#R1609323, Robert Kennedy, Listing office: Coldwell Banker Timberland Properties
Property details
About 21 Cornelison Ave
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.
Highlights
Home typeTriplex
HeatingBaseboard
StatusActive
Lot size0.29 Acres
Year built1940
MLS #884718
Summary
- Full Bathrooms: 2
- Basement: No
- Flooring Type: Hardwood, Tile
- Interior: First Floor Bedroom, First Floor Full Bath, Eat-in Kitchen, Pantry, Storage
- Total Bedroom Count: 7
- Architectural Style: Colonial
- Heating: Baseboard
- Cooling: None
- List Price: $999,000
- Annual Tax Amount: $18,123
- Tax Year: 2019
- Year Built: 1940
- Lot Size: 0.29 Acres
- MLS Number: 884718
- MLS Name: ONEKEY2
- Office Name: Keller Williams Valley Realty
- Office Phone: (201) 391-2500
Listings courtesy of OneKey MLS as distributed by MLS GRID.
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Last updated on: 7/30/2025, 10:41:30 AM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.
Price information
Property sales
| Date | Event | Price |
|---|---|---|
| Aug 24, 2023 | Home Sold | $750,000 |
Tax history
| Year | Assessment | Property Tax |
|---|---|---|
| 2023 | $267,700 | $- |
| 2022 | $267,700 | $- |
| 2021 | $267,700 | $- |
| 2020 | $267,700 | $- |
| 2019 | $267,700 | $18,123 |
| 2017 | $267,700 | $35,238 |
History based on county public records data.
Nearby schools
7
Upper Nyack School
Public District KG-6
1.7 mi
•336 N Broadway
5
Cottage Lane Elementary School
Public District 3-5
2.0 mi
•120 Cottage Ln
6
West Nyack Elementary School
Public District KG-5
2.7 mi
•661 W Nyack Rd
School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.
Neighborhood
The neighbors living near this home have an average income of $132,783. Residents of Nyack, NY typically earn between $100k-200k each year. The majority of families are single, no kids. Most residents in this area have post secondary degree education.
How much money do the neighbors make?
11%
<35k
25%
35k-100k
33%
100k-200k
31%
200k+
What level of education do the neighbors have?
High School Diploma
Post Secondary Degree
Masters Degree
Doctorate
What types of families live nearby?
52%
Single, No Kids
5%
Single, with Kids
24%
Married, No Kids
19%
Married, with Kids
Are the neighbors home owners or renters?
Home Owners
Renters
How old are people in this area?
13%
<11 yrs old
6%
12-17 yrs old
17%
18-34 yrs old
45%
35-64 yrs old
19%
65+ yrs old
What do the neighbors do for fun?
Skiing/snowboarding
Men's Tennis
PGA/LPGA
Where do the neighbors shop?
Nordstrom
Bloomingdales
Chico's
Where do the neighbors go to eat?
California Pizza Kitchen
Bonefish Grill
Starbucks
What do the neighbors drive?
BMW
Lexus
Cadillac
What do the neighbors listen to?
Talk/Personality
News
Classical
All data provided by Home Junction and Claritas
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Frequently asked questions
About 21 Cornelison Ave
The listing price of 21 Cornelison Ave property is $999,000.
The property 21 Cornelison Ave is a multi located in Nyack, New York, 10960.
Active Listing: 21 Cornelison Ave is For Sale (Active/New) which means the seller is accepting offers.
The nearby schools for 21 Cornelison Ave are: Upper Nyack School (GreatSchools Rating 7/10), Cottage Lane Elementary School (GreatSchools Rating 5/10), West Nyack Elementary School (GreatSchools Rating 6/10), Nyack Middle School (GreatSchools Rating 5/10), South Orangetown Middle School (GreatSchools Rating 6/10), Sleepy Hollow Middle School (GreatSchools Rating 4/10), Nyack Senior High School (GreatSchools Rating 7/10), Tappan Zee High School (GreatSchools Rating 9/10), Sleepy Hollow High School (GreatSchools Rating 7/10).
According to the records, the last property tax for 2019 is $18,123 (source: MLS/based on county public records data).
The last sale was on August 24, 2023 for $750,000 (source: MLS/tax record).
The year of construction for 21 Cornelison Ave is 1940.
This home is located at 21 Cornelison Ave in Nyack, NY and zip code 10960. Features: 7 bedrooms, 2 bathrooms. It has been listed on Rocket Homes since July 3, 2025 and is currently priced at $999,000.
In June 2025, from all listings sold in Nyack, NY there were more than 6 sold above asking price, over 4 sold below and more than 2 were sold right at the asked price. The number of homes for sale in Nyack, NY increased by 4.5% between May and June 2025. In June 2025 median list price was $675,000 and the average listing age was 38 days.
From Rocket Homes Real Estate and based on county public records data.