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MLS ID KEY996770Last updated Oct 10, 2026

Single Family

100 Avenue B

Active · Islip · Suffolk County, NY 11741

Bedrooms
3 Beds
Bathrooms
1 Bath
Year built
1955
Est. monthly taxes
$694.41
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About this home

Welcome to this charming and expanded Cape Cod set on a flat, fenced .28-acre lot offering space, versatility, and tremendous potential. This 3-bedroom, 1-bath home features a thoughtful addition that dramatically enhances the living space while maintaining the warmth and character Cape Cod buyers love. The front door opens into the original living room, offering classic charm. The eat-in kitchen offers ample room for daily dining and entertaining, while the expansive addition creates an impressive second living area and formal dining space filled with natural light. This flexible layout provides multiple gathering spaces rarely found in homes of this style and size. The addition also includes an attached one-car garage with automatic opener and a private third bedroom situated above the garage. Upstairs also features an additional office area, abundant storage space, and functional layout options for today’s lifestyle needs. Additional interior highlights include hardwood floors on the main level, a basement with high ceilings, laundry area, and extensive storage capacity. Outside, enjoy both a welcoming front porch and a covered rear porch overlooking the spacious fenced backyard — perfect for entertaining, gardening, pets, or simply relaxing outdoors. Additional features include a 4-zone in-ground sprinkler system, dry well for the washing machine and dishwasher, and plenty of off-street parking. With its expanded footprint, versatile floor plan, generous property size, and desirable Cape Cod character, this home presents an outstanding opportunity for a wide range of buyers.

Listing snapshot

Days on site
59 days
Listed on MLS
May 12, 2026
Full baths
1
Half baths
0
Annual property tax (MLS)
$8,332.86
Tax year
2025
Area source (MLS)
Plans
Listing brokerage
Signature Premier Properties
MLS ID
KEY996770
Last updated
Oct 10, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1955
Garage
Yes
Garage spaces
1
Total parking
3
Parking
Attached, Driveway, Garage, Garage Door Opener
Water source
Public
Sewer
Cesspool
Utilities
None

Interior features

Basement
Partial
Heating
Baseboard, Oil
Cooling
Wall/Window Unit(s)
Interior
First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Eat-in Kitchen, Storage
Appliances
None
Flooring
Hardwood
Fireplace
No

Exterior features

Architectural style
Cape Cod
Construction materials
Frame, Vinyl Siding
Private pool
No

Schools (MLS)

Elementary school
Nokomis School
Elementary school district
Sachem
Middle school
Seneca Middle School
Middle school district
Sachem
High school
Sachem High School North
High school district
Sachem

School information is provided by the MLS. Confirm attendance eligibility with the school district.

Recent activity

  1. Listing updated from MLS
  2. MLS status changed
  3. First seen on this site

Location

Islip · Suffolk County, NY 11741Show interactive map
100 Avenue B

Islip · Suffolk County, NY 11741

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Estimate monthly payment

Loan detailsFixed-rate, fully amortizing loan. Edit the assumptions below; no market rate is supplied.
Property expenses (USD)
MLS amounts are prefilled when available and can be edited. Confirm what fees include. Unknown fee frequencies cannot be converted automatically.Property expenses: MLS values where available; missing values stay blank.

Estimated monthly principal & interest—

Monthly property taxNot provided

Monthly association / maintenance feesNot provided

Estimated monthly total of entered costs—

Excludes insurance, mortgage insurance, special assessments and lender fees. MLS taxes may reflect abatements or exemptions and can change.

Listing data is supplied by the MLS and may change without notice.