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$9,875,000

For Sale - Active
339 Duck Pond Rd, Locust Valley, NY 11560
10 Beds
12 Baths
12,000 Square Feet
6.33 Acres Lot
Built in 1926
For Sale - Active
1 Units
Checked: 1 hour ago
Updated: Jul 17, 2025 at 10:39AM

Investment Summary


Monthly Cash Flow
-$52,725
Cap Rate
-0.3%
Cash-on-Cash Return
-27.9%
Debt Coverage Ratio
-0.06
Internal Rate of Return (5 years)
-22.8%

Property Description


6.33 Acres Lot
Built in 1926
For Sale - Active
1 Units

Nestled in the prestigious village of Matinecock, this exquisite 1926 French Normandy home, originally commissioned by J.D. Lyons and designed by renowned architects Delano and Aldrich, showcases a remarkable transformation by Oliver Cope, Architect, Miles Redd, Interior Designer, and Ed Hollander, Landscape Architect. This stunning manor perfectly marries historical elegance with modern luxury. Upon entering, you are welcomed by the warmth of fine craftsmanship, featuring intimate rooms thoughtfully designed for contemporary living. A standout octagonal room addition enhances the unique character of this exceptional residence. Traditional details such as antique parquet wood floors, 12 wood-burning fireplaces with original mantles, and exquisite handmade paneling coalesce beautifully with meticulous updates throughout. The chef’s gourmet kitchen offers a dream space with Calcutta marble countertops and top-tier appliances, including Subzero refrigeration and a 6-burner Wolf range with ovens—all complemented by a spacious island and dining area. For entertaining, a large formal dining room and a charming terrace invite serene outdoor summer meals, all overlooking the inviting pool. The tranquil outdoor space is a sanctuary, complete with a heated oversized gunite saltwater pool featuring a spa and electric cover, a separate pool house with shower and laundry facilities, and a beautifully landscaped lighted tennis court. Entertain with ease in the elaborate outdoor kitchen, which boasts a Grillworks grill, pizza oven, and premium Kalamozoo cabinetry. Lush gardens are adorned with rare climbing roses, hydrangeas, and espaliered fruit trees. A trellis draped in orange trumpet vine and climbing hydrangea creates the perfect setting for al-fresco dining, alongside numerous terraces and a golf green. Additional features include an elevator, a cutting-edge Nest security system, and a 3,000-bottle temperature and humidity-controlled wine cellar. The spacious laundry room is equipped with two washers and two dryers, while the finished lower level, updated HVAC, and geothermal heating enhance comfort and efficiency. A separate garage completes this luxurious offering. This extraordinary home is truly a “must see,” embodying unparalleled luxury and tranquility, located within the award-winning Locust Valley school district. Don’t miss this rare opportunity to own a piece of Long Island history. Masterpiece Collection Listing

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Location


Property Details


Parking

  • Description: Detached, Private
  • Details: Detached, Private
  • Garage Spaces: 2
  • Spaces Total: 0

Bedroom Information

  • # of Bedrooms: 10

Bathroom Information

  • # of Baths (Full): 10
  • # of Baths (Partial): 2
  • # of Baths (Total): 12.0

Interior Features

  • # of Rooms: 16
  • # of Stories: 2
  • Attic: Yes
  • Basement: Yes
  • Basement Description: Finished, Full
  • Fireplace: Yes

Exterior Features

  • Exterior Walls Materials: Stucco
  • Pool: Yes

Land Information

  • Land Use: Residential
  • Land Use Subtype: Single Family Residential

Lot Information

  • Parcel ID: 2300K000663
  • Lot Size: 275735 sqft

Property Information

  • Property Type: Single Family Residence
  • Style: Estate
  • Year Built: 1926

Tax Information

  • Annual Tax: $116,307

Utilities

  • Water & Sewer: Public
  • Heating: Natural Gas, Geothermal
  • Cooling: Central Air

Location

  • County: Nassau

Listing Details


Listed by:
Kathryn Maxwell Pournaras CBR SFR
Daniel Gale Sothebys Intl Rlty
(516) 857-3011

Source:
OneKey MLS
MLS#: 852070
OneKey MLS

Investment Summary


Monthly Cash Flow
-$52,725
Cap Rate
-0.3%
Cash-on-Cash Return
-27.9%
Debt Coverage Ratio
-0.06
Internal Rate of Return (5 years)
-22.8%

Purchase Details

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Purchase price:
$9,875,000
Amount financed:
-$7,900,000
Down payment:
$1,975,000
Closing costs:
$296,250
Rehab costs:
$0
Initial cash invested:
$2,271,250
Square feet:
12,000
Cost per square foot:
$823
Monthly rent per square foot:
$0.83

Financing Details

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Loan amount:
$7,900,000
Loan to value ratio:
80.0%
Loan type:
Amortizing
Term:
30 years
Interest rate:
6.500%
Principal & interest:
$49,933
Property tax:
$9,692
Insurance:
$700
Private mortgage insurance (PMI):
$0
Monthly payment:
$60,325

Operating Income

Find a Property Manager

% Rent Monthly Yearly
Gross rent:
$10,000 $120,000
Vacancy loss: (6%)
6% -$600 -$7,200
Operating income:
$9,400 $112,800

Operating Expenses


% Rent Monthly Yearly
Property taxes: (97%)
97%-$9,692-$116,308
Insurance: (7%)
7%-$700-$8,400
Property management: (8%)
8%-$800-$9,600
Repairs & maintenance: (5%)
5%-$500-$6,000
Capital expenditures: (5%)
5%-$500-$6,000
HOA fees: (n/a)
n/an/an/a
Total operating expenses: (122%)
122%-$12,192-$146,308

Cash Flow


Monthly Yearly
Net operating income:
-$2,792 -$33,504
Mortgage payments:
-$49,933 -$599,196
Cash flow:
$52,725 $632,700