18 Birch Mill Road
Killingworth, Connecticut 06419
- Beds
- 4
- Baths
- 2 | 1
- SqFt
- 3,700
- Acres
- 3.50
- Year Built
- 1988
- Property Type
- Single Family

Matt Caiola
Luxury Real Estate Advisor
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About This Home
The Well Maiden Estate is a rare architecturally significant waterfront estate where cascading waterfalls, winding streams, and Kroopa Pond converge across 3.5 private acres to create one of Connecticut's most extraordinary residential settings. Just minutes from the Connecticut shoreline, marinas, beaches, and fine dining, and ideally positioned between New York City and Boston, this private luxury retreat offers a rare opportunity to own a legacy estate equally suited for year-round living or a distinguished second-home escape. Originally a historic fishing shack, the restored wing blends seamlessly with a striking architectural residence designed to embrace its natural surroundings. Soaring vaulted and barreled wood ceilings, walls of glass, rich hardwood and slate floors, and 2 grand living rooms with magnificent fieldstone fireplaces create warm, sophisticated spaces with captivating water views. Chef's kitchen with Garland 6-burner range, double ovens, flat-top grill, Sub-Zero refrigerator, farmhouse sink, pantry, and abundant cabinetry. Four bedrooms include a private upper-level primary suite with exposed beams, waterfront balcony, dressing room, walk-in closet, clawfoot soaking tub, and spa-inspired bath. Heated gunite saltwater pool and spa with waterfall, rare private clay tennis court, bluestone terraces, Viking grilling station, and outdoor shower complete this exceptional estate where architecture, nature, privacy, and luxury exist in perfect harmony.
Key Facts
- City/Town
- Killingworth
- Neighborhood
- N/A
- Property / Style
- Single Family · Colonial,Tudor
- Year Built
- 1988
- Days on Market
- 63 days
- Beds
- 4
- Baths
- 2 full · 1 half
- Living Area
- 3,700 sq ft
- Lot Size
- 3.50 acres
- Garage / Parking
- 1 garage
- Property Taxes
- $18,831 / Annually
Market Snapshot
The Killingworth Market
Single Family · trailing 12 months
Active Listings
13
8 under contract
Median List Price
$825,000
13 active listings
Median Closed Price
$650,000
67 sales
Median Days on Market
47
13 active listings
Median $ / Sq Ft
$311
13 active listings
Sale-to-List Ratio
100.0%
67 sales
How this home compares
List Price
$2.35M
vs $825,000 median
2.8× the median
Price / Sq Ft
$635
vs $311 median
2.0× the median
Days on Market
63 days
vs 47 days median
16 days longer than median
Based on 13 active and 67 closed sales (trailing 12 mo) of single family in Killingworth. Source: SmartMLS · As of August 14, 2026.
Location
18 Birch Mill Road, Killingworth, Connecticut
Estimate Your Payment
Estimated Monthly Payment
Rates: Freddie Mac PMMS via FRED · Updated Aug 13, 2026per month
- Principal & Interest$12,094
- Property Taxes$1,569
- Insurance$783
- HOA$0
Estimates only. Actual rates, taxes, insurance, and HOA fees vary. Consult a lender for current rates.
Location
- City/Town
- Killingworth
- Neighborhood
- N/A
- County
- Middlesex
Residence
- Property Type
- Single Family
- Style
- Colonial,Tudor
- Year Built
- 1988
- New Construction
- No/Resale
- Living Area
- 3,700 sq ft
Schools
- Elementary
- Killingworth
- High
- Haddam-Killingworth
Interior
- Heating
- Hot Air
- Heat Fuel
- Oil
- Cooling
- Central Air
- Fireplaces
- 2
- Laundry Location
- First Floor
- Appliances
- Gas CooktopWall OvenRefrigeratorDishwasherWasherDryer
- Basement
- FullFull With Walk-Out
- Interior Features
- Central VacuumOpen Floor Plan
Exterior & Lot
- Lot Size
- 3.50 acres
- Zoning
- R-2
- Garage / Parking
- 1 garage spaceDetached Garage
- Waterfront
- Direct waterfront
- Waterfront Details
- PondViewAccess
- Water Source
- Private Well
- Sewer
- Septic
- Flood Zone
- Yes
- Pool
- GuniteIn Ground Pool
- Construction
- Clapboard
- Color
- Tan
- Roof
- Shake
- Foundation
- ConcreteStone
- Exterior Features
- BalconyTennis CourtDeckGarden AreaHot TubStone WallFrench Doors
- Lot Description
- Professionally LandscapedRollingWater View
Listing & Financials
- Property Taxes
- $18,831 / Annually
- Days on Market
- 63
- MLS #
- 24183296
- MLS Status
- Active
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This information is believed to be accurate, but without warranty.
The IDX display contains information sourced from SmartMLS, Inc. as of 8/14/2026. 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 8/14/2026 at 5:02 AM UTC.