Duplex House Plans - Architectural Designs

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Multi-Family Homes

Duplex House Plans

Offering a unique blend of affordability, functionality, and modern living, duplex house plans are quickly becoming a popular choice for homeowners and investors alike. Whether you envision spacious side-by-side units or practical stacked layouts, we have the perfect duplex floor plan to match your vision and budget.

What are Duplex House Plans?

A duplex is a multi-family house plan divided into two separate living spaces. Each unit features its own private entrance, living area, backyard (in many cases), and even a garage, depending on the desig...

Plan image - 52355WM:Traditional Duplex House Plan with 3 Bed Units - 1567 Sq Ft Each

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52355WM

Plan Number

starting at

$1,095

3,134

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Plan image - 623049DJ:Traditional Duplex House Plan with Matching 3 Bed, 3 Bath Units - 1464 Sq Ft Each

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623049DJ

Plan Number

starting at

$1,998

2,928

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Plan image - 51923HZ:Country Craftsman Duplex House Plan with 3-Bed, 2-Bath Units Under 1300 Square Feet

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51923HZ

Plan Number

starting at

$1,395

2,496

Sq. Ft.

6

Bed

4

Bath

1

Story

2

Cars

Plan image - 100324GHR:New American Duplex House Plan with 3 Bed 2 Bath Units - 1143 Sq Ft

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Exclusive

100324GHR

Plan Number

starting at

$1,845

2,286

Sq. Ft.

6

Bed

4

Bath

1

Story

Plan image - 135281GRA:Two-Story Contemporary Duplex House Plan with Matching 3-Bedroom Units - 1565 Sq Ft Each

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135281GRA

Plan Number

starting at

$1,150

3,130

Sq. Ft.

6

Bed

5

Bath

2

Story

2

Cars

Plan image - 48628FM:Two-Story Duplex Home Plan with 3 Beds and Great Room - 1397 Sq Ft Per Unit

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Exclusive

48628FM

Plan Number

starting at

$1,485

2,794

Sq. Ft.

6

Bed

4

Bath

2

Story

Tour

Plan image - 100305GHR:Modern Farmhouse Duplex House Plan with Matching 1046 Square Foot 3-Bed Units

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Exclusive

100305GHR

Plan Number

starting at

$1,845

2,092

Sq. Ft.

6

Bed

4

Bath

1

Story

Tour

Plan image - 623488DJ:Multi Family House Plan with Two 1-Bed Matching Units Under 700 Sq Ft Each

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623488DJ

Plan Number

starting at

$1,498

1,302

Sq. Ft.

2

Bed

2

Bath

1

Story

Plan image - 420163WNT:2-Bed Ranch Duplex with L-Shape Kitchen - 752 Per Unit

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Exclusive

420163WNT

Plan Number

starting at

$1,745

1,504

Sq. Ft.

4

Bed

2

Bath

1

Story

Plan image - 62360DJ:Craftsman Multi-Family House Plan with 2 Units - 3 Beds and 1616 Sq Ft Each

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62360DJ

Plan Number

starting at

$1,998

3,232

Sq. Ft.

6

Bed

4

Bath

1

Story

4

Cars

Tour

Plan image - 51914HZ:Modest Country Duplex House Plan With Matching 2-Bed and 2-Bath Units Under 1000 Sq Ft

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51914HZ

Plan Number

starting at

$1,345

1,994

Sq. Ft.

4

Bed

4

Bath

1

Story

Plan image - 100300GHR:Modern Duplex House Plan with 950 Square Foot Units with Roommate-Style Upstairs Layout

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Exclusive

100300GHR

Plan Number

starting at

$1,695

1,900

Sq. Ft.

4

Bed

4.5+

Bath

2

Story

Tour

Plan image - 623204DJ:Modern Farmhouse Duplex with 3 Bed Units Just Over 1700 Square Feet Each

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623204DJ

Plan Number

starting at

$2,098

3,422

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Plan image - 51959HZ:Traditional-Style Duplex House Plan with 2 Bed 2 Bath Units - 1098 Sq Ft Each

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51959HZ

Plan Number

starting at

$1,395

2,196

Sq. Ft.

4

Bed

4

Bath

1

Story

2

Cars

Plan image - 100327GHR:New American-Style Traditional Duplex with Matching 3-Bed 1300 Sq Ft Units

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Exclusive

100327GHR

Plan Number

starting at

$1,995

2,694

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Plan image - 52375WM:One-Story Duplex House Plan with 1-Bed Units - 395 Sq Ft Per Unit

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52375WM

Plan Number

starting at

$1,025

790

Sq. Ft.

2

Bed

2

Bath

1

Story

Plan image - 100303GHR:Duplex House Plan with Matching 1106 Square Foot 3-Bed Units

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Exclusive

100303GHR

Plan Number

starting at

$1,845

2,212

Sq. Ft.

6

Bed

4

Bath

1

Story

Plan image - 51969HZ:Modern Farmhouse Style Townhouse Duplex Plan with 3-Bedroom Units

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51969HZ

Plan Number

starting at

$1,595

3,141

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Tour

Plan image - 623179DJ:Modern Farmhouse Duplex House Plan with Matching 3-Bed Units Under 2200 Square Feet

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623179DJ

Plan Number

starting at

$2,198

4,354

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Plan image - 100310GHR:One Story Transitional-Style Duplex with 2 Bed Units Under 900 Square Feet

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Exclusive

100310GHR

Plan Number

starting at

$1,695

1,777

Sq. Ft.

4

Bed

4

Bath

1

Story

Plan image - 85338MS:Exclusive New American Duplex with Open Layouts for the Narrow Lot

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Exclusive

85338MS

Plan Number

starting at

$1,885

2,694

Sq. Ft.

