21 Cornelison Ave

South Nyack NY 10960

3023 sq. ft.

12632 sq. ft.

Duplex

Last sold for $999,000

Avraham Weinberger, last sold this property on 21 November 2025 after 140 days on market.

Overview

Welcome to 21 Cornelison Avenue – A Rare, Expansive Income-Producing Gem in the Heart of Nyack Step into what feels like your own private estate—this striking colonial-style triplex sits on a beautifully landscaped 0.29-acre lot with wraparound porch charm, timeless stucco exterior, and over 3,000 sq ft of living space. With two large units (2-bedroom + 5-bedroom) across three spacious levels, this home is ideal for live-in landlords, multi-generational setups, or savvy investors looking for strong rental potential in one of Rockland’s most desirable villages. Inside, you'll find bright, oversized rooms, hardwood floors, and a flexible layout that includes multiple living and dining spaces, a windowed eat-in kitchen, and plentiful storage throughout. The second and third floors function like a private duplex with 5 bedrooms, a walk-in closet, and beautifully proportioned entertaining space. The main floor includes a separate 2-bedroom apartment with its own entrance—perfect for extended family or steady rental income. This property offers incredible flexibility with room to customize or expand, and is within walking distance to downtown Nyack’s shops, restaurants, parks, and riverfront—making it as attractive to tenants as it is to owners. Whether you’re looking to offset your mortgage, generate long-term cash flow, or own a piece of Nyack charm, 21 Cornelison Avenue is an exceptional investment opportunity that checks all the boxes.

Features

7 bedrooms

2 bathrooms

3023 sq. ft. floor area

12632 sq. ft. lot size

Duplex

Estimated Value

We need at least 3 similar 7 bedroom duplexes sold in South Nyack over the last 12 months.

Property history for 21 Cornelison Ave

2025

Sold

$999,000

21 Nov 2025 by Avraham Weinberger, of Keller Williams Valley Realty

2023

Sold

$750,000

09 Aug 2023 by Kathleen Kennedy, of Imagine Properties NY

2023

Rented

Undisclosed

09 Aug 2023 by Imagine Properties NY

Happy sellers in South Nyack

We have insufficient information to provide an overview of customer satisfaction for South Nyack. Viewing the agent profiles, reviews and sales for South Nyack can provide insights for this location.