DS

Daniel Sean O'Sullivan, Child Custody Attorney in Santa Ana, California

Over 36 years of legal practice · focused on Child Custody, Contracts, and Criminal Defense

MemberatDaniel S. O'Sullivan

Santa Ana, CA

Practicing child custody in Santa Ana since 1990.

36+
Years practicing
1
Bar admission

Are you Daniel Sean O'Sullivan?

This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.

Claim this profile — free

Quick answer

Daniel Sean O'Sullivan is a member based in Santa Ana, CA. The practice focuses on Child Custody, Contracts, and Criminal Defense. Daniel has over 36 years of legal experience. Currently practicing at Daniel S. O'Sullivan.

Based in
Santa Ana, CA
Experience
over 36 years
Known for
Child Custody · Contracts · Criminal Defense
  • Handles Child Custody, Contracts, and Criminal Defense matters from Santa Ana, CA.
  • Over 36 years of practice as a licensed attorney.

About Daniel Sean O'Sullivan: Daniel Sean O'Sullivan is a member based in Santa Ana, CA. The practice focuses on Child Custody, Contracts, and Criminal Defense. Daniel has over 36 years of legal experience. Currently practicing at Daniel S. O'Sullivan.

Areas of practice

Daniel's practice areas in Santa Ana

Daniel concentrates on child custody, contracts, criminal defense, divorce, and dui/dwi. Each area below outlines the kind of case Daniel handles, typical outcomes to expect, and how the intake process starts.

Child Custody cases in Santa Ana, California

Daniel takes child custody matters in Santa Ana, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.

Contracts cases in Santa Ana, California

Daniel takes contracts matters in Santa Ana, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.

Criminal Defense cases in Santa Ana, California

Daniel takes criminal defense matters in Santa Ana, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.

Divorce cases in Santa Ana, California

Daniel takes divorce matters in Santa Ana, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.

DUI/DWI cases in Santa Ana, California

Daniel takes dui/dwi matters in Santa Ana, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Daniel agrees to represent you.

Biography

Daniel Sean O'Sullivan, child custody attorney serving Santa Ana

Daniel Sean O'Sullivan is a member based in Santa Ana, CA. The practice focuses on Child Custody, Contracts, and Criminal Defense. Daniel has over 36 years of legal experience. Currently practicing at Daniel S. O'Sullivan. Daniel works from Santa Ana, California and takes on child custody matters across the region.

Daniel Sean O'Sullivan is a lawyer practicing family law, criminal - dui, personal injury and 7 other areas of law. Daniel received a B.A. degree from University of California at Santa Barbara in 1986, and has been licensed for 36 years. Daniel practices at Daniel S. O'Sullivan in Santa Ana, CA.

How Daniel handles child custody matters

Daniel Sean O'Sullivan is a lawyer practicing family law, criminal - dui, personal injury and 7 other areas of law. Daniel received a B.A. degree from University of California at Santa Barbara in 1986, and has been licensed for 36 years. Daniel practices at Daniel S. O'Sullivan in Santa Ana, CA.

The kind of cases Daniel takes

Daniel reviews new inquiries case-by-case for child custody, contracts, and criminal defense matters in Santa Ana and the surrounding California area.

Credentials

Credentials — where Daniel studied and practices

  • Loyola Law School

    J.D. · 1989

  • University of California at Santa Barbara

    B.A. Pol. · 1986

Jurisdictions

Daniel's state bar admissions

  • California

    1990 · ACTIVE

Daniel studied at J.D. in Loyola Law School and B.A. Pol. in University of California at Santa Barbara.

Law school and academic background

Daniel completed J.D. in Loyola Law School and B.A. Pol. in University of California at Santa Barbara. Formal legal training is one signal of substantive knowledge — the day-to-day practice Daniel runs in California is where that training gets applied to real client questions.

Affiliations

Daniel's professional memberships and bar associations

  • State Bar of California

    membership

Locations

Daniel Sean O'Sullivan's office in Santa Ana

Daniel's primary office is at 1505 N. Broadway, Santa Ana, CA, 92706. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Daniel S. O'Sullivan

1505 N. Broadway

Santa Ana, CA 92706

Open in Google Maps

Client feedback

Client reviews of Daniel Sean O'Sullivan

Daniel has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

No reviews yet

Only verified clients who have consulted with Daniel Sean O'Sullivan can leave a review.

Schedule your consultation

Hiring guide

How to hire Daniel Sean O'Sullivan — what to expect in your first consultation

Working with a new child custody attorney should feel structured. Here's how the first two conversations with Daniel usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Daniel charges for the initial consult. That fee is credited toward representation if you retain Daniel's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Daniel will tell you what matters and what doesn't.

Questions to ask a child custody attorney in Santa Ana, California

A short list to run through before you commit: How many child custody matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Daniel

Daniel discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in child custody practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every child custody matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Daniel confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Daniel's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many child custody practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Daniel Sean O'Sullivan

  • How much does it cost to hire Daniel for a child custody case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Daniel walks through the likely range during the consult so there are no surprises.

  • Does Daniel offer a free consultation?

    Daniel charges for the initial consult; that fee is credited toward representation if you retain Daniel's office. Some child custody attorneys offer free consults — check Daniel's current terms during booking.

  • How long do child custody cases in California typically take?

    Simple child custody matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Daniel gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Daniel take my case if I'm outside Santa Ana?

    Daniel is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Daniel will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Daniel?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Daniel will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Daniel accepting new child custody clients right now?

    Daniel's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Child Custody attorneys serving Santa Ana, Los Angeles and San Francisco in California

Daniel handles child custody matters throughout California. Each city below is a direct link into the search page for verified child custody attorneys in that community.

More counsel

If Daniel's intake is full or the fit isn't right, these child custody attorneys in Santa Ana handle similar matters. Every profile below is verified and open to consultations.