Representative Page

All Representatives and Attorneys filing on any property as a representative, where you are not the owner, must register and obtain a representative number from ARC. Please email arcoperations@nassaucountyny.gov for further information. 

ARC Representative Due Dates

DATE
ITEM DUE

February 10, 2025

Deadline for residential and commercial status change, withdrawals of applications 2025/26 and processing any Consents to Change for tax year 2025/26.

March 3, 2025

Last day to file Grievances

 

Forms For Attorneys and Other Representative
Adobe Acrobat format (PDF)

Form AR 10 (PDF)
Authorization to Represent an Individual Taxpayer (PDF)

Residential Rent Roll Template (PDF)

Commercial Rent Roll Template (PDF)

Form AR 70 (PDF)
 ARC Stipulation

Form AR 71 (PDF)
 ARC Residential Stipulation

ARC Stipulation Discontinuance (PDF)

Consent to Change Attorney Template (PDF)

 Bulk Upload layout and Specification 
ARC Filing Procedures (PDF)
 
Protest e-File Layout (PDF)
 
Parcel Number Format (PDF)
 
Authorization Image File Specification (PDF)

AR20 Bulk Upload Layout and Specification
AR 20 e-file Layout


Forms For Attorneys and Other Representative
Adobe Acrobat format (PDF)

 ARC AR20 Online Filing Procedures
 
AR20 Bulk Upload Attachments Naming Convention
 
AROW AR20 Filing Guide 

 (Updated 4/3/2024 – PDF ~2mb)

Applications for Correction filed in 2024 for the 2025-26 year
(Updated 4/3/2024 xlsx ~13mb)