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Atty. Seth S. Diamond

Atty. Seth S. Diamond

Seth S. Diamond is an accomplished trusts, estates, and fiduciary litigator.

Miami Miami 18 yrs experience 18 year
Call (305) 985-5141 Book Appointment

Profile Summary

About Seth S. Diamond at a glance

Seth S. Diamond is a Partner based in Miami, Florida, practicing at Sloto & Diamond Attorneys At Law. They have 18+ years of legal experience, licensed to practice since 2008. Their practice focuses on trusts, probate, estate planning, real estate, and poa. Admitted to practice in Florida (2008), U.S. Court of Appeals for the Eleventh Circuit (2009), U.S. District Court, Middle District of Florida (2009), and U.S. District Court, Southern District of Florida (2009). Educated at Florida State University College of Law, (J.D., 2008) and University of Florida, Warrington College of Business (B.S.B.A. Marketing, 1996). Serands clients in Miami, FL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Seth S. Diamond is an accomplished trusts, estates, and fiduciary litigator
  • Seth represents trustees, personal representatives, beneficiaries, and other interested persons in complex trust and adversary probate and guardianship proceedings
  • His cases often involve complicated multi-state and international components
  • Seth utilizes skills initially developed as an executive to craft practical solutions to emotionally charged trusts and estates disputes
  • Trained at one of Florida’s venerable law firms, Seth is a thoughtful and passionate advocate for clients in Florida state and federal trial and appellate courts, as well as in mediated and arbitral forums
  • Seth’s experience in litigating real property, debtor-creditor, business, and shareholder disputes allows him to provide clients with a unique perspective when these related issues are injected into their trust and probate matters
  • His clients commonly request that Seth apply his diverse viewpoints when drafting their wills, trusts, marital agreements, and business documents
  • preparing estate plans which protect assets and minimize exposure to future litigation
  • implementing statutory modifications to irrevocable trusts
  • and assisting in the administration of their trusts and probate estates
  • Seth takes pride in his ability to connect with his clients on multiple levels, and frequently becomes a confidant and de facto general counsel to their families
  • Mr. Diamond is the immediate past president and member of the Board of Directors of the Coral Gables-South Dade Estate Planning Council, and is a former Co-Chair of the Anti-Defamation League’s Miami-Dade County Glass Leadership Institute

Representative Matters

  • • Obtained summary judgment in favor of a trustee in a declaratory judgment proceeding to determine the continued validity of a trust that was contested by the beneficiaries of the settlor’s purported later will. • Represented co-trustees in a $20 million trust action by the deceased settlor’s former spouse to set aside a modification to their marital settlement agreement
  • The modified agreement had required the settlor to devise a significant portion of his estate to the former spouse
  • Case resulted in a favorable mediated settlement. • Represented beneficiary in successful removal and surcharge action against former trustee for various breaches of fiduciary duty
  • The judgment of removal and surcharge was affirmed on appeal. • Successful counsel of a trustee to avoid threatened litigation by co-trustee and beneficiaries for alleged breaches of fiduciary duty. • Obtained favorable judgment on behalf of beneficiary in adversary proceeding for construction of a will that did not contain a residuary clause. • Represented professional co-trustees in dispute over how designated shares of acquired and reorganized non-profit organizations and deceased specific individual beneficiaries should be distributed
  • Declaratory judgment proceeding resulted in a favorable negotiated settlement. • Represented foreign client in will contest concerning competing wills allegedly executed in a foreign jurisdiction. • Represented trustee in proceeding brought by second spouse of deceased settlor to set aside their marital agreement and seek an elective share in the settlor’s estate. • Represented foreign client in federal litigation against a major U.S. bank concerning its failure to recognize client as beneficiary of a foreign Decedent’s bank account. • Appellate counsel to court appointed attorney for alleged incapacitated person in incapacity proceeding
  • Representation lead to reversal of incapacity determination by trial court

Reported Cases

  • • Morrison v
  • Martorana, 162 So. 3d 1037 (Fla. 5th DCA Apr. 21, 2015) • Krumholz v
  • Guardianship of H.K., 114 So. 3d 341 (Fla. 3d DCA 2013) Community Involvement: • Bet Shira Congregation, Member of Board of Directors, 2014 – Present, Chair, Legal Committee. • Coral Gables-South Dade Estate Planning Council, Immediate Past President and Member of Board of Directors, 2013 – Present. • Anti-Defamation League, Co-Chair, Glass Leadership Institute, 2010-2011
  • Civil Rights Committee Dade County Bar Association

Practice Areas Explained

Seth S. Diamond's Areas of Practice

Each practice area below reflects the types of cases Seth S. Diamond handles, with a brief overview of what that area of law covers.

Trusts

Seth S. Diamond is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in Florida →

Probate

Seth S. Diamond 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.

Seth S. Diamond is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Florida →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Seth S. Diamond is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Florida →

Power of Attorney

Seth S. Diamond is one of 33,188 poa attorneys indexed nationally. Browse poa 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 Miami 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 Miami or all attorneys in Florida.

Frequently Asked

Common questions about Seth S. Diamond

Where is Seth S. Diamond's law office located?
Seth S. Diamond's law practice is located in Miami, Florida. The firm is Sloto & Diamond Attorneys At Law. You can contact the office directly through this profile page.
What practice areas does Seth S. Diamond handle?
Seth S. Diamond focuses on trusts, probate, estate planning, real estate, poa. Each practice area listed reflects experience handling cases of that type in Florida.
How long has Seth S. Diamond practiced law?
Seth S. Diamond has 18+ years of legal experience and has been licensed since 2008.
Where did Seth S. Diamond go to law school?
Seth S. Diamond earned their education at (J.D., 2008); (B.S.B.A. Marketing, 1996).
How can I contact Seth S. Diamond for a consultation?
You can contact Seth S. Diamond 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.

Education

J.D.
Florida State University College of Law,
- 2008
B.S.B.A. Marketing
University of Florida, Warrington College of Business
- 1996

Bar Admissions

Florida
Admitted: 2008
U.S. Court of Appeals for the Eleventh Circuit
Admitted: 2009
U.S. District Court, Middle District of Florida
Admitted: 2009
U.S. District Court, Southern District of Florida
Admitted: 2009

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