How to Appeal Property Taxes in New London County, CT

Overview

For a home in New London County, Connecticut, the key point is that property tax assessment and appeal are handled by the city or town where the property is located, not by a county-wide assessor. A homeowner in New London, Norwich, Groton, Waterford, East Lyme, Stonington, Montville, Ledyard, or another municipality in the county usually works with that municipality's Assessor and Board of Assessment Appeals.

In Connecticut, real estate is generally taxed on an assessed value equal to 70% of market value. The local mill rate is then applied to that assessed value. An appeal usually challenges the value, classification, or exemption decision for the property; it does not usually challenge the mill rate itself.

Important: This is general educational information, not legal advice. Deadlines, forms, hearing practices, and revaluation procedures change. Verify current requirements with the official Assessor and Board of Assessment Appeals for the municipality where the property is located.

Who handles assessments and appeals

1) Municipal Assessor

The Assessor's Office typically:

• maintains the property record card,
• applies exemptions,
• updates the grand list,
• and may answer questions about how a value was calculated.

If the property was recently revalued or changed because of permits, construction, demolition, a sale review, or a data correction, the assessor's record is the first place to look.

2) Board of Assessment Appeals

If a homeowner believes the assessment is too high or otherwise incorrect, the usual formal local appeal is to the municipality's Board of Assessment Appeals (sometimes abbreviated BAA).

In Connecticut, this board is the standard first appeal step for real estate assessments.

3) Superior Court

After a BAA decision, Connecticut law may allow a further appeal to Superior Court under specific statutes. Court appeals are more formal and have strict timing and service requirements. Anyone considering that step should verify the current statute and official court instructions promptly.

Typical steps for a homeowner in New London County

Step 1: Find the correct local office

Because there is no county-wide property tax appeal office, start with the official website for the city or town where the property sits. Look for:

• Assessor
• Board of Assessment Appeals
• Grand List
• Revaluation
• Property record card or field card

Step 2: Review the property record carefully

Check the assessor's data for factual errors, such as:

• square footage,
• lot size,
• bedroom/bath count,
• finished basement area,
• condition or quality grade,
• garage/outbuilding details,
• waterfront or view adjustments,
• land classification,
• exemption status.

A straightforward factual error can sometimes be the strongest appeal point.

Step 3: Compare the assessment to market evidence

Connecticut assessments are tied to market value, so useful evidence often includes:

• recent sales of similar nearby homes,
• an independent appraisal,
• photos showing condition problems,
• contractor estimates for major defects,
• evidence of external problems such as wetlands, flood exposure, access issues, noise, or easements.

For Connecticut appeals, sales closest to the relevant assessment date are often the most persuasive. The assessment date is commonly tied to the October 1 grand list, but the municipality's notice should be checked for the exact context.

Step 4: Ask whether an informal review is available

In some Connecticut municipalities, especially during a revaluation cycle, there may be an informal review process before the formal BAA appeal. That step may be handled by the assessor or by a revaluation contractor working for the municipality.

An informal review does not always replace the formal appeal deadline. If an informal discussion is underway, the homeowner should still confirm whether a separate BAA filing is required to protect appeal rights.

Step 5: File the formal appeal on time

For real estate in Connecticut, a written appeal to the Board of Assessment Appeals is often required by a local filing deadline that is commonly in February following the grand list year. Many municipalities use a February 20 deadline for real estate appeals, but local notices and any current statutory changes should always be checked.

The municipality may require:

• a local appeal form,
• owner and property identification,
• the value being challenged,
• and supporting documents.

Step 6: Prepare for the hearing

Boards often hear real estate appeals in March, though local scheduling can vary. Some municipalities may ask for documents in advance. Others may allow the owner to present evidence at the hearing.

A concise presentation usually helps:

• identify the factual errors,
• explain why the market value is overstated,
• provide comparable sales,
• and show photos or repair estimates if condition is an issue.

Step 7: Read the decision and calendar the next deadline

If the BAA denies relief or grants only a partial change, the next step may be a court appeal under Connecticut law. Court deadlines are short and formal, so the written decision date and mailing date matter.

Deadlines and notices

For New London County homeowners, the deadlines are usually driven by Connecticut law plus the municipality's own posted forms and schedules.

Common patterns in Connecticut include:

• October 1 as the annual assessment date for the grand list,
• a formal BAA filing deadline often in February for real estate,
• and local hearings often held in March.

However, homeowners should confirm all of the following on the official municipal site:

• the exact filing deadline,
• whether the form must be mailed, hand-delivered, or filed electronically,
• whether evidence must be submitted before the hearing,
• whether an agent or appraiser needs written authorization,
• and whether there is a separate process for motor vehicles or personal property.

If the property is in a revaluation year, the notice may include instructions for an informal review and separate instructions for the BAA. Missing the formal appeal deadline can be costly even if informal discussions are still happening.

Evidence that is often relevant

The most useful evidence usually focuses on value as of the relevant assessment date and on whether the assessor's data is accurate.

Often helpful

• Comparable sales of similar homes in the same municipality or neighborhood
• Appraisal report prepared for lending, estate, divorce, or other purposes
• Photographs of deferred maintenance or damage
• Repair estimates for roof, foundation, plumbing, electrical, or structural problems
• Survey, site, or environmental information showing wetlands, steep slope, flooding, or access limitations
• Closing statement if the home sold near the valuation date and the sale appears arm's-length
• Evidence of assessor errors in size, features, condition, or land description

Sometimes helpful, depending on the property

• Income and expense information for owner-occupied multi-family property
• Evidence of unusual restrictions, easements, or legal encumbrances
• Permit history showing a project was unfinished or overstated on the assessment date

Usually less persuasive by itself

• General statements that taxes are too high
• Complaints about the municipal budget or mill rate
• Sales that are too old, too far away, or not truly comparable
• Distressed or non-arm's-length sales without strong explanation

What to do next

1. Identify the municipality where the property is located.
2. Go to that municipality's official website and open the Assessor and Board of Assessment Appeals pages.
3. Download or request the property record card and any appeal form.
4. Check the record for factual mistakes.
5. Gather recent comparable sales, photos, and repair documentation.
6. Confirm the current filing deadline and whether supporting documents must be submitted ahead of time.
7. File the appeal before the deadline and keep proof of submission.
8. Prepare a short, fact-based hearing presentation.
9. If the result is unfavorable, review the written decision promptly and verify any further rights under Connecticut General Statutes.

For a New London County homeowner, the most important practical step is to use the correct city or town process. There is no single county appeal office for property assessments in this part of Connecticut.