- 5BR, 3BA Home
- $5,450 Pricing
- 1,788 Square Feet
- 08-15-2026 Availability
Unit Rent and Fees
Unit Price
- $5,450
Deposit
- $5,450 deposit
About 21 Walnut Ave
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 located in the Neighborhood and 11790 Zip code of Stony Brook, NY.
Property Contact Info
- Listed by:
- Agency:
- Vendor Logo:
- Website:
- View Property Website
- Call Us:
- (516) 603-6662
- Disclaimer:
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.
Required Fees
One-Time Basics
- Due at Move-In
- Security Deposit - RefundableiCharged Per Unit.$5450
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.
Features and Amenities
On-Site Services
- Garden Style
Interior Features
- Air Conditioning
- Smoke Free
Map
- Shopping
- Colleges
- Grocery
- Medical
- Transportation
Map
Frequently Asked Questions about 21 Walnut Ave
What type of rental is available at 21 Walnut Ave?
There is currently a 5 Bed 3 Bath Home for rent with 1,788 sq ft listed at 21 Walnut Ave. It is Available August 15, 2026.
How much is the rent at 21 Walnut Ave?
The rental at 21 Walnut Ave is currently listed at $5,450.
What area of town is 21 Walnut Ave located in?
Located in the Neighborhood, 21 Walnut Ave is in the 11790 Zip Code of Stony Brook, NY.
Nearby Schools
Paul J Gelinas Junior High School
Ward Melville Senior High School
About GreatSchools Data on ApartmentHomeLiving.com.
Points of Interest
Time and distance from 21 Walnut Ave.
Big Box and Retail
Target
Lowe's
Walmart
Colleges and Universities
SUNY Suffolk County Community College - Ammerman Campus
SUNY Suffolk County Community College - Michael J. Grant Campus
Groceries
Trader Joe's
Shoprite
Trader Joe’s
Hospitals
John T. Mather Memorial Hospital Of Port Jefferson
Shopping Centers
21 Walnut Ave has 5 shopping centers within 2.1 miles.
Transit Stations
Stony Brook Station-Port Jefferson Branch
St James Station-Port Jefferson Branch
Smithtown Station-Port Jefferson Branch
Nearby Neighborhoods
Rental Price Ranges in the Area
| Bedroom | Average Rent | Cheapest Rent | Highest Rent |
|---|---|---|---|
| Stony Brook Studio Apartments | $2,286 | $2,135 | $2,406 |
| Stony Brook 1 Bedroom Apartments | $2,868 | $1,639 | $5,881 |
| Stony Brook 2 Bedroom Apartments | $3,748 | $1,966 | $7,587 |
| Stony Brook 3 Bedroom Apartments | $4,164 | $3,200 | $5,109 |
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