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MLS ID KEY1050283Last updated Oct 24, 2026

Office

229 Railroad Avenue

Active · Islip · Suffolk County, NY 11782

Asking price$1,750,000Request a Showing
Year built
1991
Est. monthly taxes
$2,379.75
Property gallery0 / 39
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About this home

229 Railroad Avenue, Sayville, NY Fully Rented Medical Office Investment | 4,697 SF | 0.49 Acres For the first time ever, 229 Railroad Avenue is being offered for purchase — a rare opportunity to acquire a fully rented, medical-grade commercial building in the heart of Sayville. This impeccably maintained asset provides immediate, stable income and represents a premier investment in one of Long Island’s most desirable downtown corridors. Situated on 0.49 acres, the 4,697-square-foot, single-level building is professionally designed and currently configured with five private medical/professional suites, each with its own reception area, operator rooms, and private bathrooms. All suites are connected by a shared central hallway, allowing independent operation while maintaining efficient building flow. The property offers approximately 25 on-site parking spaces, a highly valuable amenity for medical and professional tenants, and is conveniently located within walking distance of both the Sayville Train Station and Main Street. Property Highlights - Fully rented investment property with immediate cash flow - 4,697 SF medical/professional office building - Situated on 0.49 acres - Five private suites with reception areas, operator rooms, and bathrooms - Approximately 25 dedicated parking spots - Medical-grade infrastructure throughout - Flexible layout suitable for medical, healthcare, or professional office use - Walking distance to Sayville Train Station and downtown amenities - First-time offering This exceptionally maintained building combines strong in-place tenancy, ample parking, specialized medical buildout, and a prime Sayville location. Opportunities to acquire a medical office investment of this caliber are exceedingly rare. Financials, rent roll, and pricing available upon request. Schedule your private tour today.

Listing snapshot

Days on site
15 days
Listed on MLS
Oct 13, 2026
Annual property tax (MLS)
$28,557
Tax year
2025
Listing brokerage
Douglas Elliman Real Estate
MLS ID
KEY1050283
Last updated
Oct 24, 2026

General features

Property type
Office
Year built
1991
Total parking
25
Water source
Public
Sewer
Cesspool
Utilities
Electricity Connected, Natural Gas Connected

Interior features

Heating
Ducts
Cooling
Central Air

Exterior features

Construction materials
Frame

Schools (MLS)

Elementary school district
Sayville
Middle school district
Sayville
High school district
Sayville

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

Islip · Suffolk County, NY 11782Show interactive map
229 Railroad Avenue

Islip · Suffolk County, NY 11782

Google Maps directions

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