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Monthly Rent

$4,975

Beds

5

Baths

3

* 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. View Fees and Policies for details. Price, availability, fees, and any applicable rent special are subject to change without notice.

Note: Prices and availability subject to change without notice.

Lease Terms

Contact office for Lease Terms

Fees and Policies

The fees below are based on community-supplied data and may exclude additional fees and utilities.

  • One-Time Basics
    • Due at Move-In
      • Security Deposit - Refundable
        Charged per unit.
        $4,975
        Charged per unit.

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.

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 Stony Brook, New York in the 11790 zip code.

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Floorplan Amenities

  • Air Conditioning
  • Smoke Free

Airport

  • Long Island MacArthur

    Drive: 28 min 12.9 mi

Commuter Rail

  • Stony Brook

    Drive: 9 min 3.6 mi

  • St. James

    Drive: 10 min 3.7 mi

  • Port Jefferson

    Drive: 12 min 5.7 mi

  • Smithtown

    Drive: 14 min 6.6 mi

  • Kings Park

    Drive: 21 min 10.2 mi

Universities

Parks & Recreation

  • Sweetbriar Nature Center

    Drive: 15 min 6.8 mi

  • Lake Ronkonkoma

    Drive: 18 min 8.0 mi

  • Caleb Smith State Park Preserve

    Drive: 16 min 8.0 mi

  • Nissequogue River State Park

    Drive: 23 min 10.1 mi

  • Sunken Meadow State Park

    Drive: 24 min 12.4 mi

Shopping Centers & Malls

Schools

Data provided by GreatSchools.org 2025 © 2025. All rights reserved.

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Ratings

Walkability

NR
Not Rated

Transit

NR
Not Rated

Bikeability

NR
Not Rated

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