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451 Mansfield Avenue, 
Darien, CT 06820

$6,985,000


7

Beds


11

Baths


9,058

Sq Ft


Single Family

Active

Listed by

Naima Mazouzi, (860) 754-7651

Eagle Eye Realty Pllc, (860) 263-9102

(860) 263-9102

Last updated:

October 21, 2026, 12:05 PM

MLS#

24213571

Source:

CT

About This Home

451 Mansfield Avenue

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.

Home Facts

Single Family

11 Baths

7 Bedrooms

Built in 1999

Price Summary

6,985,000

$771 per Sq. Ft.

MLS #:

24213571

Last Updated:

October 21, 2026, 12:05 PM

Added:

8 day(s) ago


Rooms & Interior

Bedrooms

Total Bedrooms:

7

Bathrooms

Total Bathrooms:

11

Full Bathrooms:

9

Interior

Living Area:

9,058 Sq. Ft.


Structure

Structure

Architectural Style:

Colonial

Building Area:

9,058 Sq. Ft.

Year Built:

1999


Lot

Lot Size (Sq. Ft):

117,612


Finances & Disclosures

Finances

Price:

$6,985,000

Price per Sq. Ft:

$771 per Sq. Ft.

Source:CT
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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.