Duplex House Plans - Architectural Designs

Loading...

Start Your Journey

Find Your Plan

Customize Your Plan

Estimate Your Costs

Support

Professional Partners

Menu

Favorites

All Plans

Cart

Help

Home
/
House Plans
/
Collections
/
Duplex House Plans

679 plans

Trending

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...

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

Hide

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.

Hide

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.

Hide

52355WM

Plan Number

starting at

$1,225

3,134

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

2

Cars

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

Hide

42773DB

Plan Number

starting at

$2,080

3,636

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

4

Cars

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

Hide

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.

Hide

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.

Hide

62360DJ

Plan Number

starting at

$1,998

3,232

Sq. Ft.

6

Bed

4

Bath

1

Story

4

Cars

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

Hide

Exclusive

100300GHR

Plan Number

starting at

$1,695

1,900

Sq. Ft.

4

Bed

4.5+

Bath

2

Story

Tour

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

Hide

Exclusive

100305GHR

Plan Number

starting at

$1,845

2,092

Sq. Ft.

6

Bed

4

Bath

1

Story

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

Hide

135281GRA

Plan Number

starting at

$1,450

3,130

Sq. Ft.

6

Bed

5

Bath

2

Story

2

Cars

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

Hide

67838MG

Plan Number

starting at

$1,595

2,000

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

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

Hide

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.

Hide

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.

Hide

Exclusive

100303GHR

Plan Number

starting at

$1,845

2,212

Sq. Ft.

6

Bed

4

Bath

1

Story

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

Hide

Exclusive

100310GHR

Plan Number

starting at

$1,695

1,777

Sq. Ft.

4

Bed

4

Bath

1

Story

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

Hide

51242MM

Plan Number

starting at

$1,300

1,890

Sq. Ft.

4

Bed

2.5+

Bath

2

Story

Tour

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

Hide

51914HZ

Plan Number

starting at

$1,395

1,994

Sq. Ft.

4

Bed

4

Bath

1

Story

Tour

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

Hide

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.

Hide

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.

Hide

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.

Hide

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.

Hide

Exclusive

85338MS

Plan Number

starting at

$2,290

2,694

Sq. Ft.

6

Bed

4

Bath

2

Story

House plan exterior featuring a modern style, two stories, balcony, glass garage doors, and a central chimney.

Hide

666218RAF

Plan Number

starting at

$1,944

3,608

Sq. Ft.

6

Bed

4.5+

Bath

2

Story

4

Cars

1
2
3
4
5
...
27
28
29

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.

Filter

Clear All

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)

679

Other (sheds, pool houses, offices)

1

Footprint

Width (feet)

Depth (feet)

Height (feet)

Floors

Styles

Modern Farmhouse

47

Scandinavian

6

Craftsman

105

Barndominium

6

Transitional

22

Contemporary

125

Country

121

Mid Century Modern

20

New American

86

Cottage

28

More Styles

A-Frame

Acadian

Adobe

Beach

4

Bungalow

Cabin

2

Cape Cod

Carriage

Coastal

5

Coastal Contemporary

1

Colonial

3

European

20

Farmhouse

34

Florida-Style

4

French Country

6

Georgian

Hill Country

3

Log Cabin

1

Louisiana-Style

Low Country

1

Mediterranean

1

Modern

90

Mountain

15

New Orleans

1

Northwest

73

Prairie

17

Ranch

82

Rustic

12

Shingle

1

Southern

43

Southern Traditional

7

Southwest

Spanish

Traditional

299

Tudor

7

Tuscan

Vacation

7

Victorian

1

Number of Vehicles

1

15

2

227

3

14

4

209

5+

8

Garage Type

Standard

Attached

732

Detached

11

Carport

8

Driveunder

59

RV Garage

3

None

429

Garage Location

Front

410

Side

30

Rear

32

Courtyard

1

Bedroom and Bath Options

Bedrooms - Clustered

274

Bedrooms - Split

145

Master Suite - 1st Floor

370

Master Suite - Upstairs

326

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

112

Butlery

Formal Dining

35

Laundry Location

Laundry Access from Master Suite

15

Laundry - Main Level

330

Laundry - Upstairs

187

Laundry - Lower Level

20

Laundry Chute

1

Additional Rooms

Optionally Finished Bonus Room

22

Den

28

Flex Room

39

Game/Rec Room

17

Home Office

76

Home Theater

7

Keeping Room

2

Library/Study

25

Loft

77

Media Room

2

Mudroom

165

Playroom

1

Safe Room

1

Sport Court

Sunroom

6

Two Story Great Room

37

Wet Bar

7

Wine Room

Outdoor Features

Wraparound Porch

13

Outdoor Fireplace

1

Outdoor Kitchen

Rooftop Deck

3

Courtyard

5

Stacked Porches

2

Foundation

Basement

362

Combo Basement-Crawl

Combo Slab-Crawl

Crawl

515

Daylight

68

Joist

Monolithic Slab

31

Pier

1

Piling

Post/Beam

3

Post Frame

Post/Pier

Raise Island

Slab

518

Stem Wall

21

Walkout

189

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)

6

2x4

326

2x6

638

2x8

ICF

2x4 and 2x6

Log

Metal

2

Collections

New Arrivals

30

Exclusive

62

Interactive Tours

40

Customer Photos

6

House Plan Videos

15

Photo Gallery

48

ADU

1

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

291

Materials List

599

Metric

65

Multi-Generational

9

On Sale

Pool House

Post-Frame

Premium Collection

1

Recently Sold

285

Shed

Timber Frame

Unlimited Build License

335

USDA Approved

7

Lot Features

Narrow Lot

283

Front/Up Sloping

14

Rear Sloping

10

Side Sloping

1

Sloping Lot

36

Sign Up for Our Newsletter

Stay up to date with the latest house plan trends, receive exclusive promos, and find out about the most popular plans!

By providing your email, you are agreeing to receive email communication from Architectural Designs about promotions, sales, and other announcements. You can unsubscribe at any time.

Questions about orders, plans, or anything else.

Privacy Policy Terms & Conditions Copyright

All house plans are copyright ©2026 by the architects and designers. All other content copyright ©2026 Architectural Designs.