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MLS ID KEY1055112Last updated Sep 29, 2026

Single Family

471 Southport Street

Active · Islip · Suffolk County, NY 11779

Bedrooms
5 Beds
Bathrooms
3 Baths
Year built
2005
Est. monthly taxes
$1,678.92
Property gallery0 / 38
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About this home

Owner-built in 2005 and being offered for its first sale since construction, this oversized 0.63-acre Ronkonkoma property delivers rare scale, volume, and versatility. 471 Southport Street features 10-foot ceilings, abundant natural light, central HVAC, and quality construction details including 6-inch walls. The layout supports today’s need for space, privacy, dedicated work areas, and room to spread out. The main and second levels offer 5 bedrooms and 3 full baths, with expansive living and dining areas designed for daily comfort and entertaining. The spacious kitchen features a center island, breakfast area, granite counters, stainless steel appliances, and access to the deck and deep backyard with room for outdoor enjoyment, recreation, or future improvements. Upstairs, the oversized 25' 3" x 25' 0" bonus room provides exceptional flexibility as a family room, media lounge, playroom, gym, home office, or potential reconfiguration opportunity, subject to proper approvals. The primary bedroom features tray ceilings, a walk-in closet, and a generous feel. A major convenience, the lower level includes a finished area with 2 bedrooms, full bath, kitchen sink and separate entrance — ideal for extended lifestyle flexibility. Buyer to verify intended and permitted use. With approximately 4,683 sq ft total per provided floor plan, a two-car garage with extra-wide bays, garage sink, basement access, and driveway parking for up to 8 cars, this home offers a rare combination of interior scale, lot size, and adaptability. Come experience the ceiling height, light, and scale in person — this one truly lives large.

Listing snapshot

Days on site
34 days
Listed on MLS
Oct 4, 2026
Full baths
3
Half baths
0
Annual property tax (MLS)
$20,147
Tax year
2026
Area source (MLS)
Measured
Listing brokerage
Century 21 Shared Purpose
MLS ID
KEY1055112
Last updated
Sep 29, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
2005
Garage
Yes
Garage spaces
2
Total parking
10
Parking
Driveway
Water source
Public
Sewer
Cesspool
Utilities
Cable Connected, Electricity Connected

Interior features

Basement
Finished, See Remarks, Walk-Out Access
Heating
Baseboard
Cooling
Central Air
Interior
Eat-in Kitchen
Appliances
Dishwasher, Electric Range, Microwave, Refrigerator

Exterior features

Architectural style
Colonial
Construction materials
Vinyl Siding
Private pool
No

Schools (MLS)

Elementary school
Helen B Duffield Elementary School
Elementary school district
Connetquot
Middle school
Ronkonkoma Middle School
Middle school district
Connetquot
High school
Connetquot High School
High school district
Connetquot

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 11779Show interactive map
471 Southport Street

Islip · Suffolk County, NY 11779

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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.