Construction
- Year Built: 1944
- Architectural Style: Colonial
- Construction Materials: Frame
Measurements
- Building Area Units: Square Feet
- Lot Size Acres: 0.14
- Lot Size Square Feet: 6,098
21 Innis AvenueRonkonkoma, NY 11779
For Sale
$649,900
Smart Buyer Rebate $3,748
Listed by Nicholas J. Sekela
·Oasis Realty Group LLC
·631-803-6000
Last updated January 24, 2026
·Source: OneKey #954005
Listing Facts
- TypeSingle-family
- NeighborhoodLake Ronkonkoma
- Bedrooms4
- Bathrooms3
- Days on Prevu8
- Taxes$9,964.61/year
- Size1,622 sqft
- Price per sqft$401
Amenities
- Parking
Location
Mortgage Calculator
Listing History
01/21/2026
Listed by Oasis Realty Group LLC
$649,900
Property Details for 21 Innis Avenue
Exterior
Financial
Taxes
- Parcel Number: 0200-724-00-03-00-041-000
- Tax Annual Amount: $9,964.61
- Tax Assessed Value: $2,500.00
- Tax Year: 2025
Interior
Features
- Appliances: Stainless Steel Appliance(s)
- Interior Features: First Floor Bedroom, First Floor Full Bath, Eat-in Kitchen, Quartz/Quartzite Counters
Measurements
- Living Area: 1,622
- Living Area Source: Public Records
Rooms
- Basement: Finished
- Has Basement: Yes
- Bathrooms Full: 3
- Bathrooms Total Integer: 3
- Bedrooms Total: 4
- Rooms Total: 7
Parking
Parking
- Parking Features: Driveway
Schools
Elementary School
- Elementary School: Hiawatha School
- Elementary School District: Sachem
High School
- High School: Sachem High School North
- High School District: Sachem
Middle or Junior School
- Middle Or Junior School: Samoset Middle School
- Middle Or Junior School District: Sachem
Utilities
Equipment
- Heating: Oil
- Sewer: Cesspool
- Utilities: See Remarks
- Water Source: Public
Frequently Asked Questions
How many bedrooms and bathrooms does this single-family home have?
There are 4 bedrooms and 3 bathrooms in this single-family home at 21 Innis Avenue.
What schools are nearby to 21 Innis Avenue?
Nearby schools include the Hiawatha School Elementary School, Samoset Middle School, and Sachem High School North.
What are the annual taxes for 21 Innis Avenue?
Annual taxes for this single-family home are estimated at $9,964.
How does 21 Innis Avenue compare to other single-family homes in Lake Ronkonkoma?
This single-family home is listed 0% above the average price for single-family homes in Lake Ronkonkoma and has been on the market for 25 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 1,622 sqft.
21 Innis Avenue is a 4-bedroom, 3-bath single-family home for sale in Ronkonkoma NY 11779. Listed on Prevu for 8 days at $649,900. This residence features 1,622 square feet of living space, located in Lake Ronkonkoma. The median listing price for single-family homes in this area is $599,999. Nearby schools include Hiawatha School Elementary School, Samoset Middle School, and Sachem High School North. The home offers parking. View other 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 DisclaimersRebate 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.
