Nassau County, NY Office Buildings for Sale

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Updated: Mar 9

New Medical Office Building

441 FRANKLIN AVE, Franklin Square, NY 11010

$2,650,000

9,800 sqft

Newly constructed 7,500 sq. ft. medical and professional office building
ADA compliant with elevator access to all levels
Central air cooling and heating system included
11 parking spaces (private) for staff and patients/clients
Office building designed for modern business use with versatile, new construction space

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This listing looks promising.

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441 FRANKLIN AVE, FRANKLIN SQUARE, NY 11010

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Est. Cap Rate

6.5%
Above avg (5.9%)
Est. NOI

$172K
Annual
Price @ 7% Cap

$2.46M
Suggested

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Updated: Jul 22

Brick Professional Office Building

220 Old Country Road, Mineola, NY 11501

$4,800,000

0.21 AC lot

13,000‑square‑foot professional office building on a 0.2089‑acre site
Two recently installed rooftop HVAC units
Natural gas boiler approximately 6 years old
Second floor, common areas, and restrooms renovated approximately 8 years ago
Solid brick exterior with central air and natural gas heating

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Freestanding Office & Medical Building

325 W Park Avenue, Long Beach, NY 11561

$2,950,000

0.23 AC lot

Single-story office/medical building with private offices, treatment rooms, central air, and abundant parking on Park Avenue.

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Fully Occupied Brick Office Building

91 Carman Avenue, Cedarhurst, NY 11516

$2,390,000

0.08 AC lot

Brick construction, natural gas heat, and central air serve the office property.

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Freestanding Medical Office Building

325 W Park Avenue, Long Beach, NY 11561

$2,950,000

5,084 sqft 0.23 AC lot

Single-story office/medical layout with treatment rooms and ample on-site parking for patient and client access.

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Mixed-Use Property with Transit Access

29 & 21-23 Broadway, Lynbrook, NY 11563

$4,300,000

0.71 AC lot

Two frame buildings offer office and multipurpose configurations with central air, driveway parking, and prominent signage.

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Office Building with Private Offices

600 Hicksville Road, Bethpage, NY 11714

$1,298,888

0.14 AC lot

Flexible interior includes open work areas, storage, and driveway and assigned parking.

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Two-Story Office Portfolio Opportunity

445 Northern Boulevard, Great Neck, NY 11021

$15,900,000

0.58 AC lot

Two contiguous three-story office buildings totaling approximately 48,000 RSF on a single Great Neck campus site.

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Commercial Office Building with Warehouse

150 Jerusalem Ave, Massapequa, NY 11758

$1,299,999

3,700 sqft 0.22 AC lot

Two-story office building with warehouse and residential dwelling.

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Professional Office Building

146 E 2nd Street, Mineola, NY 11501

$1,600,000

0.15 AC lot

Existing layout includes reception space, private offices, an open work area, conference room, and employee kitchen.

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Fully Leased Office Building

337-343 - 20 Blake Merrick & Blake Road, Lynbrook, NY 11563

$1,995,000

0.24 AC lot

Brick office property with flexible suites, private parking, and central air conditioning.

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Two 3-Story Contiguous Office Buildings

445 Northern Boulevard, Great Neck, NY 11021

$15,900,000

48,000 sqft 1.75 AC lot

Two contiguous three-story office buildings on a 1.75-acre campus in Great Neck, built in 1966.

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Fully Occupied Office Building

91 Carman Avenue, Hempstead, NY 11516

$2,390,000

3,500 sqft

Central air supports this established office property built in 1924.

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Renovated Professional Building in Rockville

19 Morris Ave, Rockville Centre, NY 11570

$1,799,999

3,460 sqft

3,460 SF professional office building in downtown Rockville Centre.

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Renovated Freestanding Office Building

134 jefferson, Inwood, NY 11096

$2,200,000

0.23 AC lot

Finished lower-level space and a walk-up attic expand the building’s usable configuration.

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Office Building with Vacancies

107 S CENTRAL AVE, Valley Stream, NY 11580

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8,030 sqft

For sale office building offering two current vacancies near the Valley Stream LIRR station.

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Two-Building Office and Retail Property

29 & 21-23 Broadway, Lynbrook, NY 11563

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28,164 sqft

Two-building office/multiuse property includes parking, central air, and a skylight on a commercially zoned lot.

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Renovated Office Building

22 BAYVIEW AVE, Manhasset, NY 11030

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3,000 sqft

Flexible office property with vacant lower-level space, occupied upper-floor tenancy, and private parking in downtown Manhasset.

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Freestanding Two-Story Office Building

301 Central Ave, Bethpage, NY 11714

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1,910 sqft 0.10 AC lot

Professional office property with executive offices, kitchen, basement, and private parking.

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Class A Medical Office Building

875 Merrick Ave, Westbury, NY 11590

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43,000 sqft

Full building opportunity with 150 KVA backup generator, sewer connection, and slab-level 1st-floor space for imaging use.

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Vacant Office Building

366 S OYSTER BAY RD, Hicksville, NY 11801

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1,270 sqft

Office building offered vacant at sale for straightforward owner-occupant or tenant-ready redevelopment.

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Two-Building Office Plaza

Jericho Plaza 1 & 2, Jericho, NY 11753

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102,655 sqft

Well-appointed office campus with renovated common areas, conference facilities, and direct expressway access.

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Three-Story Office Building

575 Jericho Tpke, Jericho, NY 11753

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32,400 sqft 2.13 AC lot

Three-story office building on a 2.13-acre parcel with 132 dedicated parking spaces.

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Office Building with Gated Parking

128 Atlantic Avenue, Lynbrook, NY 11563

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12,600 sqft 0.48 AC lot

Office building featuring 12 offices, conference rooms, and gated parking.

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Nassau County, NY Office Buildings Market Trends and Statistics

Explore 88 office buildings for sale in Nassau County, NY, showcased through 88 active listings on our real estate platform. These investment opportunities span a total of 799,972 square feet of properties for sale, with an estimated market value of $98,161,774.

Sale prices for office properties in Nassau County, NY start at $1,149,000, averaging $4,090,073, and reaching up to $16,000,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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