451 Mansfield Avenue, Darien, CT 06820
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451 Mansfield Avenue, Darien, CT 06820
451 Mansfield Avenue, Darien, CT 06820
451 Mansfield Avenue, Darien, CT 06820
451 Mansfield Avenue, Darien, CT 06820
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NIELS PENNINGS

NIELS PENNINGS

+1(917) 583-2567
$ 6,985,000
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451 Mansfield Avenue Darien, CT 06820

7 Beds

11 Baths

9,058 SqFt

UPDATED:

Key Details

Property Type Single Family Home

Listing Status Active

Purchase Type For Sale

Square Footage 9,058 sqft

Price per Sqft $771

MLS Listing ID 24213571

Style Colonial

Bedrooms 7

Full Baths 9

Half Baths 2

Year Built 1999

Annual Tax Amount $47,118

Lot Size 2.700 Acres

Property Description

Set back from the road on 2.7 beautifully landscaped acres, 451 Mansfield Avenue offers the privacy, grandeur, and distinctive character of a true country estate. A sweeping circular drive introduces a grand residence distinguished by its striking stone facade and timeless architectural detailing, a substantial two-story guest house, and a magnificent outdoor setting centered around a 24' x 48' infinity-edge pool. Extensive custom stonework, elegant terraces, and lush grounds enhance the property's distinctive estate-like character. Extensively renovated in 2026, the residence features all- new mechanical systems, new windows, and thoughtfully redesigned interiors. Blending timeless architectural elegance with sophisticated contemporary luxury, the home offers approximately 9,000 square feet of finished living space, including a light-filled 1,600-square-foot walk-out lower level. Inside, a graceful, curved staircase rises from the herringbone-floored foyer, introducing beautifully proportioned rooms, distinctive millwork, and refined architectural detailing. Formal living and dining rooms, each with a custom marble fireplace, provide gracious entertaining spaces, while a richly paneled library with coffered ceiling and fireplace offers a distinguished private study.

Location

State CT

County Fairfield

Zoning R2

Rooms

Basement Full, Heated, Sump Pump, Storage, Garage Access, Cooled, Partially Finished

Interior

Interior Features Sauna

Heating Hot Air

Cooling Central Air

Fireplaces Number 6

Exterior

Parking Features Attached Garage

Garage Spaces 4.0

Pool Gunite, Heated, Pool House, Infinity Edge, Salt Water, In Ground Pool

Waterfront Description Not Applicable

Roof Type Slate

Building

Lot Description Lightly Wooded, Dry, Professionally Landscaped

Foundation Concrete

Sewer Public Sewer Connected

Water Public Water Connected

Schools

Elementary Schools Per Board Of Ed

High Schools Per Board Of Ed

Listed by Naima Mazouzi • Eagle Eye Realty PLLC

Nearby Locations

NIELS PENNINGS

NIELS PENNINGS

Real Estate Advisor RES.RES.0814910

+1(917) 583-2567

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451 Mansfield Avenue