star
0
2 star
0
3 star
0
4 star
0
5 star
5
Reviews older than 30 days are kept available in pages of 12.
Case Type Unspecified
Unknown
Great guy! Handled my case quickly and efficiently. Gave me great peace of mind knowing he could help me in my situation and not put any more stress on me or my family.
Case Type Unspecified
Unknown
Sean was beyond helpful. He sincerely invested his time in researching my situation. Although I do not doubt he has handled many cases like mine, he treated my scenario with precision and motivation. Sean made it easy to establish trust and confidence in his skills. He remained very professional, accurate, understanding, and approachable. Although he said he was just doing his job, I definitely feel like he went above and beyond to assist me.
Case Type Unspecified
Unknown
The Law Office of Sean M. O’Neill was referred to me by a family friend when my father passed away. This was a very sensitive time for me, and I needed someone I could trust to handle the probate matters. Honestly, I would've never been able to figure out the confusing matters around the estate, estate tax filings, court orders, 401k, life insurance, and everything that entails a probate case without his guidance. Mr. O'Neill carefully walked me through each step of the probate process, explained in detail what we needed to do, and quickly and competently executed on each step of the probate process. I highly recommend the services of Sean O'Neill if you're ever in a similar situation. After doing such a wonderful job, I am now having him establish a Trust, 'm also having him establish a Living Trust, not to mention the paperwork involved in finalizing a divorce... Ill update once finished; but the so far he is holding to the same pattern as before. Quick, Concise, informative. . Thank You Sean.
Case Type Unspecified
Unknown
Sean assisted me with a transactional matter, as well as assisting me in the purchase of a new home. He was able to explain the nuances of the transaction and the home purchase in a way that made it easy for me to understand and make informed decisions. He was very flexible and willing to meet on evenings and weekends if something came up. Throughout, he was very professional, knowledgeable, and easy to get along with. I highly recommend Sean O'Neill and will be referring him to all friends/family in need of legal services.
Case Type Unspecified
Unknown
Not long ago, I had my car towed from my apartment complex's parking lot and had to pay an unusually high fee to the towing company regardless of the fact that I lived there. Since I didn't feel that what happened was just, I quickly contacted Sean O'Neill. Sean provided quick, excellent answers to my questions regarding towing company fees. As soon as I wanted to know how much the towing company could legally charge me even under special circumstances, Sean was able to tell me how towing company fees were set and what I could do about it all by text message on the same day. All follow-up questions were answered just as quickly and professionally. I highly recommend Mr. O'Neill's legal services and would love to do business with him if I'm ever in need of counsel again.
Other personal injury lawyers near this office
Browse all personal injury lawyers serving Newark, California.
View All Newark LawyersCompare nearby firms, browse city lawyer directories, and read case-type guides before you decide who to contact.
0 this week, 0 this month
Last review 3811d ago
stable