21 Denison Ct, Groton, CT 06340 Property Records

Groton Town property record for 21 Denison Ct, Groton, CT 06340

Property Summary

Property Type	Duplex
Details	3 bd · 2 ba · 1,505 sqft · built 1900
Lot Size	0.09 acres (3,920 sqft)
Owner	Individual Name on Record
Last Sale	$308,000 (Oct 2024)
Tax Bill	$3,606 (2025)
Deeds & Mortgages	Oct 2024 Sale Dec 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`GROT M:168918311710`

Property Details

APN / Parcel Number

Primary APN	`GROT M:168918311710`
Alternative APNs	`168918311710` `13132000`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Units	2 Units
Stories	2 Stories
Building Area	1,505 sqft Living Area

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1900
Architectural Style	Duplex Single
Exterior Material	Aluminum/Vinyl
Roof Type	Gable
Roof Material	Asphalt
Lot Area	3,920 sqft (0.09 acres)
Garage Type	Attached
Loading Dock	Loading Dock

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Gas

Location & Zoning

Account Number	168918311710
Street Address	21 DENISON CT
City	GROTON
State	CT
Zip	06340-3613
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R52
Jurisdiction	GROTON CT
Township / Civil Division	GROTON
Census Block Group	2
Census Block	2015
Census Tract	702400

Owner

Source: Groton Town records, as of June 25, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on Record
Mailing Address	8 AZALEA LN, OLD LYME, CT 06371-2811
Owner Type	Individual
Vesting	Individual(s)

Deeds, Mortgages & Sale History

Date	Document
Oct 22, 2024	Warranty Deed, Transfer
Dec 31, 2020	Warranty Deed, Transfer · Balloon Mortgage WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 22, 2024 · Amount on Record
Deed Sale	Oct 22, 2024 · Amount on Record
Prior Sale	Mar 12, 2008 · Amount on Record
Deed Book / Page	1312 / 362
Record Updated	Sep 20, 2026

October 2024: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GROTON CT
Recording Date	Oct 22, 2024
Property Address	21 DENISON CT, GROTON, CT 06340-3613
Document Number	001312-362
Book / Page	1312 / 362
Instrument Date	Oct 18, 2024
Transaction Type	Transfer
Record Updated	Nov 7, 2024

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	8 AZALEA LN, OLD LYME, CT 06371-2811

December 2020: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	GROTON CT
Recording Date	Dec 31, 2020
Property Address	21 DENISON CT, GROTON, CT 06340-3613
Document Number	1245-158
Book / Page	1245 / 158
Instrument Date	Dec 28, 2020
Instrument	5041170002
Transaction Type	Transfer
Record Updated	May 21, 2021

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	21 DENISON CT, GROTON, CT 06340-3613

Mortgage

Document Number	1245-160
Date	Dec 31, 2020
Book Page	1245/160
Instrument	5041180019

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Balloon Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jan 1, 2051

Tax Assessment & Valuation

Source: Groton Town assessment roll, as of June 25, 2026

Property Jurisdictions

Type	Name
State	Connecticut
County Subdivision	Groton Town
Municipality	Groton City
Unified School District	Groton School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$3,606.00	$124,740 (-) Land $73,143 Building $51,597	$87,318 Land $51,200 Building $36,118
2024	$3,606.00 (+12.06%)
2023	$3,218.00 (+3.41%)	$124,740 (-) Land $51,030 Building $73,710
2022	$3,112.00	$124,740 Land $51,030 Building $73,710

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective September 20, 2026

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 99.1% of the US · lower than 99% of Connecticut
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	GROTON UTILITIES serves 30,200 people · EPA ID CT0590011
Water Source	Surface water
Last State Inspection	Jun 2024
Lead	1 ppb (2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 319 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Xfinity Cable	2,000 / 250
Breezeline Cable	1,000 / 50
Verizon Fixed Wireless	300 / 20
AT&T Fixed Wireless	100 / 20

May also be available: T-Mobile.

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