2026 Revaluation

The Assessor's Office is currently in the process of a town-wide revaluation. Notices of the value change are expected to be mailed to all homeowners sometime in late August.  Property owners will have the opportunity to schedule an informal hearing with our contract Assessors to discuss your new assessment.  Please check to make sure that our office has your correct mailing address on our property look up page.  Click here if you need to update your address.   

Every year the Town of Derry Assessing Department monitors qualified sales and the real estate market in general in Derry.  The Assessor’s Office does this to make sure that current assessments are close to 100% of full, fair market value as required by the State of New Hampshire Department of Revenue Administration.  For the final 2025 tax year, Derry's median ratio was calculated to be 91.6%. 

Based on these studies, the Assessing Department will complete a town-wide revaluation to all properties values for the 2026 tax year.  Town wide assessments will be adjusted to account for the increasing real estate market. 

Property Sales by Style (April 1, 2025 - March 31, 2026) - TBD

Assessed Values by Owner - TBD

Assessed Values by Location - TBD

Frequently Asked Questions About Property Updates

Why must we go through another valuation update?
State law requires a full value reassessment at least every five years. This is so that assessments will reflect current market value, Statewide. As the real estate market changes (up or down), if assessments stay the same, this puts our assessments out of sync with the current market. The Town strives to maintain assessments between 90% and 110% of current market values when conducting a revaluation or update. 

What if I disagree with the new assessment?
If you would like to discuss the 2026 assessed value of your property, please call the Assessing Department at (603) 432-6104 to schedule an informal hearing. These appointments will be available sometime in September. Taxpayers may request either an informal hearing conducted over the phone, or in-person.

The normal abatement and appeal process is still available to all taxpayers. This involves filing an application after receipt of the fall tax bill (Nov/Dec 2026) and before the following March 1, 2027, requesting that the Town Council and assessors reconsider the assessment. If it is found that the application has merit, an abatement of taxes will be issued. If a taxpayer is still dissatisfied after the decision of the Selectmen, they may file with the Board of Tax & Land Appeals in Concord, or the Superior Court, but not both, prior to September 1, 2027.

What is the new tax rate?
The new tax rate will be established by the Department of Revenue Administration sometime in November. An increase in property value does not necessarily mean an increase in your property tax bill.  DO NOT USE the current tax rate to estimate your taxes.  An increase in town-wide value generally results in a decrease to the tax rate.

How was the assessment determined?
The Assessing Department will utilize qualified market sales (list will be located on this web page) from April 1, 2025  through March 31, 2026.  The Outline below will show the predominate property types with the estimated ratio of assessments to sale prices.  The first ratio is what the Town of Derry’s valuation before the update and the second shows the correction in assessments and the current assessment to sale price: