The Assessors' Office is responsible for administering Massachusetts property tax laws effectively and equitably and for producing accurate and fair appraisals of all taxable property. In Wellesley, the property tax contributes over 85% of the town's operating budget. Taxable property includes not only real estate, but business personal property as well.

Additional responsibilities of the Assessors’ Office are:

  • Payment in lieu of taxes for exempt properties
  • Deed transfers
  • Appeals of overvaluation on property assessments are reviewed and acted on
  • State Appellate Tax Board Cases
  • Motor vehicle excise billing adjustments
  • Statutory Exemptions from property taxes for elderly, blind and disabled veterans
  • Deferral of Property taxes and filing of liens on properties
  • Annual review of chapter land discounts and filing of liens
  • Collection of data as a result of building permits
  • Management of the computerized property database.
The office also works directly with the public . This includes explaining of the Massachusetts tax system, property abatement procedures, tax billing cycles, revaluation statistics and statutory exemptions.

Property Assessments

The Massachusetts Department of Revenue (DOR) mandates that every town fully update its property assessments each year to reflect the current fair market value.  The updated property assessments are submitted to the DOR each year for its review and approval before the tax rate can be set by the town’s Board of Selectmen. 

Every five years the DOR completes a comprehensive audit of the town’s records and procedures for certification.  The DOR’s last certification of the town’s assessments and procedures was for FY 2016.

Personal Property & Motor Vehicle Excise Taxes

In addition to the real property valuations, the Assessors’ Office maintains records on taxable personal property and the motor vehicle excise tax files.

All applications for deferrals, exemptions and abatement requests for real property, personal property and motor vehicle excise taxes can be obtained from and should be filed with the Assessor’s Office.