Assessor's Office

Mission Statement

The Assessors are responsible for measuring the value of real and personal property and ensuring that owners of such property pay their fair and equitable share of the tax burden based upon those values. The Assessor is also responsible for meeting the certification requirements of the Department of Revenue. To meet these requirements, the assessors are obliged to revalue all properties yearly, and once every five years undergo a state recertification audit. In addition to certification duties, the Board also makes themselves available to assist homeowners and those who utilize public information such as appraisers, realtors, lawyers etc. Our overall mission is public service.

Motor Vehicle Excise 

If you have sold your vehicle and either canceled or transferred your registration you may be entitled to a motor vehicle excise abatement.  

Motor Vehicle Excise Guide

Motor Vehicle Excise FAQ

Motor Vehicle Excise Abatement Application


Reminders

Abatement Applications, Form of List, 3ABC form Submissions and Cyclical and Personal Property Inspections

Exemptions - Tax Relief Programs

Notice: For Fiscal Year 2026, all exemption applications will be mailed directly to all applicants on file who have applied previously or who have notified the Assessor's Office of their interest in applying. Everyone should receive their respective application in the beginning of October.

For more information or if you have any questions, please email the Assessor's Office or call 508-460-3779.

All FY 2026 Exemption applications must be filed by April 1, 2026.

Tax Relief Programs

Personal Property Form of List (FOL)

"Fiscal Year 2027 Form of List" Return of Personal Property Subject to Taxation - (General Laws Chapter 59 §29)

Who Must File a Return

This Form of List (State Tax Form 2) must be filed each year by all individuals, partnerships, associations, trusts, corporations, limited liability companies and other legal entities that own or hold taxable personal property on January 1 unless required to file another local or central valuation personal property return. (Personal property schedules are not open to public inspection.)

All Fiscal Year 2027 Form of List (FOL) must be filed by March 1, 2026.

Fiscal Year 2027 Return of Property Held for Charitable Purposes (3ABC) Forms

Who Must File

This property return (State Tax Form 3ABC) must be filed each year by all charitable, benevolent, educational, literary, temperance or scientific organizations and trusts owning real or personal property on January 1 to receive a local tax exemption on that property under G.L. c. 59, § 5 Clause 3 for the fiscal year that begins the next July 1. Veteran organizations seeking exemption of real or personal property under G.L. c. 59, § 5 Clauses 5, 5A, 5B or 5C must also file this return. (Schedules not open to public inspection.)

All Fiscal Year 2027 3ABC Forms must be filed by March 1, 2026.

Cyclical Inspections

Beginning mid- to late March of each year, the Assessor's Office will be conducting cyclical inspections throughout the city.

As mandated by the Department of Revenue, the Board of Assessors is required to attempt an inspection of all properties to verify the accuracy of our records once every ten years. The assessor will ask to do a full interior and exterior inspection to verify the accuracy of assessing records. At the least, an exterior inspection, front and rear photos are planned for all properties.

Personal Property (Business Assets) Inspections

Starting in June of each year, and during the next few weeks, there will be representatives of Real Estate Research Consultants Inc (RRC) who has been contracted by the Board of Assessors to perform a revaluation of certain businesses and list new businesses in the City of Marlborough for the upcoming tax year.

The scope of this project includes an interior inspection of certain personal property accounts in order to list all taxable personal property items such as inventory, furniture and fixtures, equipment and machinery used in the conduct of business. All personal property is listed and assessed in accordance with Massachusetts General Laws Chapter 59, Section 5.

The Board of Assessors and RRC will appreciate your cooperation in providing the representative with access to your property and the information necessary to undertake this assignment.

For any questions regarding this process, please contact the Assessors' Office at 508-460-3779.