For sale

$3,150,000

4 Mercia Ln, Greenwich, CT 06830

4beds

4,397sqft

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Residential, Single Family Residence

Built in 1995

0.52 Acres Lot

$3,155,400 Zestimate^®

$716/sqft

$117/mo HOA

What's special

Heated pool

Belle Haven Peninsula-one of Greenwich's most coveted coastal enclaves, where harbor breezes, in-town convenience, and quiet residential character come together in a way few addresses can offer. Privately sited on a tranquil cul-de-sac and close to downtown, this 4-BR, 3.5-BA residence is approx. 4,300 sq ft of graciously scaled living space. Built in 1995 and impeccably maintained, the home opens to a sun-drenched, open-concept kitchen and great room the natural heart of the home, the principal rooms flow effortlessly to a heated pool and beautifully landscaped grounds designed for summer entertaining. The primary suite offers a serene retreat, while the finished third floor and full lower level- easily a 5th BR -invite flexibility for guests, fitness, or quiet work. A rare offering.

36 days

2,331

92

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Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 4
Full bathrooms: 3
1/2 bathrooms: 1

Heating

Natural Gas, Forced Air

Cooling

Central Air

Features

Kitchen Island, Eat-in Kitchen, Vaulted Ceiling(s)
Basement: Finished,Full
Number of fireplaces: 1

Interior area

Total structure area: 4,397
Total interior livable area: 4,397 sqft

Property

Parking

Total spaces: 2
Parking features: Garage
Garage spaces: 2

Features

Patio & porch: Deck
Has private pool: Yes

Lot

Size: 0.52 Acres
Features: Level, Parklike

Details

Parcel number: 021785/S
Zoning: R-20

Construction

Type & style

Home type: SingleFamily
Architectural style: Colonial
Property subtype: Residential, Single Family Residence

Materials

Vinyl Siding
Roof: Asphalt,Shingle

Condition

Year built: 1995
Major remodel year: 2015

Utilities & green energy

Water: Public

Community & HOA

Community

Security: Security System, Smoke Detector(s)

HOA

Has HOA: Yes
HOA fee: $1,400 annually

Location

Region: Greenwich

Financial & listing details

Price per square foot: $716/sqft
Tax assessed value: $1,401,470
Annual tax amount: $14,693
Date on market: 5/28/2026
Inclusions: Washer/Dryer, All Kitchen Applncs

Estimated market value

$3,155,400

$3.00M - $3.31M

$16,190/mo

Price history

Date	Event	Price
5/28/2026	Listed for sale	$3,150,000+296.2%$716/sqft
Source: Greenwich MLS, Inc. #125111 Report a problem
10/16/2000	Sold	$795,000$181/sqft
Source: Smart MLS #98081945 Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$17,321 +3.5%	$1,401,470
2024	$16,728 +2.6%	$1,401,470
2023	$16,308 +0.9%	$1,401,470
2022	$16,159 +6.6%	$1,401,470 +11.3%
2021	$15,159 +0.2%	$1,259,090
2020	$15,134 -0.8%	$1,259,090 +0.2%
2019	$15,256 +2.3%	$1,256,640
2018	$14,916 -1.2%	$1,256,640
2017	$15,104 +1.6%	$1,256,640
2016	$14,865	$1,256,640

Find assessor info on the county website

Monthly payment

Est. payment

Payment breakdown

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All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.

HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.

Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.

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Climate risks

Neighborhood: 06830

Getting around

24 / 100

Car-Dependent

32 / 100

Somewhat Bikeable

Nearby schools

GreatSchools rating

7/10
Julian Curtiss School
Grades: PK-5Distance: 1.5 mi
8/10
Central Middle School
Grades: 6-8Distance: 2.9 mi
10/10
Greenwich High School
Grades: 9-12Distance: 2.2 mi

Schools provided by the listing agent

Elementary: Julian Curtiss
Middle: Central

Source: Greenwich MLS, Inc.. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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