Atty. William N. Horowitz

Atty. William N. Horowitz

William N. Horowitz is a Principal in Cummings & Lockwood's Private Clients Group and is based in the Bonita Springs office.

Bonita Springs Bonita Springs 51 yrs experience 51 year
Call (239) 390-8067 Email Book Appointment

Profile Summary

About William N. Horowitz at a glance

William N. Horowitz is a Principal based in Bonita Springs, Florida, practicing at Cummings & Lockwood LLC. They have 51+ years of legal experience, licensed to practice since 1975. Their practice focuses on trusts, probate, estate planning, business, and tax. Admitted to practice in Florida (1975). Educated at University of Miami School of Law (LL.M. Taxation, 1976) and University of Florida (B.S., 1972). Recognitions include AV Preeminent. Active member of PROFESSIONAL ORGANIZATIONS •Florida Bar Association. Serands clients in Bonita Springs, FL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William N. Horowitz is a Principal in Cummings & Lockwood's Private Clients Group and is based in the Bonita Springs office
  • Bill focuses his practice in the area of trusts and estates and related tax matters
  • He represents and advises individuals, beneficiaries, fiduciaries and charitable organizations
  • Bill began his legal career in 1976 as an Associate at the law firm of Henderson, Franklin, Starnes & Holt in Fort Myers, Florida, where he became a partner in 1980 and continued his practice with that firm until August 2001 when he joined Cummings & Lockwood
  • Professional Recognition • The American College of Trust and Estate Counsel (ACTEC), fellow • Florida Super Lawyers, 2006 - Present • The Best Lawyers in America, 2001 - Present •Martindale-Hubbell, AV Rated Civic and Philanthropic Activity • Florida Gulf Coast University Foundation, Inc., Chairman Emeritus • Bonita Springs Concert Band, Friends of the Band, Member News & Press Releases • Bonita Springs Office - 2023 Best Lawyers in America and Ones to Watch • 35 Cummings & Lockwood Attorneys in Connecticut and Florida Have Been Named Among The Best Lawyers in America for 2021, 2 Attorneys Received Lawyer of the Year Awards and 8 Attorneys Have Been Identified as the Ones to Watch • Six Cummings & Lockwood’s Trusts & Estates Attorneys Named Florida Super Lawyers in 2020 • 34 Cummings & Lockwood Attorneys in Connecticut and Florida Named Among The Best Lawyers in America for 2020 • Cummings & Lockwood Attorneys in Connecticut and Florida Named 2019 Best Lawyers in America • Seven Cummings & Lockwood’s Trusts & Estates Attorneys Named 2018 Florida Super Lawyers • 32 Cummings & Lockwood LLC Attorneys Named to 2018 Best Lawyers List • Cummings & Lockwood's Trusts & Estates Attorneys Named 2017 Florida Super Lawyers • 21 Cummings & Lockwood Attorneys in Connecticut and Florida Named 2017 Best Lawyers in America • Cummings & Lockwood Attorneys Named 2016 Florida Super Lawyers • Cummings & Lockwood Attorneys in Connecticut and Florida Named The Best Lawyers in America for 2016 • Cummings & Lockwood Attorneys Named 2015 Florida Super Lawyers • Cummings & Lockwood Attorneys in Connecticut and Florida Named The Best Lawyers in America for 2015

Practice Areas Explained

William N. Horowitz's Areas of Practice

Each practice area below reflects the types of cases William N. Horowitz handles, with a brief overview of what that area of law covers.

Trusts

William N. Horowitz is one of 104,171 trusts attorneys indexed nationally. Browse trusts attorneys in Florida →

Probate

William N. Horowitz is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Florida →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

William N. Horowitz is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Florida →

Business & Corporate Law

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

William N. Horowitz is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Florida →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

William N. Horowitz is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in Florida →

Jurisdictional Context

Why local counsel matters in Florida

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

Looking for additional Florida attorneys? Browse all attorneys in Bonita Springs or all attorneys in Florida.

Frequently Asked

Common questions about William N. Horowitz

Where is William N. Horowitz's law office located?
William N. Horowitz's law practice is located in Bonita Springs, Florida. The firm is Cummings & Lockwood LLC. You can contact the office directly through this profile page.
What practice areas does William N. Horowitz handle?
William N. Horowitz focuses on trusts, probate, estate planning, business, tax. Each practice area listed reflects experience handling cases of that type in Florida.
How long has William N. Horowitz practiced law?
William N. Horowitz has 51+ years of legal experience and has been licensed since 1975.
Where did William N. Horowitz go to law school?
William N. Horowitz earned their education at (LL.M. Taxation, 1976); (B.S., 1972).
How can I contact William N. Horowitz for a consultation?
You can contact William N. Horowitz 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.
What awards or recognition has William N. Horowitz received?
William N. Horowitz's notable recognition includes: AV Preeminent.

Education

LL.M. Taxation
University of Miami School of Law
- 1976
B.S.
University of Florida
- 1972

Awards

AV Preeminent

Bar Admissions

Florida
Admitted: 1975

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