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Renovated Duplex With Detached Cottage
New
For Sale
$2,249,000

77 Jefferson Avenue, Roslyn Heights, NY 11577

Residential Income, Roslyn Heights, NY

Property SizeContact for details
Lot Size0.03 Acres
Days on Market4

Property Features for 77 Jefferson Avenue

General Information

Property type Residential Multi Family
Property subtype Duplex
Bedrooms 7
Bathrooms 7
Full bathrooms 7
Rooms Bathroom 3, Bedroom 3, Bathroom 6, Bedroom 1, Bathroom 2, Bathroom 5, Bedroom 7, Bedroom 2, Bathroom 7, Bedroom 6, Bedroom 4, Bathroom 4, Basement, Bedroom 5, Bathroom 1
Parking 8
Parking features Driveway
Window features Blinds
Patio and Porch features Patio
Interior features First Floor Bedroom
Exterior features Gas Grill, Lighting
Fireplace 1
Basement Finished
Lot features Back Yard, Garden, Landscaped, Level, Sprinklers In Front, Sprinklers In Rear
Elementary school Roslyn Hts Elementary School
Middle school Roslyn Middle School
High school Roslyn High School
Elementary school district Roslyn
Middle school district Roslyn
High school district Roslyn
Directions LIE X 37 North, Right on Elm Street, Right On Jefferson Ave. The main Home located On corner of Jefferson Ave and Forest St. , The Cottage is located on Forest St.
Standard status Active
APN 2289-07-G-00-0072-0
Lot size 0.03 Acres

Taxes and HOA fees

Tax Year 2025
Tax Annual Amount 26445

Utilities

Utilities Cable Available
Heating system Baseboard, Natural Gas
Cooling system Central Air
Water source Public

Amenities

stone fireplace
chef's kitchen
professional gym
landscaped garden

Building Details

Year built 1928
Number of units 2
Flooring type Hardwood
Building materials Clapboard
Architectural style Colonial
Listing Agency: Lynx Realty Inc
Listed By: Minoo Pajounia
Added: Sep 15 Changed: Sep 16 Last Checked: Sep 18 at 12:06PM
MLS# 1050812

Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Investment Insights

Based on property information with market context.

This duplex property pairs a fully renovated 5-bedroom Colonial home with a separate detached 2-bedroom cottage. The main residence includes a first-floor bedroom, open-concept living space, stone fireplace, updated kitchen, hardwood flooring, central air, natural-gas baseboard heating, and a finished basement configured as a professional gym. The home also provides attic storage and access to a landscaped garden.

The cottage has its own living area, kitchen with skylight, 1.5 bathrooms, and private garden setting. The property includes a driveway, patio, gas grill, exterior lighting, public water, and cable availability. Built in 1928, the clapboard property is located at 77 Jefferson Avenue in Roslyn Heights, NY, within Nassau County. The two-residence layout supports separate household use while retaining the physical separation of the cottage and main home.

Key Highlights

  • Fully renovated 5‑bedroom main residence
  • Detached 2‑bedroom cottage with 1.5 bathrooms
  • Finished basement with professional gym

Property Analytics

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Current Use

Diamond Chimney/DryerVent Cleaning ... General Contractor

Suggested Use

Top Pick Real Estate Agency (Bike/Boat/Book/etc) Store Garden Center Plumbing Service Florist Storage Facility

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

1,136
Businesses Nearby

Demographics for 11577, NY

12,695
Population
4,453
Households
2.9
Avg Household Size
44
Median Age
68%
College-Educated
96%
High-School Grad
3.0 sq mi
ZIP Area
4,232
Density / Sq Mi
$183,233
Median Household Income
$91,292
Median Earnings
$2,037
Median Rent
$945,000
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in Northeast region

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

What type of property is this?
Duplex - Two independent residences provide flexible living arrangements with a finished basement, landscaped outdoor areas, and separate cottage amenities.
Where is this duplex located?
The property is located at 77 Jefferson Avenue Roslyn Heights, NY.
What is the asking price?
The asking price for this property is $2,249,000.
What are key features of this property?
This property features: Fully renovated 5‑bedroom main residence; Detached 2‑bedroom cottage with 1.5 bathrooms; Finished basement with professional gym
More about this property
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