About This Home

This 4-bedroom, 3-bathroom single family at 15 Riverside Avenue in Mastic Beach, NY is listed for $699,999 ($296 per sqft). Built in 1988, the home offers 2,364 sqft of living space on a 0.25 acres lot.

Key Features

  • Built in 1988
  • 0.25 acre lot
  • Waterfront

Property Details

2 full, 1 half
2-car garage
1988

Amenities

WaterfrontHardwoodA/C
Listing Description

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, New Oil tank, New Gutters And Gutter guards

Monthly Cost Estimate

$3,744/mo

20% down · 6.5% · 30 years

Principal$506
Interest$3,033
Insurance$204

Estimates only. Actual payments may vary.

Location

15 Riverside Avenue

Mastic Beach, NY 11951

Features & Amenities

Interior Features

First Floor BedroomFirst Floor Full Bath

Property Details

Flooring

CombinationHardwood

Construction

Vinyl Siding

Parking

GarageDriveway

Heating

Oil

Cooling

Central Air

Appliances

DishwasherRefrigerator

Questions & Answers

This 4-bedroom, 3-bathroom single family at 15 Riverside Avenue is listed at $699,999 ($296/sqft). The estimated monthly payment is $3,744 based on 20% down, a 30-year loan at 6.5% interest, estimated insurance.

Key features include: Built in 1988, 0.25 acre lot, Waterfront. Interior Features: First Floor Bedroom, First Floor Full Bath.

This property is listed by Maralyn C. Diggin CBR.

MC

Maralyn C. Diggin CBR

Agent at Douglas Elliman Real Estate

Listed by Douglas Elliman Real Estate · Broker phone: 5166812600 · View on Broker Site · Broker website

MLS# 1059003· Source: OneKey MLS· 18 days on PropertySimple

Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

15 Riverside Avenue, Mastic Beach, NY 11951

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