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Two-Family Home with Covered Porch
For Sale
$1,200,000

419 Beach Avenue, Mamaroneck, NY 10543

Legal two-family layout includes an oversized main living area, covered porch, and a bright second-floor apartment.

Days on Market25

Property Features for 419 Beach Avenue

General Information

Standard status Active
Property subtype Duplex

Building Details

Building Size 3,545 SF
Year Built 1962
Listing Agency: Stetson Real Estate
Listed By: Mary Stetson
Source: Cottiemaxwellrealestate
Added: Jul 7 Changed: Jul 30 Last Checked: Jul 30 at 11:28AM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of Stetson Real Estate

Investment Insights

Based on property information with market context.

Built in 1962, this legal two-family home offers flexible living arrangements for owner-occupants, multi-generational households, or investors. The main residence features an oversized living room that flows into a spacious eat-in kitchen, with direct access to a large covered porch for indoor-outdoor entertaining. Three bedrooms and a full hall bath complete the main level. The lower level adds additional living space with a large recreation room, a laundry area, and a second full bath.

The second-floor apartment is bright and inviting, with two bedrooms, a full bath, an eat-in kitchen, and a sun-filled living room. The property also includes an expansive level backyard.

Located on a quiet residential street in Mamaroneck’s Rye Neck area, the home is minutes from Harbor Island Park, local beaches, and waterfront recreation. Commuters can access the Mamaroneck Metro-North station with express service to Grand Central Terminal in under 40 minutes, and it’s also near Rye Neck schools.

Key Highlights

  • Legal two‑family home with main‑level three bedrooms plus a second‑floor two‑bedroom apartment
  • Oversized living room opens to eat‑in kitchen with direct access to a large covered porch
  • Lower level includes a large recreation room, laundry area, and a second full bath

Financial Insights For Multifamily LT 5

Simulate Cap Rate and NOI

NOI Build-Up
Vacancy
income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
EGI (Effective Gross Income)
gross rent minus vacancy losses — the realistic income before paying operating costs.
OpEx (Operating Expenses)
recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
NOI (Net Operating Income)
income a property generates after operating costs but before financing and taxes.

Component $ $/SF
Gross rent $105.5k $29.76
− Vacancy −$6.9k −$1.93
EGI $98.6k $27.83
− OpEx −$29.6k −$8.35
NOI $69.0k $19.48
3,545 SF · lease $29.76/SF/yr · vacancy 6.50% · expense 30.00%

Alternative Uses

Best Use
Multifamily LT 5
$986.4K
$863.1K – $1.15M (±1% cap)
NOI $69,049 @ 7.0% cap · market cap 5.75%
Second Best
Apartment 5plus
$868.6K
$760.0K – $1.01M (±1% cap)
NOI $60,803 @ 7.0% cap · market cap 5.07%
Theoretical Best
Retail
$1.07M
$937.0K – $1.25M (±1% cap)
NOI $74,957 @ 7.0% cap · market cap 6.25%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Parking Lot & Garage Computer & Electronic Repair (Bike/Boat/Book/etc) Store Tech Support Center Home Appliance Store Tattoo & Piercing Shop

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

1,862
Businesses Nearby

Demographics for 10543, NY

21,296
Population
8,141
Households
2.6
Avg Household Size
41
Median Age
57%
College-Educated
89%
High-School Grad
4.3 sq mi
ZIP Area
4,953
Density / Sq Mi
$128,418
Median Household Income
$69,176
Median Earnings
$2,030
Median Rent
$710,000
Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
Rey
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Frequently Asked Questions

What type of property is this?
Duplex - Legal two-family layout includes an oversized main living area, covered porch, and a bright second-floor apartment.
Where is this duplex located?
The property is located at 419 Beach Avenue Mamaroneck, NY.
What is the asking price?
The asking price for this property is $1,200,000.
What are key features of this property?
This property features: Legal two‑family home with main‑level three bedrooms plus a second‑floor two‑bedroom apartment; Oversized living room opens to eat‑in kitchen with direct access to a large covered porch; Lower level includes a large recreation room, laundry area, and a second full bath
More about this property
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