25 William Street, Central Islip, NY, 11722
About This Home
Welcome to 25 William St, Central Islip an oversized property offering comfort, versatility and endless possibilities. This well maintained residence features 4 generously sized bedrooms and 3 full bathrooms, providing plenty of space for today's lifestyle. Step inside and discover a bright, welcoming layout designed for comfortable everyday living and entertaining. The full basement offers excellent potential for recreation, storage or future customization to suit your needs. Additional highlights include oil heating, oil fuel and three cesspools adding functionality to the property. The partially fenced yard provides the perfect outdoor space to relax, garden or entertain family and friends. Conveniently located near schools, shopping, restaurants, parks and public transportation, this home offers easy access to all the amenities Central Islip has to offer. With its spacious layout, great potential and convenient location, this is an outstanding opportunity to make 25 William St your next home. Come see all the possibilities this wonderful property has to offer!
Getting Around
Car-Dependent
Very Limited Transit
Somewhat BikeableSchools
Construction
Condition
- Year built: 1870
Materials
- Construction materials: Frame
Type & Style
- Home type: SingleFamily
- Architectural style: Colonial
- Property subType: Single Family Residence,Residential
Interior
Appliances
- Appliances included: Range,Refrigerator
Basement
- Level: Basement
Basement
- Has basement: Yes
- Basement: Finished,Full
Bedrooms & Bathrooms
- Bedrooms: 4
- Bathrooms: 3
- Full bathrooms: 3
Features
- Galley Type Kitchen,Other
- Flooring: Laminate
- Attic: Unfinished
Heating & Cooling
- Heating features: Oil,Other
- Cooling features: None
Interior Area
- Total structure area: 1,586
- Total interior livable area: 1,460 sqft
Other
- Level: First
Other
- Level: Second
Property
Details
- Parcel number: 0500099000200022002
- Special condition: None
Features
- Fencing: Partial
Lot
- Lot size: 0.35 Acres
- Features: Near Public Transit,Near School,Near Shops
Parking
- Parking features: Driveway,Off Street,On Street,Private
- Has uncovered spaces: Yes
Climate Risk is Financial Risk
Every home has a financial story beyond the listing price. Below, you’ll see the climate risks that could affect this property — and in Bills & Affordability, how those risks may influence repairs, insurance, utilities, and long-term value.
Biggest Threats for This Home
- Cold Wave
- Winter Weather
- Tsunami
How This Home’s Risks Compare
FEMA Declared Disasters in Suffolk County and New York
Understanding the Costs
Financial advisors generally recommend spending no more than 30% of your gross household income on housing costs. In practice, many households stretch to 35% or beyond — especially in high-cost markets.
Estimated Costs Today
| Monthly | Annual | |
|---|---|---|
| Mortgage | $3,413 | $40,956 |
| Home Insurance * | $241 | $2,892 |
| Property Taxes | $911 | $10,932 |
| Electricity | $246 | $2,954 |
| Total | $4,811 | $57,732 |
Income You'd Need if You Spent...
New York FAIR Plan Programs
How Costs Could Change Over Time
Climate risk is quickly impacting all of the major home ownership costs. Adjust the growth rates and percentage of income spent on housing below to see how your housing costs could change over the next 10 years — and what income you'd need to keep up.
Comparing Against the Market
Price Per Sq Ft
vs Other Active Listings
Avg $/sqft
vs Homes Sold Last Month
Median $/sqft
Current Market Trends
Median Price Per Square Foot
The median price per square foot of homes sold in this area each month. Compare this to this listing's price per square foot to gauge whether the home is priced in line with recent sales.
Historicals for This Listing
Zestimate History ($/sqft)
Price History
| Date | Event | Price |
|---|---|---|
| 2026-07-24 | Listed for sale | $675,000 |
| 2026-02-17 | Listing removed | $659,000 |
| 2026-02-06 | Listed for sale | $659,000 |
| 2006-06-05 | Sold | $288,650 |
| 1998-08-20 | Sold | $2,500 |
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