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$4,975

  • For Rent
  • Active
  • Single Family
  • 5 Beds
  • 3 Full Baths
  • Pets Allowed (Yes)
See This Home
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See This Home
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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.

Full Property Details for 21 Walnut Ave

General

  • Rent: $4,975
  • Status: Active
  • Type: Single Family
  • Source: Long_Island
  • MLS ID: 1025436
  • Updated: 8/2/2026
  • Added to Site: 51 day(s) ago

Interior

  • Number of Rooms: 8
  • Interior Features: Eat-in Kitchen, Entrance Foyer, Formal Dining, Master Downstairs
  • Appliances: Dishwasher, Microwave, Refrigerator, Washer, Indirect Water Heater

Rooms

Bathrooms

  • Total Bathrooms: 3
  • Full Bathrooms: 3

Bedrooms

  • Total Bedrooms: 5

Parking

  • Parking Features: Driveway, Private

Location

  • County: Suffolk County

School Information

  • High School District: Three Village
  • Elementary School: Minnesauke Elementary School
  • Middle School: Paul J Gelinas Junior High School
  • High School: Ward Melville Senior High School

Community

  • Pets Allowed: Yes
  • Pet Restrictions: Call

Heating & Cooling

  • Central air: Yes
  • Cooling Type: Central Air, Ductless
  • Heating Type: Baseboard, Oil

Utilities

  • Sewer: Cesspool
  • Water: Other
  • Utility Description: Electricity Available

Structural Information

  • Architectural Style: Cape Cod
  • Detached/Attached: Detached
  • Construction: Frame
  • Basement: Yes
  • Basement Desc.: Storage Space
  • Entry Floor Number: 1
  • Sq. Ft. Source: Other
  • Year Built: 1975

Lot Features

  • Lot Size (Acres): 0.11
  • Lot Size (Sq. Ft.): 4,792

Financial Considerations

  • Security Deposit: $4,975

Disclosures and Reports

  • Special Conditions: None
  • Property ID: 0200-198-00-01-00-006-000

Listed by EMLAK Realty LLC

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Listing agents

— 21 Walnut Ave —

  • EMLAK Realty LLC

  • EMLAK Realty LLC

Schools serving 21 Walnut Ave

School District:Three Village Central School District
NameGradesDistance
Minnesauke Elementary School
21 Highgate Dr, Setauket- East Setauket, NY 11733
K-61.6 mi
Paul J Gelinas Junior High School
25 Mud Rd, Setauket- East Setauket, NY 11733
7-91.4 mi
Ward Melville Senior High School
380 Old Town Rd, Setauket- East Setauket, NY 11733
9-123.2 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price History for 21 Walnut Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
8/02/2026
Price Reduced
$4,975
-8.72%
MLS
7/15/2026
Price Increased
$5,450
25.29%
MLS
7/14/2026
Listed
$4,350
—
MLS
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Listed by EMLAK Realty LLC

21 Walnut Avenue, Stony Brook, NY 11790 (MLS# 1025436) is a Single Family property with 5 bedrooms and 3 full bathrooms. 21 Walnut Avenue is currently listed for rent at $4,975 and was received on July 14, 2026. Want to learn more about 21 Walnut Avenue? Do you have questions about finding other real estate for sale or rent in Stony Brook? You can browse all Stony Brook rentals or contact a Coldwell Banker agent to request more information.

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