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Multi Family OfficeNo direct investingLAST VERIFIED Aug 2026 · 1 SOURCES

3 Dimensional Wealth Advisory

Multi family office in Locust Valley, United States, founded 1875.

Identity

HEADQUARTERS
Locust Valley, United States
OFFICES
Laurel Hollow, NY, United States
FOUNDED
1875

Overview

Headquartered in Locust Valley, United States, the firm is listed as a multi family office founded in 1875. Other offices: Laurel Hollow, NY, United States; 2 people are named on its team.

People

  • Monroe M. Diefendorf Jr.
    Founder / CEO · source
  • Monroe M. Diefendorf III
    President · source

Classification

Multi Family Office. Provides family-office services to several families and invests or allocates their money — through mandates, its own programmes or club deals. Advice-only firms are not listed. How family capital is classified →

FAQ

3 Dimensional Wealth Advisory is a multi family office based in Locust Valley, the United States, founded in 1875.

3 Dimensional Wealth Advisory does not publicly state whether it invests directly or through funds.

Key people at 3 Dimensional Wealth Advisory include Monroe M. Diefendorf Jr. (Founder / CEO) and Monroe M. Diefendorf III (President).