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15 Riverside Avenue, Mastic Beach, NY 11951

Mastic Beach
Local realty services provided by:CENTURY 21 Kafcos Realty
15 Riverside Avenue,Mastic Beach, NY 11951
$699,999
  • 4 Beds
  • 3 Baths
  • 2,364 sq. ft.
  • Single family
  • Active
Listed by: maralyn c. diggin cbr
Office: douglas elliman real estate
MLS#:1059003
Source:OneKey MLS

Price summary

  • Price:$699,999
  • Price per sq. ft.:$296.11

About this home

Breathtaking waterfront views and peaceful sunsets set the stage for this updated 4 Bedroom, 2.5 Bath Hi-Ranch on Poospatuck Creek, with direct access to the bay. The first level features updated flooring, Led lighting, summer kitchen, spacious living room, bedroom, ample storage and sliders to the deck, Cathedral ceilings and hardwood floors create a bright and open feel. This Main level offers two generously sized bedrooms, and a spacious primary with walk in closet and half bath. The remodeled kitchen features quartz countertops, while the living room with fireplace and an oversized picture window showcases the yard and water views. Sliders lead to the upper deck, the perfect place to relax, unwind and savor those spectacular sunsets. Outside the home shines while you enjoy your private dock and a place to launch kayaks and paddleboat. From Poospatuck head to the bay for a day of fishing or simply enjoying life on the water. NEW : 2025/2026 Trex decking on Upper and Lower Level,...

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Home facts

  • Year built:1988
  • Listing ID #:1059003
  • Added:10 day(s) ago
  • Updated:October 24, 2026 at 11:28 AM

Rooms and interior

  • Bedrooms:4
  • Total bathrooms:3
  • Full bathrooms:2
  • Half bathrooms:1
  • Rooms Total:8
  • Flooring:Hardwood
  • Kitchen Description:Dishwasher, Refrigerator
  • Bedroom Description:First Floor Bedroom
  • Living area:2,364 sq. ft.

Heating and cooling

  • Cooling:Central Air
  • Heating:Oil
  • Central air:Yes

Structure and exterior

  • Year built:1988
  • Building area:2,364 sq. ft.
  • Lot area:0.25 Acres
  • Architectural Style:Hi Ranch
  • Construction Materials:Vinyl Siding

Schools

  • High school:William Floyd High School
  • Middle school:William Paca Middle School
  • Elementary school:Tangier Smith Elementary School

Utilities

  • Water:Public
  • Sewer:Cesspool

Finances and disclosures

  • Price:$699,999
  • Price per sq. ft.:$296.11
  • Tax amount:$8,497 (2026)

Features and amenities

  • Appliances:Dishwasher, Refrigerator

Parking

  • Parking description:Driveway, Garage
  • Garage:Yes
  • Garage spaces:2
Copyright 2026 OneKey MLS. All rights reserved. Listings courtesy of OneKey MLS as distributed by MLS GRID <lastMLSCheckTimestamp>. OneKey MLS provides content displayed here (“provided content”) on an “as is” basis and makes no representations or warranties regarding the provided content, including, but not limited to those of non-infringement, timeliness, accuracy, or completeness. Individuals and companies using information presented are responsible for verification and validation of information they utilize and present to their customers and clients. OneKey MLS will not be liable for any damage or loss resulting from use of the provided content or the products available through Portals, IDX, VOW, and/or Syndication. Recipients of this information shall not resell, redistribute, reproduce, modify, or otherwise copy any portion thereof without the expressed written consent of OneKey MLS. LI Member Broker: Greg Kafcos

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