Nassau County, NY Triplexes for sale

Updated: Jun 16

Three-Family Residential Income Property

390 Atlantic Avenue, East Rockaway, NY 11518

$1,200,000

Three‑family home built in 1925 with natural gas heat and public utilities (public water and public sewer).
Unit #1 features a spacious living room with fireplace, eat‑in kitchen with granite counters and stainless steel appliances, plus double wall oven.
Main level includes a first floor primary/master bedroom and a first floor full bath.
Two additional apartments offer living rooms, eat‑in kitchens, bedrooms, and full baths.
Oversize garage with driveway parking and a fully fenced yard for outdoor use.

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Updated: Mar 11

Renovated Duplex with Basement Kitchen

75 Anstice Street, Oyster Bay, NY 11771

$1,250,000

0.19 AC lot

Newly renovated colonial duplex with 3 bedrooms and 3 bathrooms, built in 1903
Two‑unit layout: first‑floor unit has two bedrooms and a modern eat‑in kitchen with kitchen island
Second‑floor unit includes a private one‑bedroom layout plus additional attic space
Finished basement with its own kitchen, along with in‑unit washer and dryer for both units
Central air conditioning and natural gas heating; public water and public sewer

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Mixed-Use Building with 50' Frontage

3943 Merrick Road, Seaford, NY 11783

$2,988,000

0.23 AC lot

Mixed-use building with restaurant space, apartments, and offices, positioned on 50' frontage with 186 parking spaces.

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Legal Three-Family Residence

38 Wood St, Lynbrook, NY 11563

$828,000

Three separate units in a legal three-family home with an unfinished basement and dedicated laundry area.

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Renovated Three-Family Home

38 Vincent St, Rockville Centre, NY 11570

$1,599,000

0.23 AC lot

Three newly renovated units with natural gas heating and municipal sewer service, suited for owner-occupants or investors.

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Occupied Triplex with Finished Basement

370 E Broadway, Long Beach, NY 11561

$1,275,000

0.11 AC lot

Two-story Cape with three apartments; boiler installed Dec 2025 and the basement unit is currently empty.

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Oceanfront Three-Family Home

23 Troy Avenue, East Atlantic Beach, NY 11561

$3,650,000

0.04 AC lot

Rare oceanfront triplex in East Atlantic Beach.

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Oceanfront Triplex in East Atlantic Beach

23 Troy Ave, East Atlantic Beach, NY 11561

$3,650,000

Rare oceanfront three-family home on a double lot.

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Victorian Multi-Family Home, Lynbrook

38 Wood Street, Lynbrook, NY 11563

$828,000

0.20 AC lot

Rare legal three-family home in the heart of Lynbrook.

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Renovated Three-Family Home Near Downtown

38 Vincent St, Rockville Centre, NY 11570

$1,599,000

Newly renovated three-family home near Downtown Rockville Centre.

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Nassau County, NY Triplexes Market Trends and Statistics

Explore 10 triplexes for sale in Nassau County, NY, showcased through 10 active listings on our real estate platform. These investment opportunities span a total of 0 square feet of properties for sale, with an estimated market value of $18,867,000.

Sale prices for three-family homes in Nassau County, NY start at $828,000, averaging $1,886,700, and reaching up to $3,650,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

Featured Nassau County Real Estate Agencies

Realmo connects you with licensed Nassau County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

Charles Rutenberg Realty, Inc.

255 Executive Drive, Suite 104 Hicksville, NY 11803

Phone: 15165757500

www.crrli.com

Coldwell Banker American Homes

1856 Hempstead Turnpike Hempstead, NY 11554

Phone: 18666640347

www.cbamhomes.com

Laffey Real Estate

55 Northern Blvd., East Hills, NY 11548

Phone: 18882896902