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Hauppauge 11788 Hauppauge
378 Mac Arthur Boulevard
Photo of 378 Mac Arthur Boulevard
Sold on Jul 1, 2026

22

Map

Photo of 378 Mac Arthur Boulevard
Photo of 378 Mac Arthur Boulevard
$750,000
● House - Off Market

378 Mac Arthur Boulevard

Islip, NY 11788
bedrooms
4 Beds
bathrooms
3 Baths
square feet
1,932 Ft²
$4,571
Est. Monthly

About This Property

HAUPPAUGE – Spacious Expanded Cape on Over Half an Acre

Welcome to your new home! This warm and inviting expanded cape offers 4 bedrooms, 3 full baths, and sits beautifully on a .62-acre flat, usable lot in the heart of Hauppauge.

Step into the cozy living room, featuring a wood-burning fireplace perfect for relaxing evenings. The enormous den with vaulted ceilings creates an airy, open atmosphere ideal for entertaining or gatherings.

The master bedroom suite provides a peaceful retreat, while the second floor features two generously sized bedrooms and a full bath-perfect for guests or  members. You'll love the abundance of closet space throughout this home.

The finished basement offers four spacious rooms with a separate outside entrance-ideal for a home office, gym, recreation area, or guest quarters.

Enjoy the outdoors on your large, level property, complete with a circle driveway offering plenty of off-street parking, plus a detached 2-car garage.

This home truly has it all-space, comfort, and endless possibilities both inside and out.
Unit Size
1,932 Ft²
Days on Market
154 days
Land Size
0.62 acres
Price per sqft
$357
Property Type
House
Property Taxes
$1,187
HOA Dues
-
Year Built
-

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Cap Rate Calculator

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Cap Rate 100% Occupancy
N/A (extreme outlier)

What does this mean?

Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.

How much can I actually make?

Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.

How is cap rate calculated?

Cap Rate = Net Operating Income (NOI) / Property Asset Value.

When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.

Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.

Last updated: 5 months ago (OneKey MLS #KEY942339)

Price History

Date / Event Date Event Price
Jul 1, 2026 Sold
Premium
Sold
Feb 28, 2026 In contract -
In contract
Feb 10, 2026 In contract -
In contract
Jan 28, 2026 Listed by HomeSmart Dynamic Realty $689,000
Listed by HomeSmart Dynamic Realty
Mar 1, 2004 Sold
Premium
Sold

Property Highlights

Garage
Fireplace

Building Info

Overview

    General

  • 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: 0
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 27,007
  • Lot Size Frontage Feet: 1,000
  • Total Building Area: 0
  • Building Area: 0

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000000620
  • Standard Land Use Code: 1001
  • County Land Use Code: 210
  • Legal Description 1: X2222585Y217892 T001H00000000

Neighborhood

  • School District Name: Hauppauge Union Free School District
  • School Tax School District: HAUPPAUGE
  • Census Tract: 145803

Zoning

  • Zoning: AAA

Geography

  • District: 0500-0
  • Section: 50.01
  • Parcel: 0500-015.00-01.00-003.002
  • Block: 5000
  • Lot: 100.003
  • Municipality: ISLIP
  • Latitude: 40.8209
  • Longitude: -73.1952

    Address

  • Full Address: 378 Mac Arthur Blvd
  • Address - House Number: 378
  • Address - Street Name: Mac Arthur
  • Address - Suffix Type: Blvd
  • State: NY
  • City Name: Hauppauge
  • Carrier Code: C064
  • 4-Digit Zip Code: 3057
  • Zip Code: 11788

Valuation

    Tax

  • Tax Year: 2023
  • Tax Amount: $1,247,937
  • Tax Rate Code Area: 472806

    Appraisal Valuation

  • Standard Deviation: 0.2305
  • Valuation Date: Feb 14, 2024
  • Confidence Score: 68
  • Final Value: 784,074
  • High Value: 964,859
  • Low Value: 603,289

    Market Valuation

  • Market Total Value: $799,450
  • Market Land Value: $256,868
  • Market Improvement Value: $542,582

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $58,200
  • Assessed Land Value: $18,700
  • Assessed Improvements Value: $39,500

    Exemptions

  • Homeowner Exemption: Yes

    Sales

  • Current Sale Contract Date: Jan 16, 2004
  • Current Sale Recording Date: Mar 01, 2004
  • Current Sale Price:
    Premium
  • Current Sale Document Type: 12
Data used for valuation calculations is provided by RealtyHop, and other third party sources
Request mortgage information redaction

Comparables

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

About Hauppauge

Stats & Trends

Median Asking:

$775,000

Sale Price/ft²

$401

Below Asking

0.01%

Average Days on Market

85

Average Home Size

2053 ft²

Average Home Age

54 years

Currently For Sale

24 Listings
Based on RH Advisors, Inc. calculations of home data from MLS and/or public records.

Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Unit for rent at 83 Milmay Avenue, Hauppauge, NY, 11788

$4,000 /mo

  • 2 Beds
  • 1 Bath
  • 1,189 ft²
83 Milmay Avenue, Hauppauge, NY, 11788 Listing by Michael Y. Fong
Unit for rent at 4 Wadsworth Place, Smithtown, NY, 11787

$5,500 /mo

  • 4 Beds
  • 1 Bath
  • 1,900 ft²
4 Wadsworth Place, Smithtown, NY, 11787 Listing by Melissa C. Koppelman CBR
Unit for rent at 211 Hawthorne Avenue, Central Islip, NY, 11722

$2,699 /mo

  • 1 Bed
  • 1 Bath
  • 790 ft²
211 Hawthorne Avenue, Central Islip, NY, 11722 Listing by Jacqueline Nedvin

Rentals Near You

Click here to view more rentals in the neighborhood.
OneKey

Last Updated: 5 months ago
Data Source: OneKey MLS

Frequently Asked Questions

When was property at 378 Mac Arthur Boulevard built and last sold?
The property at 378 Mac Arthur Boulevard was built in and last sold on Jan 16, 2004 for $410,000.
How much is this home worth?
The estimated value of the home located at 378 Mac Arthur Boulevard is $0.
What are some comparable homes to 378 Mac Arthur Boulevard?
There are currently no comparable homes to 378 Mac Arthur Boulevard.
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