Vision Appraisal Online Database
Go to Portsmouth's Property Lookup
Enter your Assessed Property Value in dollars to estimate your taxes for the year.
Go to Property Tax Calculator
Historical Tax Rates & Assessment Ratios
If you move or change your mailing address, please complete and submit this form to the Assessor's Office either In Person, through Email, over Fax, or through the Mail as soon as possible in order to ensure your records are accurate.
Download application here
This application is for Taxpayers who wish to apply for an Abatement from Municipal Property Taxes. The Taxpayer must file the abatement application with the municipality by March 1 following the notice of tax. This application does not stay the collection of taxes; taxes should be paid as assessed. If an abatement is granted, a refund with interest will be made. IRS Form W-9 has been attached to the abatement application and is required by the City in order to process any refund in taxes.
Click Here to view the PDF
Understanding NH Property Taxes Manual
Assessing Standards Board (ASB) Standards
NH Equalization Manual
Code of Ethics
How Your Property is Appraised
State of NH FAQ Link
NH Department of Revenue
NH Board of Tax & Land Appeals
NH Superior Court