Atty. Derwin Hayashi

Atty. Derwin Hayashi

Derwin Hayashi is a lawyer practicing personal injury, commercial litigation, administrative law and 1 other area of law. Derwin received a B.A. degree from University of Hawaii, and has been licensed for 44 years.

Wahiawa Wahiawa 44 yrs experience 44 year
Call (808) 207-0816 Book Appointment

Administrative Law & More Attorney · Serving Wahiawa, HI · 44+ Years Experience

Profile Summary

About Derwin Hayashi at a Glance

Derwin Hayashi is a Member based in Wahiawa, Hawaii, practicing at Derwin Hayashi, Attorney at Law. They have 44+ years of legal experience, licensed to practice since 1982. Their practice focuses on contracts, personal injury, business, litigation, and government. Admitted to practice in Hawaii (1982). Educated at William S. Richardson School of Law (J.D., 1982) and University of Hawaii B.A. (—). Serves clients in Wahiawa, HI and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Derwin Hayashi

  • Derwin Hayashi is a lawyer practicing personal injury, commercial litigation, administrative law and 1 other area of law
  • Derwin received a B.A. degree from University of Hawaii, and has been licensed for 44 years
  • Derwin practices at Derwin Hayashi, Attorney at Law in Wahiawa, HI

Practice Areas Explained

Derwin Hayashi's Areas of Legal Practice

Each practice area below reflects the types of cases Derwin Hayashi handles, with a practical overview of what that area of law involves and how it may apply to your situation in Wahiawa.

Contracts in Wahiawa

Derwin Hayashi is one of 76,101 contracts attorneys indexed nationally. Browse contracts attorneys in Hawaii →

Personal Injury in Wahiawa

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Derwin Hayashi is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Hawaii →

Business & Corporate Law in Wahiawa

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Derwin Hayashi is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Hawaii →

Civil Litigation in Wahiawa

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Derwin Hayashi is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys in Hawaii →

Government & Administrative Law in Wahiawa

Attorneys for administrative law, agency hearings, government contracts, licensing, and public benefits.

Derwin Hayashi is one of 131,162 government attorneys indexed nationally. Browse government attorneys in Hawaii →

Jurisdictional Context

Why Local Counsel Matters in Wahiawa

Practicing law in Hawaii. Legal matters in Hawaii are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Wahiawa are typically filed in the local municipal court or the appropriate Hawaii state district court, depending on subject matter and amount in controversy. An attorney licensed in Hawaii brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Hawaii courts without local counsel or pro hac vice admission.

Wahiawa Courts and Legal Process

Choosing a Wahiawa-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional Hawaii attorneys? Browse all attorneys in Wahiawa or all attorneys in Hawaii.

Frequently Asked

Common Questions About Derwin Hayashi

Where is Derwin Hayashi's law office located?
Derwin Hayashi's law practice is located in Wahiawa, Hawaii. The firm is Derwin Hayashi, Attorney at Law. You can contact the office directly through this profile page.
What practice areas does Derwin Hayashi handle?
Derwin Hayashi focuses on contracts, personal injury, business, litigation, government. Each practice area listed reflects experience handling cases of that type in Hawaii.
How long has Derwin Hayashi practiced law?
Derwin Hayashi has 44+ years of legal experience and has been licensed since 1982.
Where did Derwin Hayashi go to law school?
Derwin Hayashi earned their education at (J.D., 1982); (—).
How can I contact Derwin Hayashi for a consultation?
You can contact Derwin Hayashi directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Professional Profile

Why Clients in Wahiawa Choose Derwin Hayashi

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Derwin Hayashi's practice in the field of contracts, personal injury, business, litigation, and government.

Decade-Tested Legal Experience

Derwin Hayashi brings 44+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Broad Practice Area Coverage

Covering contracts, personal injury, and business, Derwin Hayashi can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Wahiawa

A Wahiawa-based practice means Derwin Hayashi attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Derwin Hayashi Handles in Wahiawa

Below is a representative sample of the types of matters Derwin Hayashi has experience with under Hawaii law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Car accident injury claims
Personal Injury
Slip and fall cases
Personal Injury
Wrongful death suits
Personal Injury
Workers' compensation appeals
Personal Injury
Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Derwin Hayashi directly to discuss the specifics of your situation.

Search Reference

How People Find Derwin Hayashi Online

Prospective clients searching for legal help in Wahiawa commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Derwin Hayashi.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Derwin Hayashi directly.

Derwin Hayashi's Practice Areas & Specializations

Education & Law School Background

J.D.
William S. Richardson School of Law
- 1982
—
University of Hawaii B.A.
- In Progress

Bar Admissions & Licensed Jurisdictions

Hawaii
Admitted: 1982

Client Reviews & Ratings — Derwin Hayashi

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