Caio A Arellano, Environmental Attorney in San Mateo, California
Over 18 years of legal practice · focused on Environmental, General, and Government
San Mateo, CA
Practicing environmental in San Mateo since 2008.
- 18+
- Years practicing
- 2
- Bar admissions
Practices in
Are you Caio A Arellano?
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Quick answer
Caio A Arellano is an attorney based in San Mateo, CA. The practice focuses on Environmental, General, and Government. Caio has over 18 years of legal experience.
- Based in
- San Mateo, CA
- Experience
- over 18 years
- Known for
- Environmental · General · Government
- Handles Environmental, General, and Government matters from San Mateo, CA.
- Over 18 years of practice as a licensed attorney.
About Caio A Arellano: Caio A Arellano is an attorney based in San Mateo, CA. The practice focuses on Environmental, General, and Government. Caio has over 18 years of legal experience.
Areas of practice
Practice areas handled by Caio A Arellano
Caio concentrates on environmental, general, government, internet, and litigation. Each area below outlines the kind of case Caio handles, typical outcomes to expect, and how the intake process starts.
Environmental
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General
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Government
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Internet
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Litigation
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Environmental cases in San Mateo, California
Caio takes environmental matters in San Mateo, 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 Caio agrees to represent you.
General cases in San Mateo, California
Caio takes general matters in San Mateo, 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 Caio agrees to represent you.
Government cases in San Mateo, California
Caio takes government matters in San Mateo, 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 Caio agrees to represent you.
Internet cases in San Mateo, California
Caio takes internet matters in San Mateo, 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 Caio agrees to represent you.
Litigation cases in San Mateo, California
Caio takes litigation matters in San Mateo, 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 Caio agrees to represent you.
Biography
About Caio A Arellano — Over 18 years of California environmental experience
Caio A Arellano is an attorney based in San Mateo, CA. The practice focuses on Environmental, General, and Government. Caio has over 18 years of legal experience.
Caio A Arellano is a lawyer practicing government, public law, law practice mgmt & technology and 3 other areas of law. Caio received a B.A. degree from University of Michigan in 1999, and has been licensed for 18 years. Caio practices in San Mateo, CA.
Working with Caio on a environmental matter
Caio A Arellano is a lawyer practicing government, public law, law practice mgmt & technology and 3 other areas of law. Caio received a B.A. degree from University of Michigan in 1999, and has been licensed for 18 years. Caio practices in San Mateo, CA.
Clients Caio works with
Caio reviews new inquiries case-by-case for environmental, general, and government matters in San Mateo and the surrounding California area.
Credentials
Caio A Arellano's legal education and bar admissions
University of San Francisco Law School
J.D. · 2008
University of Michigan
B.A. · 1999
Jurisdictions
Caio's state bar admissions
California
2009 · ACTIVE
U.S. District Court,
2008 · ACTIVE
Caio studied at J.D. in University of San Francisco Law School and B.A. in University of Michigan.
Law school and academic background
Caio completed J.D. in University of San Francisco Law School and B.A. in University of Michigan. Formal legal training is one signal of substantive knowledge — the day-to-day practice Caio runs in California is where that training gets applied to real client questions.
Affiliations
Caio's professional memberships and bar associations
San Mateo County and Santa Cruz County Bar Associations State Bar of California
membership
Locations
Caio A Arellano's office in San Mateo
Caio's primary office is at 330 W 20th Ave, San Mateo, CA, 94403-1338. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Caio A Arellano
Caio has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
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Schedule your consultationHiring guide
How to hire Caio A Arellano — what to expect in your first consultation
Working with a new environmental attorney should feel structured. Here's how the first two conversations with Caio usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Caio charges for the initial consult. That fee is credited toward representation if you retain Caio'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; Caio will tell you what matters and what doesn't.
Questions to ask a environmental attorney in San Mateo, California
A short list to run through before you commit: How many environmental 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 Caio
Caio discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in environmental practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every environmental 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. Caio confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Caio's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many environmental practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Caio A Arellano
How much does it cost to hire Caio for a environmental case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Caio walks through the likely range during the consult so there are no surprises.
Does Caio offer a free consultation?
Caio charges for the initial consult; that fee is credited toward representation if you retain Caio's office. Some environmental attorneys offer free consults — check Caio's current terms during booking.
How long do environmental cases in California typically take?
Simple environmental 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. Caio gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Caio take my case if I'm outside San Mateo?
Caio 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 — Caio 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 Caio?
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. Caio will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Caio accepting new environmental clients right now?
Caio's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Environmental attorneys serving San Mateo, Los Angeles and San Francisco in California
Caio handles environmental matters throughout California. Each city below is a direct link into the search page for verified environmental attorneys in that community.
More counsel
Other top-rated environmental attorneys in California
If Caio's intake is full or the fit isn't right, these environmental attorneys in San Mateo handle similar matters. Every profile below is verified and open to consultations.





