276 Mansfield Ave, Darien, CT 06820 Property Records

Darien Town property record for 276 Mansfield Ave, Darien, CT 06820

Property Summary

Property Type	Single Family Home
Details	6 bd · 5 ba · 8,972 sqft · built 2003
Lot Size	1.31 acres (57,412 sqft)
Owner	Company Name on File
Last Sale	$4,800,000 (Jul 2025)
Tax Bill	$54,985 (2025)
Deeds & Mortgages	Jul 2025 Line of Credit Jul 2025 Sale & Line of Credit + 1 more
Flood Zone	Zone X (minimal risk)
APN	`DARI M:05 B:43`

Property Details

APN / Parcel Number

Primary APN	`DARI M:05 B:43`
Alternative APN	`9671`

Interior

Bedrooms	6 Beds
Full Baths	5 Baths
Half Baths	2 Half Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	8,972 sqft Living Area
1st Floor Area	4,297 sqft
Basement Area	796 sqft
Unfinished Basement	528 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2003
Effective Year Built	Effective 2003
Architectural Style	Colonial
Exterior Material	Stone
Lot Area	57,412 sqft (1.31 acres)
Garage Type	Attached
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

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

Location & Zoning

Account Number	9671
Street Address	276 MANSFIELD AVE
City	DARIEN
State	CT
Zip	06820-2830
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R2
Legal Block	43
Jurisdiction	DARIEN CT
Township / Civil Division	DARIEN
Census Block Group	1
Census Block	1013
Census Tract	30100

Owner

276 Mansfield Ave is owned by a company that bought it in July 2025.

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

Owner of Record	Company Name on File
Mailing Address	10 E 53RD ST, NEW YORK, NY 10022-5244
Owner Type	Company
Vesting	Corporation

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Jul 10, 2025	Deed of Trust, Mortgage · Line of Credit BRADLEY G PATTELLI
Jul 10, 2025	Warranty Deed, Transfer · Line of Credit BRADLEY G PATTELLI
Jan 6, 2017	Deed of Trust, Mortgage FIRST REPUBLIC BANK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jul 10, 2025 · Amount on File
Deed Sale	Jul 10, 2025 · Amount on File
Prior Sale	Apr 5, 2010 · Amount on File
Deed Document Number	20251180
Deed Book / Page	1775 / 1093
Record Updated	Oct 29, 2026

July 2025: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DARIEN CT
Property Address	276 MANSFIELD AVE, DARIEN, CT 06820-2830
Transaction Type	Mortgage
Record Updated	Nov 25, 2025

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	01775-1111
Date	Jul 10, 2025
Book Page	1775/1111

Lender

Name	BRADLEY G PATTELLI

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	25 Months
Due	Aug 1, 2027

July 2025: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	DARIEN CT
Recording Date	Jul 10, 2025
Property Address	276 MANSFIELD AVE, DARIEN, CT 06820-2830
Document Number	01775-1093
Book / Page	1775 / 1093
Instrument Date	Jul 8, 2025
Instrument	1180
Transaction Type	Transfer
Record Updated	Nov 25, 2025

Transaction

Amount	Amount on Record
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
Address	10 E 53RD ST, NEW YORK, NY 10022-5244

Mortgage

Document Number	0017751126
Date	Jul 10, 2025
Instrument	1775/1126

Lender

Name	BRADLEY G PATTELLI

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	37 Months
Due	Aug 1, 2028

Mortgage

Document Number	01775-1096
Date	Jul 10, 2025
Book Page	1775/1096

Lender

Name	BRADLEY G PATTELLI

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	13 Months
Due	Aug 1, 2026

January 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	DARIEN CT
Property Address	276 MANSFIELD AVE, DARIEN, CT 06820-2830
Transaction Type	Mortgage
Record Updated	Feb 5, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	1605-53
Date	Jan 6, 2017
Book Page	1605/53

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Amount	Amount on Record
Term	360 Months
Due	Jan 1, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 276 Mansfield Ave was $54,985.

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	$54,985.00	$3,552,010 Land $541,800 Building $3,010,210	$2,486,407 Land $379,260 Building $2,107,147
2024	$54,985.00 (+10.05%)
2023	$49,963.00 (+2.21%)	$2,837,170 (-) Land $541,800 Building $2,295,370
2022	$48,884.00	$2,837,170 Land $541,800 Building $2,295,370

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

Flood

FEMA maps place 276 Mansfield Ave in Zone X, an area of minimal flood risk.

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

Wildfire risk around 276 Mansfield Ave is low, with a 0.01% annual chance of 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 80 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

May also be available: T-Mobile.

Cell Coverage

5G (outdoors only) and 4G LTE

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