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321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
321 Union Avenue, Riverhead NY 11901
New York>Suffolk County>Riverhead

321 Union AvenueRiverhead, NY 11901

For Sale

$899,000

Smart Buyer Rebate $8,990

Welcome to this beautifully built brand new construction home featuring 7 bedrooms, 4 full bathrooms, and 1 half bath with room for everyone. Designed with comfort and functionality in mind, the home boasts soaring 10-foot finished basement ceilings, 9-foot ceilings throughout the first and second floors, and spacious open living areas perfect for entertaining. The separate outside entrance to the basement provides added flexibility for extended family or guest accommodations. Outside, enjoy a professionally designed premium landscaping package and full irrigation system. Ideally situated just a short 5-minute walk to the revitalized Main Street in Riverhead, filled with restaurants, shopping, and entertainment. Surrounded by exciting new development being built nearby by a prominent local developer, adding tremendous future value to the neighborhood.

Listed by Matthew Hart

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World Prop Intl Sea to Sky

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631-961-4626

Last updated May 19, 2026

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Source: OneKey #1001523

Listing Facts

  • TypeSingle-family
  • NeighborhoodRiverhead
  • Bedrooms7
  • Bathrooms5
  • Days on Prevu29
  • Taxes$4,934/year
  • Size2,700 sqft
  • Price per sqft$333

Amenities

  • Private Outdoor Space
  • Air Conditioning
  • Parking

Location

Mortgage Calculator

Listing History

05/18/2026
Listed by World Prop Intl Sea to Sky
$899,000

Property Details for 321 Union Avenue

Exterior

Construction

  • Year Built: 2026
  • Architectural Style: Colonial
  • Construction Materials: Frame

Features

  • Patio And Porch Features: Patio

Measurements

  • Building Area Units: Square Feet
  • Lot Features: Sprinklers In Front, Sprinklers In Rear
  • Lot Size Acres: 0.12
  • Lot Size Square Feet: 5,227

Financial

Taxes

  • Parcel Number: 0600-127-00-01-00-041-000
  • Tax Annual Amount: $4,934.00
  • Tax Assessed Value: $11,200.00
  • Tax Year: 2025

Interior

Features

  • Appliances: Stainless Steel Appliance(s)
  • Fireplace: Yes
  • Fireplaces Total: 1
  • Flooring: Wood
  • Interior Features: First Floor Full Bath

Measurements

  • Living Area: 2,700
  • Living Area Source: Other

Rooms

  • Basement: Finished
  • Has Basement: Yes
  • Bathrooms Full: 4
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 5
  • Bedrooms Total: 7
  • Rooms Total: 11

Parking

Parking

  • Parking Features: Driveway

Schools

Elementary School

  • Elementary School: Contact Agent
  • Elementary School District: Contact Agent

High School

  • High School: Riverhead Senior High School
  • High School District: Riverhead

Middle or Junior School

  • Middle Or Junior School: Riverhead Middle School
  • Middle Or Junior School District: Riverhead

Utilities

Equipment

  • Cooling: Central Air
  • Heating: Electric
  • Sewer: Public Sewer
  • Utilities: Electricity Connected
  • Water Source: Public

Frequently Asked Questions

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

There are 7 bedrooms and 5 bathrooms in this single-family home at 321 Union Avenue.

What schools are nearby to 321 Union Avenue?

Nearby schools include the Contact Agent Elementary School, Riverhead Middle School, and Riverhead Senior High School.

What are the annual taxes for 321 Union Avenue?

Annual taxes for this single-family home are estimated at $4,934.

How does 321 Union Avenue compare to other single-family homes in Riverhead?

This single-family home is listed 36% above the average price for single-family homes in Riverhead and has been on the market for 44 less 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 2,700 sqft.

321 Union Avenue is a 7-bedroom, 5-bath single-family home for sale in Riverhead NY 11901. On Prevu for 29 days at $899,000. This home features 2,700 square feet of living space, located in Riverhead. The median listing price for single-family homes in this area is $585,000. Nearby schools include Contact Agent Elementary School, Riverhead Middle School, and Riverhead Senior High School. Additional amenities include private outdoor space, air conditioning, and parking. Explore 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.