6

Bed

4

Bath

2

Story

Plan image - 666218RAF:Modern Duplex with Side-By-Side 3-Bed Units Under 2000 Square Feet

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666218RAF

Plan Number

starting at

$1,944

3,608

Sq. Ft.

6

Bed

4.5+

Bath

3

Story

4

Cars

Plan image - 52402WM:Single-Story Duplex House Plan with 3-Beds Under 800 Sq Ft Per Unit

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52402WM

Plan Number

starting at

$1,095

1,570

Sq. Ft.

6

Bed

2

Bath

1

Story

Plan image - 52401WM:1-Bed Cottage Duplex with Matching Units - 992 Sq Ft

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52401WM

Plan Number

starting at

$1,095

992

Sq. Ft.

2

Bed

2

Bath

1

Story

1
2
3
4
5
...
23
24
25

Duplex House Plans FAQs

What is a duplex house plan?

A duplex house plan is a residential building design that consists of two separate living units within the same structure. Each unit typically has its own entrance, and the units are either stacked vertically or positioned side by side.

What are the key characteristics of duplex house plans?

Separate Entrances: Each unit in a duplex has its own entrance, providing privacy and independence to the residents.
Shared Wall: Duplex units share a common wall, which helps in optimizing land use and construction costs.
Mirror Image Design: Often, duplex units are designed to be mirror images of each other, maintaining symmetry in the overall structure.

What are the benefits of duplex house plans?

Cost-Efficiency: Duplexes can be more cost-effective than building two separate houses, making them an attractive option for homeowners and investors.
Rental Income: Homeowners can live in one unit and rent out the other, providing a source of rental income.
Shared Maintenance: Since the units are part of the same structure, maintenance costs are often shared between the occupants.

How did the duplex house style originate?

The duplex style has historical roots in European architecture, where townhouses and row houses often shared walls. In densely populated urban areas, duplexes became a practical solution to optimize living space while minimizing land use. As housing needs evolved, the duplex style expanded globally and adapted to different cultural and architectural preferences.

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Total Heated Area (Sq. Ft.)

Bedrooms

Bathrooms

Plan Type

Single-Family Homes

Stand-Alone Garages

Multi-Family Homes (duplexes, triplexes, and other multi-unit layouts)

591

Other (sheds, pool houses, offices)

Footprint

Width (feet)

Depth (feet)

Height (feet)

Floors

Styles

Barndominium

2

Modern Farmhouse

32

Craftsman

85

Country

96

New American

71

Scandinavian

5

Mid Century Modern

21

Cottage

19

Contemporary

98

Transitional

20

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A-Frame

Acadian

Adobe

Beach

4

Bungalow

Cabin

2

Cape Cod

Carriage

Coastal

5

Coastal Contemporary

1

Colonial

4

European

22

Farmhouse

17

Florida

5

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6

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3

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2

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2

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1

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1

Modern

69

Mountain

12

New Orleans

Northwest

70

Prairie

17

Ranch

61

Rustic

14

Shingle

2

Southern

41

Southern Traditional

6

Southwest

2

Spanish

Traditional

235

Tudor

7

Tuscan

Vacation

8

Victorian

1

Number of Vehicles

1

14

2

197

3

13

4

199

5+

7

Garage Type

Attached

629

Detached

11

Carport

5

Driveunder

53

RV Garage

3

None

315

Garage Location

Front

365

Side

34

Rear

26

Courtyard

3

Bedroom and Bath Options

Bedrooms - Clustered

252

Bedrooms - Split

76

Master Suite - 1st Floor

325

Master Suite - 2nd Floor

275

Master Suite - Lower Level

8

Master Suite - Sitting Area

10

Two Master Suites

17

In-Law Suite

14

Jack & Jill Bath

27

Kitchen and Dining

Breakfast Nook

81

Two Kitchen Islands

Butler Walk-in Pantry

87

Butlery

Formal Dining

32

Laundry Location

Laundry Access from Master Suite

11

Laundry - Upstairs

155

Laundry - Lower Level

18

Laundry - Main Level

252

Laundry Chute

1

Additional Rooms

Bonus Room

29

Den

26

Flex Room

35

Game/Rec Room

17

Home Office

66

Home Theater

7

Keeping Room

1

Library/Study

21

Loft

63

Media Room

2

Mudroom

131

Playroom

1

Safe Room

1

Sport Court

Sunroom

5

Two Story Great Room

34

Wet Bar

7

Wine Room

Outdoor Features

Wrap Around Porch

11

Outdoor Fireplace

1

Outdoor Kitchen

Courtyard

5

Stacked Porches

2

Foundation

Basement

308

Combo Basement-Crawl

Combo Slab-Crawl

Crawl

436

Daylight

69

Joist

Monolithic Slab

14

Pier

1

Piling

Post/Beam

2

Post Frame

Post/Pier

Raise Island

Slab

449

Stem Wall

13

Walkout

173

Special Features

Casita

Elevator

3

Handicapped Accessible

6

Multiple Stairs

2

Split Level

6

More Special Features

Exterior Walls

Block / CMU (main floor)

6

2x4

272

2x6

541

2x8

ICF

2x4 and 2x6

Log

1

Metal

2

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51

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25

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6

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20

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14

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50

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2

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4

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1

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104

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2

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Home Office Studio

Large

273

Materials List

533

Metric

65

Multi-Generational

7

On Sale

Pool House

Post-Frame

Recently Sold

242

Shed

Timber Frame

USDA Approved

8

Lot Features

Narrow Lot

230

Front/Up Sloping

12

Rear Sloping

7

Side Sloping

1

Sloping Lot

35

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