21 Guardian Drive
Mount Sinai, NY 11766
- 4 beds
- 3 baths
- 1,950 sqft
- ~1/2 acre lot
- $333 per sqft
- 1984 build
- – on site
Move in Ready Cape Cod With Garage Conversion that lends to potential income or additional living space. The neighborhood will make you feel right at home with the wide-line streets and neighboring homes sitting on nice size half acre manicured parcels. As you walk enter the home you are welcomed by a large living Room with vaulted ceilings w/Woodburning stove open to the the Upper loft Siting Area, As you continue you will find the sun drenched dining room open to the updated kitchen which features beautiful wood painted grey cabinetry, Stainless steel updated appliance accented with glass backsplash, The first floor full bath has been gut renovated with all new plumbing from there to kitchen, neutral subway tile floor to ceiling, vanity with marble top, & door to backyard to service dually as pool bath or easy access to let dogs out, additionally there are two nice size bedrooms also on first floor in main living area, The primary bedroom has ensuite bathroom & walk in closet w/Laundry. Central Air 2015, & Architectural roof 2007. The garage conversion offers 1 Bedroom PLUS loft, living room./kitchen, full bath and washer & dryer with side entrance and side yard space. The backyard is spacious and has two stone patios for entertaining, & Ample size shed for storage. All of the above situated on a lush .52 Acre manicured parcel. Too Much to List. Will not last.
Last checked:
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Checking…
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Last updated Apr 24, 2025
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MLS# 853189 —
Upcoming Open Houses
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Saturday, 4/26
11am-1pm
The Building
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Year Built:1984
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Basement:false
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Architectural Style:Cape Cod
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Construction Materials:Vinyl Siding
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Patio And Porch Features:Patio
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Building Area Units:Square Feet
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Building Area Total:1950
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Security Features:Security System
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Attic:Dormer,See Remarks
Interior
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Living Area:1950
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Total Rooms:9
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Interior Features:First Floor Bedroom, First Floor Full Bath, Cathedral Ceiling(s), Ceiling Fan(s), Crown Molding, High Ceilings, In-Law Floorplan, Primary Bathroom, Open Floorplan, Pantry, Recessed Lighting, Walk-In Closet(s), Washer/Dryer Hookup
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Fireplace Features:Living Room
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Fireplace:true
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Living Area Source:Other
Financial & Terms
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Lease Considered:false
The Property
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Fencing:Partial
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Lot Size Acres:0.52
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Parcel Number:0200-209-00-09-00-012-000
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Property Type:Residential
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Property Subtype:Single Family Residence
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Lot Size SqFt:22,651 Sqft
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Property Attached:false
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Lot Size Dimensions:142x170
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Waterfront:false
Listing Agent
- Contact info:
- Agent phone:
- (631) 312-7862
- Office phone:
- (631) 642-2300
Taxes
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Tax Year:2025
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Tax Source:Municipality
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Tax Annual Amount:13621.05
Beds
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Total Bedrooms:4
Baths
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Full Baths:3
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Total Baths:3
The Listing
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Special Listing Conditions:None
Heating & Cooling
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Heating:Forced Air, Heat Pump, Oil, Other, See Remarks
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Cooling:Central Air
Utilities
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Sewer:Cesspool
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Utilities:Cable Available
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Water Source:Public
Appliances
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Appliances:Dishwasher, Dryer, Gas Oven, Gas Range, Microwave, Refrigerator, Washer
Schools
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High School:Robert M Grable Jr Mount Sinai High School
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Elementary School:Mt Sinai Elementary School
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High School District:Mount Sinai
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Middle School:Mt Sinai Middle School
The Community
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Association:false
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Senior Community:false
Parking
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Garage:false
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Carport:false
Monthly cost estimate

Asking price
$649,990
Expense | Monthly cost |
---|---|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$3,480
|
Taxes | $1,135 |
Insurance | $178 |
Utilities | $377 See report |
Total | $5,170/mo.* |
*This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
Date | Event | Source | Price | % Change |
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4/24/25
Apr 24, 2025
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Listed / Active | ONEKEY | $649,990 |

48% of nearby similar homes sold for over asking price
Similar homes that sold in bidding wars went $30k above asking price on average, but some went as high as $101k over asking price.