Real Estate Information
In Connecticut, residential, commercial and industrial properties are assessed at 70% fair market value as of the October 1 valuation, or assessment date. Town wide revaluations are carried out on a five-year cycle including physical property re-inspections occurring every ten. Additionally, all land changes, new construction, or property improvements/demolitions since the last assessment date must be reviewed and re-assessed annually by the assessor. Reassessments are based on the market and consistent appraisal methods the have been established during our most recent revaluation year.
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WHAT IS A REVALUATION?
A revaluation is the town-wide process of updating all real estate assessments to reflect current fair market values to ensure a fair and equitable distribution of the municipal tax burden across all property. A typical revaluation consists of five phases, including 1) Data Collection, 2) Market Analysis, 3) Valuation, 4) Field Review, and 5) Informal Hearings.
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Depending on the town’s revaluation cycle will determine which type of Reval to be performed.
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Physical Full Revaluations: All properties are physically inspected (exterior & interior) by town authorized revaluation personal for accurate listing and verification of the town assessment data. Portland's Full Reval years include: 2001, 2011, 2021, next 2031
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Statistical Update Revaluation: Property assessments are updated based on current market analysis. Only properties that have transferred since prior Reval or have incomplete or questionable assessment data are inspected. All sales must be verified. Portland's Statistical Reval years include: 1996, 2006, 2016, 2026
The effective date of the 2026 Revaluation is October 1, 2026.
Who is the Revaluation firm contracted for Portland’s 2026 Statical revaluation?
The Town of Portland has awarded Tyler Technologies Inc. with the 2026 revaluation contract. Tyler Tech has been working as Portland’s primary revaluation company since before 2001, formally known as Cole Layer Tumble Co.
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Tyler Tech data collectors and field review personal carry town approved, company identification badges including an official “request for inspection” letters from the Assessor containing contact phone numbers to town officials including the Portland Police department.
Am I required by law to allow an interior inspection of my property?
No, you are not required by law to allow an interior inspection of your property. Under Connecticut law, tax assessors or revaluation companies must request permission to enter your home and may not enter any residential structure without the permission of the owner or an adult occupant.
Full inspections are encouraged to ensure the accuracy of the data used towards a fair-realistic property assessment and reduces the chance of over-assessment. Non-responsive or entry refusal may result in questionable or estimated assessment data being used.
How are the assessments determined?
Revaluation companies use Computer-Assisted Mass Appraisal (CAMA) Systems to value properties within a jurisdiction simultaneously for ad valorem (property) tax purposes as of a specific date, (OCTOBER 1, 2026) using standardized procedures and statistical testing all three approaches to value.
CAMA systems use a cost/sales approach allocating value through true market sale transactions for residential properties while commercial property is generally based upon market income rent info obtained from income & expense statements.
When and how will I be notified of the new assessment?
Notice of Re-assessments are scheduled to be mailed by Tyler Technologies in December 2026. The notices are usually sent in batches after their final review and upon the assessor’s approval.
What if I don’t agree with my revaluation assessment?
The revaluation notice of assessments will will explain how to schedule an informal hearing directly with Tyler Technologies to discuss your assessment.
You also have the right to appeal your assessment with the Board of Assessment Appeals upon written submission of a (BAA Application) submitted after January 1, by February 20. March 20 if the Grand List filing date is extended.
Will my taxes increase because of my increased assessment because of the revaluation?
A higher property assessment does not necessarily mean your taxes will increase. Because revaluations are designed to equalize the tax base across the entire town, a higher valued net Grand List generally reduces the overall Mill Rate calculation as the total amount of tax revenue required to run the town largely stays the same from year to year.
That is a Mill Rate?
A Mill Rate is the local multiplier governments use to calculate property tax. One “mill” equals $1 of tax for every $1,000 of assessed property value.
July 1, 2026 tax bills assessments are as of October 1, 2025 Grand List
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Real Estate and Personal Property taxes are calculated at 36.36 Mills.
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Motor Vehicles taxes are capped at the State mill rate of 32.46 Mills.
How are taxes calculated?
Annual taxes are calculated using the Assessment X Mill Rate / 1,000
Example: 200,000 x 36.36 / 1,000 = $7,272.00
DO NOT multiply your 2026 Revaluation Assessment with the current mill rate. The Board of Selectman will set a new mill rate in May during budget referendums.
NOTE FROM THE ASSESSOR:
It is highly recommended to review all data and property features details listed within your assessment record. Inaccurate information may cause inconsistent valuation and wrongful taxation. Please use the following link and contact the assessor (860) 342-6744 to report any outdated or questionable data or to request an inspection.
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Assessment Records Online Database
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Additional Info: ​
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