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MLS ID KEY1021137Last updated Oct 10, 2026

Single Family

27 Ontario Street

Active · Brookhaven · Suffolk County, NY 11770

Bedrooms
4 Beds
Bathrooms
2 Baths
Year built
1970
Est. monthly taxes
$289.42
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About this home

Classic Fire Island charm meets endless potential in this spacious 4-bedroom, 2-bath beach cottage in the heart of Ocean Bay Park. Set on an oversized 100x100 lot and just moments from the ocean, this home offers the kind of easy coastal living that makes summers here so special — with plenty of room for a pool. Designed with a unique and functional layout, the home features two bedrooms and a full bath on one wing, while the opposite side offers two additional bedrooms and another full bath — all centered around a bright, open living space. A sunken living room adds character and creates a natural gathering spot, flowing into the kitchen and dining area for relaxed entertaining. With both front and back decks, there’s plenty of room to enjoy sunny afternoons, outdoor dining, and cool summer nights. Full of classic beach house charm, this is a rare opportunity to own a timeless Fire Island cottage on an oversized property, ready to be enjoyed as-is or reimagined over time.

Listing snapshot

Days on site
59 days
Listed on MLS
Jul 2, 2026
Full baths
2
Half baths
0
Annual property tax (MLS)
$3,473
Tax year
2025
Area source (MLS)
Public Records
Listing brokerage
The Agency Northshore NY
MLS ID
KEY1021137
Last updated
Oct 10, 2026

General features

Property type
Single Family
Property subtype
Single Family Residence
Year built
1970
Garage
No
Parking
None
Water source
Public
Sewer
Cesspool
Utilities
Cable Connected, Electricity Connected

Interior features

Heating
Other
Cooling
Ductless
Interior
First Floor Bedroom, First Floor Full Bath, Beamed Ceilings, Breakfast Bar, Eat-in Kitchen, High Ceilings
Appliances
Convection Oven, Cooktop

Exterior features

Architectural style
Bungalow
Construction materials
Wood Siding
Private pool
No

Schools (MLS)

Elementary school
Woodhull School
Elementary school district
Fire Island
Middle school
Islip Middle School
Middle school district
Islip
High school
Islip High School
High school district
Islip

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

Recent activity

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

Location

Brookhaven · Suffolk County, NY 11770Show interactive map
27 Ontario Street

Brookhaven · Suffolk County, NY 11770

Google Maps directions

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.