$4,975
/ Month
21 Walnut Ave
Stony Brook, NY 11790
Favorites
516-603-6662
-
Bedrooms
5
-
Bathrooms
3
-
Square Feet
1,788 sq ft
-
Available
Available Now
Highlights
- Cape Cod Architecture
- Main Floor Primary Bedroom
- Formal Dining Room
- Eat-In Kitchen
- Entrance Foyer
- Central Air
21 Walnut Ave
Favorites
About This Home
$4,975 deposit,
Available Now
Discover the perfect blend of comfort and convenience in this newly renovated 5-bedroom,3-bath apartment located in the heart of Stony Brook. Just minutes from Stony Brook University,Stony Brook Hospital,and public transportation,The modern design features fresh finishes and updated appliances,creating a welcoming and stylish living space with family room and dining room. Plus,the landlord covers landscaping,so you can enjoy a beautifully maintained yard without lifting a finger. MLS ID KEY1025436 Based on information submitted to the MLS GRID as of [see last changed date above]. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Prices displayed on all Sold listings are the Last Known Listing Price and may not be the actual selling price.
21 Walnut Ave is a house located in Suffolk County and the 11790 ZIP Code. This area is served by the Three Village Central School District attendance zone.
* Price shown is base rent. Excludes user-selected optional fees and variable or usage-based fees and required charges due at or prior to move-in or at move-out. Price, availability, fees, and any applicable rent special are subject to change without notice.
* Square footage definitions vary. Displayed square footage is approximate.
Home Details
Home Type
Single Family Detached Home
Year Built
Built in 1975
Basement
Basement Storage
Bedrooms and Bathrooms
Primary Bedroom on Main
3 Full Bathrooms
5 Bedrooms
Home Design
Cape Cod Architecture
Frame Construction
Entry on the 1st floor
Interior Spaces
Formal Dining Room
Entrance Foyer
1,788 Sq Ft Home
Kitchen
Eat-In Kitchen
Microwave
Dishwasher
Laundry
Washer
Listing and Financial Details
12-Month Minimum Lease Term
Assessor Parcel Number 0200-198-00-01-00-006-000
Lot Details
4,792 Sq Ft Lot
Parking
Private Parking
Driveway
Schools
Minnesauke Elementary School
Paul J Gelinas Junior High School
Ward Melville Senior High School
Utilities
Central Air
Baseboard Heating
Water Heater
Ductless Heating Or Cooling System
Heating System Uses Oil
Cesspool
Community Details
Pet Policy
Call for details about the types of pets allowed
Fees and Policies
The fees listed below are community-provided and may exclude utilities or add-ons. All payments are made directly to the property and are non-refundable unless otherwise specified. Use the Cost Calculator to determine costs based on your needs.
-
One-Time Basics
-
Due at Move-In
-
Security Deposit - RefundableCharged per unit.$4,975
-
-
Due at Move-In
Property Fee Disclaimer: Based on community-supplied data and independent market research. Subject to change without notice. May exclude fees for mandatory or optional services and usage-based utilities.
Contact
- Listed by Haluk J. Yavas | EMLAK Realty LLC
- Phone Number
- Contact
-
Source
OneKey® MLS
Information Copyright 2026, OneKey® MLS. All Rights Reserved.
The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use.
The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey® MLS.
Location
Get Directions
Situated on Long Island’s North Shore, Stony Brook is a scenic community brimming with dynamic appeal. Stony Brook’s charming harbor rests along the Smithtown Bay, offering sweeping waterfront vistas and ample opportunities for outdoor recreation. Among Stony Brook’s many additional outdoor destinations are Avalon Park and Preserve, West Meadow Wetlands Reserve, and Sand Street Beach.
Stony Brook is also home to Stony Brook University, which provides the community with plenty of cultural and educational opportunities. However, Stony Brook is more than just a college town. Residents love the community’s historic character, exceptional schools, and waterfront access along with its overall tranquil atmosphere. Stony Brook is also convenient to excellent shopping at Smith Haven Mall.
Learn more about living in Stony Brook
Amenities
- Air Conditioning
- Smoke Free
Education
| Colleges & Universities | Distance | ||
|---|---|---|---|
| Colleges & Universities | Distance | ||
| Drive: | 7 min | 3.0 mi | |
| Drive: | 17 min | 9.2 mi | |
| Drive: | 27 min | 13.4 mi | |
| Drive: | 27 min | 13.7 mi |
21 Walnut Ave is within 7 minutes or 3.0 miles from Stony Brook University. It is also near SUNY Suffolk Co., Ammerman and Touro University.
Schools
Public Elementary School
Grades PK-5
644 Students
Attendance Zone
Public Middle School
Grades 6-8
651 Students
Attendance Zone
Public High School
Grades 9-12
1,443 Students
Attendance Zone
Private Elementary, Middle & High School
Grades PK-12
Nearby
Private Middle & High School
Grades 6-12
442 Students
Nearby
School data provided by
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology
Data provided by GreatSchools.org © 2026. All rights reserved.
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology
Data provided by GreatSchools.org © 2026. All rights reserved.
Getting Around
What do Walkability, Transit, Drivability, and Bikeability mean?
Walkability measures the walking distance to day-to-day needs.
Transit measures access to public transportation.
Drivability measures congestion, parking availability, and access to major roads.
Bikeability measures the suitability for cycling.
How It Works
Fairly Walkable
Walkability
40
/ 100
Some Public Transit
Transit
50
/ 100
Moderately Drivable
Drivability
70
/ 100
Moderately Bikeable
Bikeability
60
/ 100
Scores provided by
What do Walkability, Transit, Drivability, and Bikeability mean?
Walkability measures the walking distance to day-to-day needs.
Transit measures access to public transportation.
Drivability measures congestion, parking availability, and access to major roads.
Bikeability measures the suitability for cycling.
How It Works
Active
Soundscore™
73
/ 100
Traffic
BusyAirport
CalmBusinesses
CalmScores provided by
HowLoud What is a Sound Score Rating? A Sound Score Rating aggregates noise caused by vehicle traffic, airplane traffic and local sources. How It WorksYou May Also Like
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21 Walnut Ave
Stony Brook, NY 11790