Duplex House Plans - Architectural Designs

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Duplex House Plans

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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 - 42773DB:Modern Farmhouse Duplex House Plan with Three Bedrooms and Two-Car Garages

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42773DB

Plan Number

starting at

$2,080

3,636

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

4

Cars

Modern Farmhouse duplex house plan exterior with white vertical siding, gables, metal roofs over porches, and dual garage doors.

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623049DJ

Plan Number

starting at

$1,998

2,928

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

House plan exterior featuring a Modern Farmhouse style with a two-car garage, gables, and a covered porch. Board and batten siding.

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51923HZ

Plan Number

starting at

$1,445

2,496

Sq. Ft.

6

Bed

4

Bath

1

Story

2

Cars

House plan exterior. Two-story with gabled roof, two-car garage, and multiple window dormers.

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52355WM

Plan Number

starting at

$1,225

3,134

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

Modern Farmhouse style house plan exterior with vertical siding, gables, wood doors, and prominent rooflines.

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Exclusive

100324GHR

Plan Number

starting at

$1,845

2,286

Sq. Ft.

6

Bed

4

Bath

1

Story

House plan exterior. Two-story Modern Farmhouse with board and batten siding, gabled roof, and black-framed windows.

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Exclusive

48628FM

Plan Number

starting at

$1,485

2,794

Sq. Ft.

6

Bed

4

Bath

2

Story

House plan exterior featuring a two-story farmhouse style with a gabled roof, a two-car garage, and decorative gable brackets.

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62360DJ

Plan Number

starting at

$1,998

3,232

Sq. Ft.

6

Bed

4

Bath

1

Story

4

Cars

Tour

House plan exterior rendering. Modern Farmhouse style with a front porch, gabled roof, and dark window and door trim.

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Exclusive

100305GHR

Plan Number

starting at

$1,845

2,092

Sq. Ft.

6

Bed

4

Bath

1

Story

Modern two-story house plan exterior with dark brick base, white vertical siding, and asymmetrical gables.

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Exclusive

100300GHR

Plan Number

starting at

$1,695

1,900

Sq. Ft.

4

Bed

4.5+

Bath

2

Story

Plan image - 51393MM:Charming Country Style Multi-Family House Plan with Private Porches

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51393MM

Plan Number

starting at

$1,200

1,200

Sq. Ft.

2 - 4

Bed

2

Bath

1

Story

2

Cars

House plan exterior. Two-story, Modern style duplex with metal roof. Features include garage doors, entry doors, and covered porch areas.

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135281GRA

Plan Number

starting at

$1,450

3,130

Sq. Ft.

6

Bed

5

Bath

2

Story

2

Cars

House plan exterior with two units, Modern Farmhouse style. Features include gabled roof, garage doors, and front entry with windows.

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51959HZ

Plan Number

starting at

$1,445

2,196

Sq. Ft.

4

Bed

4

Bath

1

Story

2

Cars

House plan exterior. Two-story home with Craftsman style. Features include gabled roof, two-car garage, and a front porch.

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52367WM

Plan Number

starting at

$1,225

3,230

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

House plan exterior. Two story Modern Farmhouse style with gabled rooflines, entry awnings, wood shutters, and board and batten siding.

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Exclusive

100303GHR

Plan Number

starting at

$1,845

2,212

Sq. Ft.

6

Bed

4

Bath

1

Story

House plan exterior. Two-story with gable roof, front porch with columns, and symmetrical facade with shuttered windows.

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51242MM

Plan Number

starting at

$1,300

1,890

Sq. Ft.

4

Bed

2.5+

Bath

2

Story

House plan exterior. Two-story Modern Farmhouse style with a gable roof, board and batten siding, and recessed entry with sidelights.

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Exclusive

100310GHR

Plan Number

starting at

$1,695

1,777

Sq. Ft.

4

Bed

4

Bath

1

Story

Tour

House plan exterior. One-story Ranch style with gable roof and porch with columns. Brick facade with dark-framed windows and doors.

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51914HZ

Plan Number

starting at

$1,395

1,994

Sq. Ft.

4

Bed

4

Bath

1

Story

House plan exterior. Two-story house with gabled roof, horizontal siding, and multiple double-hung windows. A small front porch covers the entry door.

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67838MG

Plan Number

starting at

$1,595

2,000

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

Tour

Modern Farmhouse house plan exterior with two stories, gabled rooflines, dark metal roof, and garage. Features wood garage doors.

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623204DJ

Plan Number

starting at

$2,098

3,422

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

House plan exterior. Modern farmhouse style with two stories, gabled rooflines, dark garage doors, and black framed windows.

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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

House plan exterior. Two-story Modern Farmhouse with gabled roof, small porch overhangs, and a central upper window in the gable.

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52375WM

Plan Number

starting at

$1,195

790

Sq. Ft.

