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Port Jefferson, NY

Building

Port Jefferson, NY Office Buildings for Sale

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Mount Sinai, NY Brookhaven, NY East Setauket, NY Coram, NY Selden, NY Centereach, NY Ronkonkoma, NY Miller Place, NY

Two-Level Office Building

Updated: Sep 9

Two-Level Office Building

903 Main Street, Port Jefferson, NY 11777

Contact for pricing

Two‑level office building with private office suites
Original hardwood floors, natural light, and closet storage in the suites
Dedicated wall‑mounted mini‑split central A/C units
Dedicated parking lot on the property
Sale includes separate 905 Main Street structure and cottage at 110 Robbins Street

Renovated Office Building

Updated: Sep 15

Renovated Office Building

311 Barnum Avenue, Port Jefferson, NY 11777

Contact for pricing

Five private offices plus a spacious conference room
25 private on‑site parking spaces
Two handicap‑accessible restrooms
Full eat‑in kitchen included
Dry storage and accessible attic storage

Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center

Based on your search, we've compiled 36 Potential Opportunities for your consideration. Besides 2 Active listings in Port Jefferson, NY, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 27 Off-Market properties to explore as potential leads, plus 3 Land Listings that present a potential for development.

Opportunities in Nearby Cities

Here are 4 Similar properties we found in Nearby Locations for your consideration.

Medical Office Building with Parking

Medical Office Building with Parking

Stonybrook, NY 11790

Contact for pricing

11,000 sqft 39.00 AC lot

Located on County Road 97 near Stony Brook University and Stony Brook University Hospital, with B1-Residence zoning.

School Facility with Administrative Space

School Facility with Administrative Space

Stonybrook, NY 11790

Contact for pricing

73,990 sqft 20.04 AC lot

B1-zoned property with substantial land area and connections to established academic and medical destinations.

Character Office Building with Basement

Character Office Building with Basement

20 Manor Road, Smithtown, NY 11787

$858,000

Two-level layout includes private offices, conference space, and on-site parking.

Professional Office Building with Parking

Professional Office Building with Parking

8 Manor Road, Smithtown, NY 11787

Contact for pricing

3,500 sqft

Well-maintained office building with multiple private offices, conference room, and rear parking for employees and visitors.

Potential Development Sites for Consideration

Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

J-2 Zoned Commercial Land

J-2 Zoned Commercial Land

N Country Roads, Rocky Point, NY

$390,000

0.41 AC lot

Commercial land in Rocky Point with J-2 zoning and potential for office, retail, workshop, and automotive-oriented uses.

Commercial Land Along Highway

Commercial Land Along Highway

1467 Montauk Highway, Mastic, NY 11950

$950,000

0.55 AC lot

Vacant commercial parcel with water available and public sewer.

Commercial Land Across From Apartments

Commercial Land Across From Apartments

770 N Broadway, Amityville, NY 11701

$1,999,990

0.95 AC lot

E Business zoning with public water and public sewer serves the commercial parcel.

Off-Market Properties in Port Jefferson, NY

Consider similar Off-Market properties in Port Jefferson, NY. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

518-526 Main St

OFFICE BUILDING

518-526 Main St, Port Jefferson, NY 11777

Estimated value:

$3,350,000

4,400 sqft 1.85 AC lot

12 Walnut St

OFFICE BUILDING

12 Walnut St, Port Jefferson, NY 11777-2164

Estimated value:

$735,000

0.11 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$460,000

0.15 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$755,000

0.28 AC lot

620 Belle Terre Rd

PROFESSIONAL BUILDING

620 Belle Terre Rd, Port Jefferson, NY 11777-2500

Estimated value:

$280,000

0.64 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$250,000

0.06 AC lot

1000 Main St

PROFESSIONAL BUILDING

1000 Main St, Port Jefferson, NY 11777-2250

Estimated value:

$285,000

0.25 AC lot

1227 Main St

OFFICE BUILDING

1227 Main St, Port Jefferson, NY 11777-2227

Estimated value:

$285,000

0.24 AC lot

39 Broadway

OFFICE BUILDING

39 Broadway, Port Jefferson, NY 11777-1201

Estimated value:

$290,000

0.04 AC lot

39 Broadway

OFFICE BUILDING

39 Broadway, Port Jefferson, NY 11777-1201

Estimated value:

$290,000

0.04 AC lot

39 Broadway

OFFICE BUILDING

39 Broadway, Port Jefferson, NY 11777-1201

Estimated value:

$290,000

0.04 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$280,000

0.22 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$290,000

0.15 AC lot

635 Belle Terre Rd

PROFESSIONAL BUILDING

635 Belle Terre Rd, Port Jefferson, NY 11777-1935

Estimated value:

$270,000

3.00 AC lot

640 Belle Terre Rd

OFFICE BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$290,000

0.08 AC lot

251 Oakland Ave

PROFESSIONAL BUILDING

251 Oakland Ave, Port Jefferson, NY 11777-2602

Estimated value:

$270,000

0.98 AC lot

70 Country Rd

PROFESSIONAL BUILDING

70 Country Rd, Port Jefferson, NY 11777-2161

Estimated value:

$265,000

3.44 AC lot

640 Belle Terre Rd

PROFESSIONAL BUILDING

640 Belle Terre Rd, Port Jefferson, NY 11777-1936

Estimated value:

$290,000

0.15 AC lot

646 Main St

OFFICE BUILDING

646 Main St, Port Jefferson, NY 11777-2235

Estimated value:

$285,000

0.34 AC lot

414 Main St

OFFICE BUILDING

414 Main St, Port Jefferson, NY 11777-1686

Estimated value:

$280,000

0.87 AC lot

118 Country Rd

PROFESSIONAL BUILDING

118 Country Rd, Port Jefferson, NY 11777-2120

Estimated value:

$290,000

1.23 AC lot

116 Oakland Ave

OFFICE BUILDING

116 Oakland Ave, Port Jefferson, NY 11777-2172

Estimated value:

$295,000

0.34 AC lot

Port Jefferson, NY Office Buildings Market Trends and Statistics

Explore 29 office buildings for sale in Port Jefferson, NY on our real estate platform.

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Top Commercial Asset Segments

Commercial property segments ranked by active listings on the market

Demographics Overview

Population 9,347

Population Growth (5Y) +4.4%

Median Household Income $148,519

Listings Trend

New vs delisted commercial listings in Suffolk County

New Delisted

Total CRE Inventory on Market (SF)

Property Size Breakdown

The majority of commercial real estate listings in Port Jefferson fall within the 2,500 to 5,000 square foot range.

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