366 Mansfield Ave, Darien, CT 06820 Property Records

Darien Town property record for 366 Mansfield Ave, Darien, CT 06820

Property Summary

Property Type	Single Family Home
Details	4 bd · 6.5 ba · 6,564 sqft · built 1986
Lot Size	1.38 acres (60,505 sqft)
Owner	2 Trust Names on Record
Last Sale	$2,300,000 (Jun 2019)
Tax Bill	$33,984 (2025)
Deeds & Mortgages	May 2023 Refinance Nov 2021 Transfer + 2 more
Flood Zone	Zone X (minimal risk)
APN	`DARI M:05 B:37B`

Property Details

APN / Parcel Number

Primary APN	`DARI M:05 B:37B`
Alternative APN	`9863`

Interior

Bedrooms	4 Beds
Full Baths	6.5 Baths
Half Baths	1 Half Bath
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	6,564 sqft Living Area
1st Floor Area	2,698 sqft
Basement Area	1,464 sqft
Unfinished Basement	1,464 sqft
Game Room	Game Room
Fireplaces	1 Fireplace
Fireplace	Fireplace
Central Vacuum	Central Vacuum

Exterior

Year Built	Built 1986
Effective Year Built	Effective 1986
Architectural Style	Colonial
Exterior Material	Wood Siding
Lot Area	60,505 sqft (1.38 acres)
Garage Type	Basement
Parking Spaces	3 Parking Spaces
Deck Area	Deck Area

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air with A/C
Heating Fuel	Oil

Location & Zoning

Account Number	9863
Street Address	366 MANSFIELD AVE
City	DARIEN
State	CT
Zip	06820-2112
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R2
Legal Block	37B
Jurisdiction	DARIEN CT
Township / Civil Division	DARIEN
Census Block Group	1
Census Block	1013
Census Tract	30100

Owner

Source: Darien 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	2 Trust Names on Record
Mailing Address	366 MANSFIELD AVE, DARIEN, CT 06820-2112
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
May 11, 2023	Deed of Trust, Mortgage · Stand-Alone Refinance CITIZENS BANK
Nov 22, 2021	Quit Claim Deed, Transfer Quitclaim
May 24, 2021	Deed of Trust, Mortgage · Stand-Alone Refinance JPMORGAN CHASE BANK NA
Jun 27, 2019	Warranty Deed, Transfer · Stand-Alone First Mortgage JPMORGAN CHASE BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 27, 2019 · Amount on Record
Deed Sale	Jun 27, 2019 · Amount on Record
Prior Sale	Dec 14, 1988 · Amount on Record
Deed Book / Page	1655 / 144
Last Transfer Date	Nov 19, 2021
Transfer Doc	1732-564
Record Updated	Sep 20, 2026

May 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DARIEN CT
Property Address	366 MANSFIELD AVE, DARIEN, CT 06820-2112
Transaction Type	Mortgage
Record Updated	Jun 1, 2023

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	001753-486
Date	May 11, 2023
Book Page	1753/486

Lender

Name	CITIZENS BANK
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded
Term	301 Months
Due	Jun 1, 2048

November 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	DARIEN CT
Recording Date	Nov 22, 2021
Property Address	366 MANSFIELD AVE, DARIEN, CT 06820-2112
Document Number	1732-564
Book / Page	1732 / 564
Instrument Date	Nov 19, 2021
Transaction Type	Transfer
Record Updated	Dec 10, 2021

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

May 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DARIEN CT
Property Address	366 MANSFIELD AVE, DARIEN, CT 06820-2112
Transaction Type	Mortgage
Record Updated	Jun 10, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	1718-704
Date	May 24, 2021
Book Page	1718/704

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2051

June 2019: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DARIEN CT
Recording Date	Jun 27, 2019
Property Address	366 MANSFIELD AVE, DARIEN, CT 06820-2112
Document Number	1655-144
Book / Page	1655 / 144
Instrument Date	Jun 19, 2019
Transaction Type	Transfer
Record Updated	May 21, 2021

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
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

Mortgage

Document Number	1655148
Date	Jun 27, 2019
Instrument	1655/148

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount Recorded

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	Connecticut
County Subdivision	Darien Town
Unified School District	Darien School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025	$33,984.00	$2,195,340 (+29.68%) Land $777,070 Building $1,418,270	$1,536,738 Land $543,949 Building $992,789
2024	$33,984.00 (+13.99%)
2023	$29,813.00 (+4.63%)	$1,692,950 (+2.37%) Land $647,570 Building $1,045,380
2022	$28,493.00	$1,653,680 Land $647,570 Building $1,006,110

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective November 28, 2025

FEMA Flood Zone	Zone X minimal risk
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 80% of the US · above 55% of Connecticut
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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	AQUARION-EASTERN FAIRFIELD COUNTY private · serves 351,756 people · EPA ID CT0150011
Water Source	Surface water
Last State Inspection	Jun 2025
Lead	Under 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	24 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 51 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Frontier Fiber	7,000 / 7,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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