Judge Rolf M. Thorsen: Professional Background and Legal Expertise

Biography

The Hon. Rolf M. Thorsen is a justice on the Westchester County Supreme Court in the 9th Judicial District of New York. He was elected to the bench on November 7, 2023.


The 9th Judicial District encompasses Dutchess, Orange, Putnam, Rockland, and Westchester counties.


Prior to his election, Thorsen was a judge on the Rockland County Court, a position to which he was elected in 2014. During his tenure there, he held assignments as an acting judge on the Westchester County Court (2016), an acting judge on the Rockland County Surrogate’s Court (2017 to 2023), and an acting justice on the Rockland County Supreme Court (2017 to 2023).


Thorsen earned a B.S. in business administration from the State University of New York at Albany in 1983. He then completed a J.D. at the State University of New York at Buffalo School of Law in 1986. He is licensed to practice in New York (1987) and New Jersey (1987).


After graduating from law school, Thorsen began his legal career as a sole practitioner in his own private practice in Garnerville. He worked in that capacity until his election to the bench, supplementing his practice with service as a court attorney for the Hon. William P. Warren of the Rockland County Family Court (1997 to 2014) as well as a town justice for the Clarkstown Town Court (2008 to 2014).


His memberships have included the New York State Magistrates Association, the Rockland County Magistrates Association, the New York State Bar Association, the Rockland County Bar Association, the Rockland County Women’s Bar Association, and the Rockland Collaborative Lawyers Network. He has also been involved with the Rockland Community College Paralegal Advisory Board.


He is a recipient of the Kenneth P. Zebrowski Civic Service Award from the Clarkstown Democratic Committee.


Thorsen is registered as a Democrat.

Recent Cases by Hon. Rolf M. Thorsen

On October 20, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Oct 20, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 23, 2026

On October 19, 2026 a mat-uncontested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Oct 19, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Uncontested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 21, 2026

On September 30, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Sep 30, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 19, 2026

On September 11, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Sep 11, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 15, 2026

On August 7, 2026 a mat-uncontested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Aug 07, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Uncontested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Sep 17, 2026

On July 28, 2026 a mat-uncontested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 28, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Uncontested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 14, 2026

On July 24, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 24, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 23, 2026

On July 22, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 22, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 08, 2026

On July 15, 2026 a mat-uncontested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 15, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Uncontested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 08, 2026

On July 9, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 09, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 05, 2026

On July 1, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 01, 2026

Status

Closed

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Sep 22, 2026

On July 1, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jul 01, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 19, 2026

On June 30, 2026 a mat-uncontested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 30, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Uncontested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Aug 27, 2026

On June 29, 2026 a mat-contested-post judgment cm case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 29, 2026

Status

Foreign,Sister-State Judgment

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested-Post Judgment CM

Practice Area

Creditor

Matter Type

Judgment Enforcement

Case Last Refreshed

Oct 20, 2026

On June 22, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 22, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Sep 30, 2026

On June 16, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 16, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 15, 2026

On June 15, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 15, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 15, 2026

On June 15, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 15, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Sep 29, 2026

On June 12, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 12, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Aug 21, 2026

On June 10, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 10, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 14, 2026

On June 10, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 10, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 02, 2026

On June 8, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 08, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 05, 2026

On June 5, 2026 a mat-contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 05, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Mat-Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Jun 05, 2026

On June 5, 2026 a matrimonial - contested case was filed in the jurisdiction of Westchester County. Judge Rolf M. Thorsen presiding.

Filed

Jun 05, 2026

Status

Active

Judge

Hon. Rolf M. Thorsen Trellis Spinner 👉 Discover key insights by exploring more analytics for Rolf M. Thorsen

Court

Supreme

County

Westchester County, NY

Court Category

Matrimonial - Contested

Practice Area

Family

Matter Type

Divorce,Separation

Case Last Refreshed

Oct 09, 2026