Duplex

New Castle County, DE Duplexes for Sale

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Wilmington, DE Dover, DE Milford, DE Millsboro, DE Lewes, DE Seaford, DE Frankford, DE Newark, DE
21 properties
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Updated Duplex in Wilmington
Updated: Mar 27
Updated Duplex in Wilmington

1607 W 4TH Street, Wilmington, DE 19805

$230,000
1,800 sqft 0.04 AC lot
Brick 2‑unit property at 1607 W 4th St, Wilmington, DE 19805
Main‑floor unit: 1 bed, 1 bath; described as already updated
Second‑floor unit: 2 beds, 2 baths plus a bonus room for a home office or possible 3rd bedroom
Updated electrical systems
Central Air cooling and “Other (Heating)”
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1607 W 4TH Street, WILMINGTON, DE 19805

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Colonial Residential Income Duplex
Updated: May 6
Colonial Residential Income Duplex

330 MOURNING DOVE Drive, Newark, DE 19711

$795,000
4,946 sqft 0.75 AC lot
Colonial home built in 1997 with approximately 3,570 SF of finished living space
Finished basement adds about 600 SF and includes a separate 1‑bedroom, 1‑bath living area with its own kitchen
Main living area features a fireplace for cozy gatherings
Open floor plan with wood floors and carpeting, plus upgraded countertops and an eat‑in/breakfast area
Primary suite with private bath featuring dual vanities and ample closet space
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Twin/Duplex Near University of Delaware
Twin/Duplex Near University of Delaware

16 WHITE CLAY Drive, Newark, DE 19711

$695,000
1,575 sqft 0.50 AC lot

Twin/duplex on White Clay Creek, walking distance to Main Street.

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Two-Unit Duplex with Two Bedrooms
Two-Unit Duplex with Two Bedrooms

912 MCCABE Avenue, Wilmington, DE 19802

$425,000
2,100 sqft 0.12 AC lot

Duplex with two two-bedroom units, including a renovated first-floor layout and an upstairs unit with a long-term tenant.

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Mixed-Use Corner Property
Mixed-Use Corner Property

2501 & 2521 North Market St, Wilmington, DE 19802

$1,500,000
4,464 sqft

Renovated corner commercial building with flexible ground and lower-level space and two upper apartments, plus rear parking.

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Two-Unit Cape Cod with Garage
Two-Unit Cape Cod with Garage

310 SILVERBROOK Drive, Wilmington, DE 19804

$425,000
1,425 sqft 0.15 AC lot

Cape Cod offers two rental units with private laundry access and a detached two-car garage.

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Duplex with Private Rear Decks
Duplex with Private Rear Decks

623 CONCORD Avenue, Wilmington, DE 19802

$315,000
1,675 sqft 0.07 AC lot

Two-unit duplex with in-unit washer and dryer and separate private rear decks for flexible living arrangements.

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Duplex with Two Residential Units
Duplex with Two Residential Units

1226 NEW ST, Wilmington, DE 19808

$550,000
3,000 sqft

Two-unit residential income property with a vacant 3-bedroom home and a 2-bedroom unit over a 2-car garage.

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Central Business District Mixed-Use Building
Central Business District Mixed-Use Building

919 N ORANGE Street, Wilmington, DE 19801

$649,000
0.05 AC lot

3-story C-4 mixed-use property with a turnkey restaurant and two residential units above it.

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Well-Maintained Duplex with Side Yard
Well-Maintained Duplex with Side Yard

600 HOMESTEAD Road, Wilmington, DE 19805

$260,000
1,575 sqft 0.19 AC lot

Duplex offers two separate units with individual utilities and garages, supporting owner-occupant and rental use.

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Remodeled Mixed-Use Building For Sale
Remodeled Mixed-Use Building For Sale

1301 West 4th Street, Wilmington, DE 19805

$365,000

Three-story mixed-use building with commercial storefront and two residential units.

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Two-Unit Duplex Apartment Building
Two-Unit Duplex Apartment Building

1001 & 1003 W. 8th St. W 8TH Street, Wilmington, DE 19806

$950,000
4,350 sqft 0.11 AC lot

Duplex with separate entrances and a common-access basement, featuring four- and five-bedroom units plus limited off-street parking.

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Duplex Investment Property
Duplex Investment Property

2521 N TATNALL Street, Wilmington, DE 19802

$250,000
1,525 sqft 0.04 AC lot

Duplex with two separate income-producing units, offered for sale as-is for investors or owner occupants.

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Union Street Duplex For Sale
Union Street Duplex For Sale

202 N UNION St, Wilmington, DE 19805

$225,000
0.03 AC lot

Duplex with commercial and residential units, ideal for investors.

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Updated Victorian Twin Home
Updated Victorian Twin Home

Wilmington, DE 19805

$340,000
2,050 sqft

Move-in-ready three-story twin with 4 bedrooms, 2.5 baths, updated kitchen, and a dedicated third-floor owner suite.

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Renovated 3-Bedroom Twin Home
Renovated 3-Bedroom Twin Home

Wilmington, DE 19802

$318,500
1,175 sqft

Renovated 3-story brick twin home with 3 bedrooms, 1.5 baths, and central air, plus an unfinished basement.

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Income-Generating Duplex in Wilmington
Income-Generating Duplex in Wilmington

310 N DUPONT Rd, Wilmington, DE 19804

$379,000

Two-unit property, live in one, rent the other!

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All-Brick Twin Home
All-Brick Twin Home

Wilmington, DE 19805

$314,900
1,250 sqft

3-bedroom twin home with an attached garage, basement recreation room, and off-street parking via rear driveway.

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Twin-Style Residential Income Property
Twin-Style Residential Income Property

Wilmington, DE 19804

$200,000
1,500 sqft

Two-story twin with three bedrooms, one bathroom, full basement, and fenced rear yard, sold as-is.

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Updated Single-Family Home with Sunroom
Updated Single-Family Home with Sunroom

Wilmington, DE 19805

$625,000
2,025 sqft

Updated interior with hardwood floors, gas fireplace, sunroom, and an updated kitchen, plus a slate-patio backyard.

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Twin Home with Finished Basement
Twin Home with Finished Basement

Middletown, DE 19709

$415,000
3,250 sqft

Twin home offering an open main level, sunroom, and finished lower level with half bath and storage.

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Based on your search, we've compiled Potential Opportunities for your consideration. Besides 21 Active Listings in New Castle County, DE

New Castle County, DE Duplexes Market Trends and Statistics

Explore 21 duplexes for sale in New Castle County, DE, showcased through 21 active listings on our real estate platform. These investment opportunities span a total of 28,435 square feet of properties for sale, with an estimated market value of $6,395,000.

Sale prices for duplexes in New Castle County, DE start at $230,000, averaging $581,363, and reaching up to $1,500,000 — 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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