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

DATEITEM DUE
February 17, 2023Deadline for residential and commercial status change and processing any Consents to Change
March 1, 2022Last 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 
Protest e-File Layout (PDF)  (NEW for 2023/24)

Parcel Number Format (PDF)

Authorization Image File Specification (PDF)
AR20 Bulk Upload Layout and Specification
AR 20 e-file Layout

ARC AR20 Online Filing Procedures

AR20 Bulk Upload Attachments Naming Convention

AROW AR20 Filing Guide

Duplicate Applications for Correction filed in 2022 for the 2023-24 year 
(updated 6/8/22 - PDF ~1mb)
(updated 5/19/2022 xlsx ~ 13mb)