by RH Advisors

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Islip 11751 Islip
155 Smith Avenue
$690,000
● House - Off Market

155 Smith Avenue

Islip, NY 11751
bedrooms
4 Beds
bathrooms
2 Baths
square feet
2,100 Ft²
$4,368
Est. Monthly

About This Property

Step into timeless charm and character in this stunning ornate 3-story home in Islip that perfectly blends classic craftsmanship with modern comforts. From the moment you arrive, the eclectic curb appeal and welcoming front porch set the tone for a home that truly puts a smile on your face.

Inside, you'll find beautiful wide-plank wood floors, detailed moldings, french doors and elegant wainscoting that highlight the home's historic charm. The spacious kitchen features heated porcelain flooring, perfect for cozy mornings, while ornate cast iron radiators add both warmth and distinctive character throughout.

This versatile home offers 4–5 bedrooms and 2 full bathrooms, including a relaxing Jacuzzi tub. Enjoy movie nights with the home theater system, and take advantage of the partial basement for additional storage.

Major updates provide peace of mind with gas heat, a 5-year-old burner, separate hot water heater, and a roof approximately 10 years old. The home also includes solar panels with a transferable 23-year lease, helping to keep energy costs down.

Outside, the property continues to impress with beautiful mature plantings and a charming English-style garden, creating the perfect setting for entertaining or simply enjoying quiet moments of tranquility. Completing the property is a 1-car detached garage.

A truly special home filled with warmth, personality, and timeless appeal-a rare find in Islip.
Unit Size
2,100 Ft²
Days on Market
130 days
Land Size
0.13 acres
Price per sqft
$333
Property Type
House
Property Taxes
$935
HOA Dues
-
Year Built
1950

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Last updated: 4 months ago (OneKey MLS #KEY968322)

Price History

Date / Event Date Event Price
Jul 22, 2026 Sold
Sold
May 19, 2026 In contract -
In contract
Apr 9, 2026 Price Decreased $699,000
↓ $30K (4.1%)
Price Decreased
Mar 6, 2026 Listed by Signature Premier Properties $729,000
Listed by Signature Premier Properties

Property Highlights


Building Info

Overview

    General

  • Year Built: 1950
  • First Altered Year: 1988
  • Building Count: 13
  • Floor Count: 17
  • Total Unit Count: 1,947
  • Residential Unit Count: 1,934
  • Basement Type: 0

    Dimensions

  • Lot Area Sqft: 781,000
  • Lot Size Depth Feet: 978
  • Lot Size Frontage Feet: 689
  • Building Depth: 167
  • Building Frontage: 121
  • Gross Building Area: 1,264,820

    Building Floor Area

  • Residential Building Floor Area: 1,250,820
  • Commercial Building Floor Area: 14,000
  • Retail Building Floor Area: 14,000

    Floor Area Ratio

  • Built Floor Area Ratio: 2
  • Residential Floor Area Ratio: 3
  • Facilities Floor Area Ratio: 7

Building

  • Building Type: D6
  • Lot Type: 1
  • Land Use: 04
  • Irregular Lot Code: Y
  • Proximity Code: 1
  • Extension Code: N

Neighborhood

  • Community District: 103
  • City Council District: 1
  • Police Precinct: 5
  • Fire Company: E009
  • Health Area: 7800
  • Sanitation District Borough: 1
  • Sanitation Subsection: 1A
  • School District: 02

Zoning

  • Split Boundary Zone Indicator: N
  • Zoning: R7-2
  • Zoning Commercial Overlay 1: C1-5

Geography

  • Borough Name: MN
  • Borough Code: 1
  • Block: 111
  • Lot: 100
  • Borough Block Lot: 1001110100

    Address

  • Full Address: 20 Madison Street
  • Zip Code: 10038

Valuation

    Assessments Valuation

  • Assessed Total Value: $72,655,200
  • Assessed Land Value: $29,880,450

    Exemptions

  • Exempt Total Value: $72,655,200
Data used for valuation calculations is provided by RealtyHop, and other third party sources

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Islip


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Frequently Asked Questions

When was property at 155 Smith Avenue built and last sold?
The property at 155 Smith Avenue was built in 1950 and last sold on Jan 1, 1970 for $0.
How much is this home worth?
The estimated value of the home located at 155 Smith Avenue is $0.
What are some comparable homes to 155 Smith Avenue?
There are currently no comparable homes to 155 Smith Avenue.

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