2

Bed

2

Bath

1

Story

Tour

Modern Farmhouse exterior with dark vertical siding, metal roofs, dual garages, and gabled dormers.

Hide

623179DJ

Plan Number

starting at

$2,198

4,354

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

House plan exterior showing a one-story Modern Farmhouse with a gabled roof, covered porch, and black-framed windows and doors.

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Exclusive

420163WNT

Plan Number

starting at

$1,745

1,504

Sq. Ft.

4

Bed

2

Bath

1

Story

House plan exterior. Two-story Modern Farmhouse with board and batten siding, gables, and a shed-roof porch. Black trim frames windows and doors.

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Exclusive

85338MS

Plan Number

starting at

$2,290

2,694

Sq. Ft.

6

Bed

4

Bath

2

Story

1
2
3
4
5
...
26
27
28

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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Search for a keyword

Total Heated Area (Sq. Ft.)

Bedrooms

Bathrooms

Plan Type

Single-Family Homes

6

Stand-Alone Garages

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

672

Other (sheds, pool houses, offices)

1

Footprint

Width (feet)

Depth (feet)

Height (feet)

Floors

Styles

Modern Farmhouse

46

Scandinavian

6

Craftsman

104

Barndominium

6

Transitional

22

Contemporary

122

Country

120

Mid Century Modern

20

New American

85

Cottage

29

More Styles

A-Frame

Acadian

Adobe

Beach

4

Bungalow

Cabin

2

Cape Cod

Carriage

Coastal

5

Coastal Contemporary

1

Colonial

3

European

20

Farmhouse

33

Florida-Style

4

French Country

6

Georgian

Hill Country

3

Log Cabin

1

Louisiana-Style

Low Country

1

Mediterranean

1

Modern

88

Mountain

15

New Orleans

1

Northwest

73

Prairie

17

Ranch

81

Rustic

12

Shingle

1

Southern

43

Southern Traditional

7

Southwest

Spanish

Traditional

297

Tudor

7

Tuscan

Vacation

7

Victorian

1

Number of Vehicles

1

15

2

225

3

14

4

207

5+

8

Garage Type

Standard

Attached

727

Detached

11

Carport

8

Driveunder

59

RV Garage

3

None

425

Garage Location

Front

406

Side

30

Rear

32

Courtyard

1

Bedroom and Bath Options

Bedrooms - Clustered

272

Bedrooms - Split

139

Master Suite - 1st Floor

368

Master Suite - Upstairs

321

Master Suite - Lower Level

7

Master Suite - Sitting Area

9

Two Master Suites

16

In-Law Suite

16

Jack & Jill Bath

28

Bunk Room

Kitchen and Dining

Breakfast Nook

115

Two Kitchen Islands

Walk-in Pantry

107

Butlery

Formal Dining

35

Laundry Location

Laundry Access from Master Suite

15

Laundry - Main Level

325

Laundry - Upstairs

186

Laundry - Lower Level

20

Laundry Chute

1

Additional Rooms

Optionally Finished Bonus Room

22

Den

28

Flex Room

38

Game/Rec Room

17

Home Office

75

Home Theater

7

Keeping Room

2

Library/Study

24

Loft

75

Media Room

2

Mudroom

161

Playroom

1

Safe Room

1

Sport Court

Sunroom

6

Two Story Great Room

37

Wet Bar

7

Wine Room

Outdoor Features

Wraparound Porch

14

Outdoor Fireplace

1

Outdoor Kitchen

Rooftop Deck

3

Courtyard

5

Stacked Porches

2

Foundation

Basement

360

Combo Basement-Crawl

Combo Slab-Crawl

Crawl

508

Daylight

68

Joist

Monolithic Slab

27

Pier

1

Piling

Post/Beam

3

Post Frame

Post/Pier

Raise Island

Slab

517

Stem Wall

19

Walkout

188

Special Features

Accessible Design

3

Casita

Elevator

3

Finished Bonus Room

6

Multiple Stairs

1

Split Level

6

More Special Features

Exterior Walls

Block / CMU (main floor)

5

2x4

320

2x6

633

2x8

ICF

2x4 and 2x6

Log

Metal

2

Collections

New Arrivals

23

Exclusive

61

Interactive Tours

39

Customer Photos

6

House Plan Videos

15

Photo Gallery

48

ADU

2

Closed Floor Plans

8

Lake House Plans

2

Luxury

1

More Collections

100 Most Popular

Attached Apartments

8

Builder Bundles

Canadian House Plans

107

Dogtrot House Plans

Home Office Studio

Large

287

Materials List

598

Metric

65

Multi-Generational

9

On Sale

Pool House

Post-Frame

Premium Collection

1

Recently Sold

283

Shed

Timber Frame

Unlimited Build License

212

USDA Approved

7

Lot Features

Narrow Lot

280

Front/Up Sloping

14

Rear Sloping

10

Side Sloping

1

Sloping Lot

36

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