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21 Grove Avenue

Groton, Connecticut 06355

ACTIVE$3,250,000
Beds
4
Baths
5 | 1
SqFt
5,686
Acres
0.95
Year Built
2007
Matt Caiola

Matt Caiola

Luxury Real Estate Advisor

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About This Home

First time being offered is 21 Grove, an exquisite property located on the bank of the Mystic River, a convenient walk into town. This only 18 years young home is designed to assimilate within its historic neighbors yet is elevated with the superior craftsmanship and modern updates. You'll find a well-conceived floor plan that invites both intimate family living and grand-scale entertaining. Notable features: - Bluestone patio overlooking the river for al fresco dining & relaxing - Impeccably landscaped grounds encompassing nearly one acre - En suite bedrooms that promise privacy and convenience for family and guests alike. -Two primary bedrooms; one conveniently located on the first floor - Six fireplaces that provide warmth and ambiance during New England's colder months. - River access for launching kayaks and paddleboards, when the warmer months arrive. Your positioning couldn't be better with your proximity into town, gorgeous views, easy access via backroads to I-95, and walkability of the scenic River Road to which you are at the very start of. This is quite the rare find to have this level of class & comfort in a home with no work needing to be done and numerous benefits being so close to vibrant downtown Mystic and all it has to offer. Own your own piece of history in one of the most prestigious neighborhoods of Mystic. Home is ready for you to turn the key, enter and stay.

Key Facts

City/Town
Groton
Neighborhood
Mystic
Property / Style
Single Family · Cape Cod
Year Built
2007
Days on Market
270 days
Beds
4
Baths
5 full · 1 half
Living Area
5,686 sq ft
Lot Size
0.95 acres
Garage / Parking
3 garage · 6 total
Property Taxes
$26,601 / Annually

Market Snapshot

The Groton Market

Single Family · trailing 12 months

Median Days on Market

42

45 active listings

Median $ / Sq Ft

$331

45 active listings

Sale-to-List Ratio

100.0%

292 sales

How this home compares

List Price

$3.25M

vs $585,000 median

5.6× the median

Price / Sq Ft

$572

vs $331 median

72.8% above median

Days on Market

270 days

vs 42 days median

228 days longer than median

Based on 45 active and 292 closed sales (trailing 12 mo) of single family in Groton. Source: SmartMLS · As of July 27, 2026.

Location

21 Grove Avenue, Groton, Connecticut

Property + 12 nearby

Estimate Your Payment

Estimated Monthly Payment

Rates: Freddie Mac PMMS via FRED
$19,871

per month

  • Principal & Interest$16,571
  • Property Taxes$2,217
  • Insurance$1,083
  • HOA$0

Estimates only. Actual rates, taxes, insurance, and HOA fees vary. Consult a lender for current rates.

Location

City/Town
Groton
Neighborhood
Mystic
County
New London

Residence

Property Type
Single Family
Style
Cape Cod
Year Built
2007
New Construction
No/Resale
Living Area
5,686 sq ft
Below Grade
1,678 sq ft

Schools

Elementary
Per Board of Ed
High
Fitch Senior

Interior

Heating
Hot Air
Heat Fuel
Oil
Cooling
Central Air
Fireplaces
6
Laundry
Main Level
Laundry Location
Off of half bath on first floor
Appliances
Gas CooktopOven/RangeMicrowaveRefrigeratorFreezerDishwasherDisposalCompactorWasherDryer
Basement
FullHeatedFully FinishedCooled
Interior Features
Audio SystemAuto Garage Door OpenerCable - Available

Exterior & Lot

Lot Size
0.95 acres
Zoning
RS-12
Garage / Parking
3 garage spaces6 total parking spacesAttached GarageOff Street ParkingDrivewayGravel
Waterfront Details
Walk to WaterView
Water Source
Public Water Connected
Sewer
Public Sewer Connected
Construction
Hardie Board
Roof
Asphalt Shingle
Foundation
Concrete
Exterior Features
GrillLightingStone WallUnderground SprinklerPatio
Lot Description
Level Lot

Listing & Financials

Property Taxes
$26,601 / Annually
Days on Market
270
MLS #
24136440
MLS Status
Active

Similar Properties

Homes with a close match in area, property type, and price.

Listed By

Heather Gianacoplos

(860) 908-4705

Compass Connecticut, LLC

(860) 572-9099

This information is believed to be accurate, but without warranty.

The IDX display contains information sourced from SmartMLS, Inc. as of 7/27/2026. This information is provided for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing or leasing. Data is deemed reliable but is not guaranteed accurate by the MLS, the listing broker, the listing agent, or Matt Caiola. Buyers and tenants should independently verify all information that matters to their decision.

Map locations may be approximate. Any offer of compensation, if applicable, is made only to participants of the MLS where the listing is filed. ©2026 Smart MLS, Inc. All rights reserved.

Data last updated on 7/27/2026 at 9:10 PM UTC.