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New York>Suffolk County>Commack

21 Purdy AvenueEast Northport, NY 11731

For Sale

$799,000

Smart Buyer Rebate $7,475

Bring your design ideas and personal touch to this spacious, expanded Cape Cod home located in the highly desirable East Northport community featuring Commack School District renowned for its academic excellence and National Blue Ribbon recognition. Set on a lovely property with plenty of space for outdoor entertaining, gardening, or future expansion. In-ground sprinkler system; Shed. This home is being sold as-is and is packed with potential. Full Unfinished Basement: A massive blank canvas with high ceilings, offering immense potential for a recreation room, home gym, workshop, abundant storage. Separate HWH and Furnace. True Taxes are $17,849-
Bring your vision and turn this diamond in the rough into your dream home. Perfect for contractors or handy buyers to renovate, customize and build immediate equity.
All information but not limited to taxes, lot size, age of property are not guaranteed and must be independently verified by buyers. No offers are considered accepted until contracts a fully executed.
verified by buyers.
The information has been provided by the Seller and has not been verified by the Broker. Information is deemed reliable but not guaranteed.

Listed by Frances R. Povolny

·

Madison Real Estate Svcs LLC

·

631-865-2800

Last updated August 30, 2026

·

Source: OneKey #1036007

Listing Facts

  • TypeSingle-family
  • NeighborhoodCommack
  • Bedrooms4
  • Bathrooms2
  • Days on Prevu26
  • Taxes$17,849/year
  • Size2,478 sqft
  • Price per sqft$322

Amenities

  • Dishwasher
  • Parking

Location

Mortgage Calculator

Listing History

08/20/2026
Listed by Madison Real Estate Svcs LLC
$799,000
  1. 08/20/2026$799,000
    Listed by Madison Real Estate Svcs LLC

Property Details for 21 Purdy Avenue

Exterior

Construction

  • Year Built: 1961
  • Architectural Style: Exp Cape
  • Construction Materials: Vinyl Siding

Features

  • Fencing: Back Yard, Chain Link

Measurements

  • Building Area Units: Square Feet
  • Lot Size Acres: 0.46
  • Lot Size Square Feet: 20,038

Financial

Taxes

  • Parcel Number: 0400-184-00-01-00-046-000
  • Tax Annual Amount: $17,849.00
  • Tax Assessed Value: $3,550.00
  • Tax Year: 2026

Interior

Features

  • Appliances: Dishwasher, Range, Refrigerator
  • Flooring: Combination, Hardwood
  • Interior Features: First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Formal Dining, Open Floorplan

Measurements

  • Living Area: 2,478
  • Living Area Source: Public Records

Rooms

  • Basement: Unfinished
  • Has Basement: Yes
  • Bathrooms Full: 2
  • Bathrooms Total Integer: 2
  • Bedrooms Total: 4
  • Rooms Total: 7

Parking

Parking

  • Garage Spaces: 1
  • Garage: Yes
  • Parking Features: Driveway

Schools

Elementary School

  • Elementary School: Burr Intermediate School
  • Elementary School District: Commack

High School

  • High School: Commack High School
  • High School District: Commack

Middle or Junior School

  • Middle Or Junior School: Commack Middle School
  • Middle Or Junior School District: Commack

Utilities

Equipment

  • Heating: Natural Gas
  • Laundry Features: In Basement
  • Sewer: Cesspool
  • Utilities: Natural Gas Connected
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 4 bedrooms and 2 bathrooms in this single-family home at 21 Purdy Avenue.

What schools are nearby to 21 Purdy Avenue?

Nearby schools include the Burr Intermediate School Elementary School, Commack Middle School, and Commack High School.

Does this single-family home have parking?

Yes, there is 1 parking space available for 21 Purdy Avenue.

What are the annual taxes for 21 Purdy Avenue?

Annual taxes for this single-family home are estimated at $17,849.

How does 21 Purdy Avenue compare to other single-family homes in Commack?

This single-family home is listed 16% below the average price for single-family homes in Commack and has been on the market for 2 more days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 2,478 sqft.

21 Purdy Avenue is a 4-bedroom, 2-bath single-family home for sale in East Northport NY 11731. Listed on Prevu for 26 days at $799,000. This property features 2,478 square feet of living space, located in Commack. The median listing price for single-family homes in this area is $862,500. Nearby schools include Burr Intermediate School Elementary School, Commack Middle School, and Commack High School. The home offers dishwasher and parking. Browse more single-family home listings in Suffolk County.

The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey™ MLS. 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. Information Copyright 2026, OneKey™ MLS. All Rights Reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.