BP

Brian Paul Brosnahan, Business Attorney in San Francisco, California

Over 42 years of legal practice · focused on Business, Consumer, and Estate Litigation · 5.0/5 rating from 1 verified client review

PartneratKasowitz Benson Torres LLP

San Francisco, CA

Practicing business in San Francisco since 1984.

42+
Years practicing
5.0 ★
1 client review
1
Bar admission

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Quick answer

Brian Paul Brosnahan is a partner based in San Francisco, CA. The practice focuses on Business, Consumer, and Estate Litigation. Brian has over 42 years of legal experience. Currently practicing at Kasowitz Benson Torres LLP. Rated 5.0 out of 5 from 1 client review.

Based in
San Francisco, CA
Experience
over 42 years
Known for
Business · Consumer · Estate Litigation
  • Handles Business, Consumer, and Estate Litigation matters from San Francisco, CA.
  • Over 42 years of practice as a licensed attorney.
  • Recognized with AV Preeminent.

About Brian Paul Brosnahan: Brian Paul Brosnahan is a partner based in San Francisco, CA. The practice focuses on Business, Consumer, and Estate Litigation. Brian has over 42 years of legal experience. Currently practicing at Kasowitz Benson Torres LLP. Rated 5.0 out of 5 from 1 client review.

Areas of practice

Legal matters Brian takes on

Brian concentrates on business, consumer, estate litigation, insurance, and litigation. Each area below outlines the kind of case Brian handles, typical outcomes to expect, and how the intake process starts.

Business cases in San Francisco, California

Brian takes business matters in San Francisco, 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 Brian agrees to represent you.

Consumer cases in San Francisco, California

Brian takes consumer matters in San Francisco, 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 Brian agrees to represent you.

Estate Litigation cases in San Francisco, California

Brian takes estate litigation matters in San Francisco, 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 Brian agrees to represent you.

Insurance cases in San Francisco, California

Brian takes insurance matters in San Francisco, 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 Brian agrees to represent you.

Litigation cases in San Francisco, California

Brian takes litigation matters in San Francisco, 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 Brian agrees to represent you.

Biography

Meet Brian Paul Brosnahan — business lawyer in San Francisco

Brian Paul Brosnahan is a partner based in San Francisco, CA. The practice focuses on Business, Consumer, and Estate Litigation. Brian has over 42 years of legal experience. Currently practicing at Kasowitz Benson Torres LLP. Rated 5.0 out of 5 from 1 client review.

Brian Paul Brosnahan is a lawyer practicing consumer law, anti trust litigation, commercial litigation and 1 other area of law. Brian received a B.A. degree from Swarthmore College in 1979, and has been licensed for 42 years. Brian practices at Kasowitz Benson Torres LLP in San Francisco, CA.

Working with Brian on a business matter

Brian Paul Brosnahan is a lawyer practicing consumer law, anti trust litigation, commercial litigation and 1 other area of law. Brian received a B.A. degree from Swarthmore College in 1979, and has been licensed for 42 years. Brian practices at Kasowitz Benson Torres LLP in San Francisco, CA.

Who Brian represents

Brian reviews new inquiries case-by-case for business, consumer, and estate litigation matters in San Francisco and the surrounding California area.

Credentials

Education, bar admissions, and languages

  • Harvard University

    J.D. · 1983

  • Swarthmore College

    B.A. · 1979

Jurisdictions

Brian's state bar admissions

  • California

    1984 · ACTIVE

Brian studied at J.D. in Harvard University and B.A. in Swarthmore College.

Law school and academic background

Brian completed J.D. in Harvard University and B.A. in Swarthmore College. Formal legal training is one signal of substantive knowledge — the day-to-day practice Brian runs in California is where that training gets applied to real client questions.

Recognition

Recognition and thought leadership

Brian has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • AV Preeminent

Legal awards and honors

AV Preeminent.

Affiliations

Brian's professional memberships and bar associations

  • State Bar of California

    membership

Locations

Brian Paul Brosnahan's office in San Francisco

Brian's primary office is at 101 California Street, Suite 2300, San Francisco, CA, 94111. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Kasowitz Benson Torres LLP

101 California Street, Suite 2300

San Francisco, CA 94111

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Client feedback

Client reviews of Brian Paul Brosnahan — 5.0/5 rating from 1 verified client review

Every review below is from a verified client of Brian. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in San Francisco.

5.0

1 client review

Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Brian Paul Brosnahan claims this profile.

Read all reviews

Hiring guide

How to hire Brian Paul Brosnahan — what to expect in your first consultation

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

Consultation formats and pricing

Brian charges for the initial consult. That fee is credited toward representation if you retain Brian'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; Brian will tell you what matters and what doesn't.

Questions to ask a business attorney in San Francisco, California

A short list to run through before you commit: How many business 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 Brian

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

Hourly rates, contingency fees, and flat-fee options

Every business 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. Brian confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

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

Frequently asked

Frequently asked questions about Brian Paul Brosnahan

  • How much does it cost to hire Brian for a business case?

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

  • Does Brian offer a free consultation?

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

  • How long do business cases in California typically take?

    Simple business 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. Brian gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Brian take my case if I'm outside San Francisco?

    Brian 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 — Brian 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 Brian?

    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. Brian will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Brian accepting new business clients right now?

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

Areas served

Business attorneys serving San Francisco, Los Angeles and San Diego in California

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

More counsel

If Brian's intake is full or the fit isn't right, these business attorneys in San Francisco handle similar matters. Every profile below is verified and open to consultations.