by RH Advisors

See Home Value
$395,000
● House - Off Market

21 Francisco Avenue

Islip, NY 11722
bedrooms
4 Beds
bathrooms
3 Baths
$520,442
RealtyHop Estimate
35.18%
Since Oct 1, 2020
National-US
Primary Model
Unit Size
-
Days on Market
-
Land Size
0.18 acres
Price per sqft
-
Property Type
House
Property Taxes
$907
HOA Dues
-
Year Built
1969

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Last updated: 6 months ago (OneKey MLS #KEYL3217420)

Price History

Date / Event Date Event Price
Apr 15, 2026 Sold
Sold
Feb 27, 2026 In contract -
In contract
Jan 19, 2026 Listed by EXIT Realty Premier $649,999
Listed by EXIT Realty Premier
Immaculate Ranch-Style Home on a dead end cul-de-sac in the Heart of Central Islip! This beautifully maintained 4-bedroom, 3-bath home offers approximately 1,995 square feet of comfortable living space and is truly in move-in condition. The main level features an inviting layout with hardwood and tile flooring, an eat-in kitchen with stainless steel appliances, spacious bedrooms, and a primary suite with private bath access. Pride of ownership is evident throughout. House is featured with a finished basement with a separate outside entrance, offering exceptional flexibility. Ideal for extended living space, a home office, recreation area, or potential accessory use (with proper permits), the private entrance adds both convenience and versatility. Brand new cesspool. The property also offers private driveway parking and a generously sized yard perfect for entertaining or relaxing. Conveniently located near shopping, schools, transportation, and major roadways.
Jan 16, 2026 No longer available -
No longer available
Jan 6, 2026 Price Decreased $679,999
↓ $5K (0.7%)
Price Decreased
Show More

Property Highlights

Fireplace

Building Info

Overview

    General

  • Year Built: 1969
  • Effective Year Built: 1969
  • Bedroom Count: 0
  • Building Condition: 0
  • Building Quality: 0
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 1
  • Garage Square Area: 252
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 7,841
  • Lot Size Depth Feet: 1,000
  • Lot Size Frontage Feet: 800
  • Total Building Area: 1,795
  • Building Area: 1,543
  • Building Area Measurement: L

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heated Square Feet: 1,543
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000000180
  • Standard Land Use Code: 1001
  • County Land Use Code: 210
  • Legal Description 1: X2223168Y208890 T012H00000000

Neighborhood

  • School District Name: Central Islip Union Free School District
  • School Tax School District: CENTRAL ISLIP
  • Census Tract: 145706

Zoning

  • Zoning: B

Geography

  • District: 0500-0
  • Section: 50.07
  • Parcel: 0500-079.00-02.00-094.000
  • Block: 9000
  • Lot: 200.094
  • Municipality: ISLIP
  • Latitude: 40.7962
  • Longitude: -73.1935

    Address

  • Full Address: 21 Francisco Ave
  • Address - House Number: 21
  • Address - Street Name: Francisco
  • Address - Suffix Type: Ave
  • State: NY
  • City Name: Central Islip
  • Carrier Code: C031
  • 4-Digit Zip Code: 2424
  • Zip Code: 11722

Valuation

    Tax

  • Tax Year: 2023
  • Tax Amount: $1,118,164
  • Tax Rate Code Area: 472813

    Appraisal Valuation

  • Standard Deviation: 0.2549
  • Valuation Date: Feb 14, 2024
  • Confidence Score: 63
  • Final Value: 553,160
  • High Value: 694,174
  • Low Value: 412,146

    Market Valuation

  • Market Total Value: $484,890
  • Market Land Value: $85,165
  • Market Improvement Value: $399,725

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $35,300
  • Assessed Land Value: $6,200
  • Assessed Improvements Value: $29,100

    Sales

  • Current Sale Contract Date: Sep 29, 2020
  • Current Sale Recording Date: Oct 30, 2020
  • Current Sale Price:
  • Current Sale Document Type: 27
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 Central Islip


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Frequently Asked Questions

When was property at 21 Francisco Avenue built and last sold?
The property at 21 Francisco Avenue was built in 1969 and last sold on Sep 29, 2020 for $395,000.
How much is this home worth?
The estimated value of the home located at 21 Francisco Avenue is $661,214.
What are some comparable homes to 21 Francisco Avenue?
There are currently no comparable homes to 21 Francisco Avenue.

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