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378 Mac Arthur Boulevard, 
Hauppauge, NY 11788

$689,000

4

Beds

3

Baths

1,932

Sq Ft

Single Family

Pending

Listed by

John Cornell

Homesmart Dynamic Realty

Last updated:

February 27, 2026, 08:44 PM

MLS#

942339

Source:

OneKey MLS

About This Home

378 Mac Arthur Boulevard

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.

Home Facts

Single Family

3 Baths

4 Bedrooms

Built in 1975

Price Summary

689,000

$356 per Sq. Ft.

MLS #:

942339

Last Updated:

February 27, 2026, 08:44 PM

Added:

a month ago

Rooms & Interior

Bedrooms

Total Bedrooms:

4

Bathrooms

Total Bathrooms:

3

Full Bathrooms:

3

Interior

Living Area:

1,932 Sq. Ft.

Structure

Structure

Architectural Style:

Exp Cape

Building Area:

2,735 Sq. Ft.

Year Built:

1975

Lot

Lot Size (Sq. Ft):

27,007

Finances & Disclosures

Finances

Price:

$689,000

Price per Sq. Ft:

$356 per Sq. Ft.

Source:OneKey MLS
Copyright 2026 OneKey MLS. All rights reserved. Listings courtesy of OneKey MLS as distributed by MLS GRID . OneKey MLS provides content displayed here (“provided content”) on an “as is” basis and makes no representations or warranties regarding the provided content, including, but not limited to those of non-infringement, timeliness, accuracy, or completeness. Individuals and companies using information presented are responsible for verification and validation of information they utilize and present to their customers and clients. OneKey MLS will not be liable for any damage or loss resulting from use of the provided content or the products available through Portals, IDX, VOW, and/or Syndication. Recipients of this information shall not resell, redistribute, reproduce, modify, or otherwise copy any portion thereof without the expressed written consent of OneKey MLS.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.