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, 2023*Last day to file Grievances


*Deadline extended to April 3, 2023.

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

ARC AR20 Online Filing Procedures

AR20 Bulk Upload Attachments Naming Convention

AROW AR20 Filing Guide

Duplicate Applications for Correction filed in 2023 for the 2024-25 year
(Updated 5/5/23 – PDF ~2mb)
(Updated 5/5/2023 xlsx ~13mb)