Free 6 Bedroom Duplex House Plan – Modern Dual Living Design 376DU

If you are considering building a duplex for extended family, dual living, investment or rental income, our latest Ask the Builder Free House Plan is worth a closer look.
The 376DU Modern Duplex House Plan provides two complete three-bedroom homes within one well-planned building. With a total construction area of approximately 335.8 m² / 3,615 sq ft, each residence offers the space and features normally associated with a comfortable family home.
Best of all, you can download the concept design free and use it to start planning your project.
Ask the Builder – Why Consider a Duplex?
A well-designed duplex can provide considerably more flexibility than a conventional single home.
You might build one side for yourself and the other for family, create independent accommodation for parents or adult children, or investigate the property as a dual-rental investment.
The important part is making sure each residence functions properly as its own home.
That was the thinking behind Design 376DU. Rather than squeezing two small residences onto the site, the plan gives each unit its own bedrooms, bathrooms, kitchen, living area, outdoor space and double garage.
376DU Duplex House Plan at a Glance
The complete duplex includes:
6 Bedrooms – 3 per unit
4 Bathrooms – 2 per unit
4-Car Garage – double garage per unit
Separate private entrances
Kitchen and meals area to each residence
Spacious lounge areas
Main bedrooms with ensuite and walk-in robe
Built-in robes to secondary bedrooms
Separate laundry and linen storage
Enclosed alfresco / entertainment area to each unit
Private porch entrances
Modern Australian duplex design
Total Building Area
Total Construction Area: approximately 335.8 m² / 3,615 sq ft
Each residence is approximately 167.9 m² / 1,807 sq ft, including its living area, garage, enclosed alfresco and porch.
This gives both sides of the duplex a substantial amount of usable space.
Designed for Everyday Family Living
One of the strengths of this duplex floor plan is the separation between the private and everyday living areas.
Each unit includes three bedrooms, with the main bedroom enjoying its own ensuite and walk-in robe. Bedrooms 2 and 3 have built-in robes and access to the main bathroom.
The central kitchen and meals area connects naturally with the lounge, while the enclosed alfresco provides additional entertaining or recreation space.
Each residence also receives a double garage, an important feature for families and potentially attractive for future resale or rental use.
Could This Duplex Work for Extended Families?
Yes. This style of duplex could be particularly useful where two households want to live close together while maintaining their independence.
For example, one residence might be occupied by parents and the other by an adult child and their family.
Unlike a small secondary dwelling or granny flat, both sides have the facilities of a complete three-bedroom home.
Of course, whether a duplex can be built on a particular property depends on the site, zoning, planning requirements and local building regulations.
Download the Free Duplex Concept Plan
Our Ask the Builder Free House Plan series is designed to give you more than a picture of a house.
The downloadable Design 376DU pack helps you explore the floor plan, understand the main building areas and consider whether the design could work for your project.
The free design can also be useful when discussing your ideas with builders or obtaining early-stage pricing.
Important – This Is a Concept House Plan
The free 376DU design is a concept/preliminary house plan and is not permit-ready construction documentation.
Before construction, the design needs to be reviewed for your individual property and developed to meet the relevant local planning requirements, building regulations and site conditions.
Depending on your location and project, you may also require site-specific engineering, surveying, energy assessments, approvals and other professional services.
Need Full Construction Plans?
If you decide the 376DU is suitable for your project, the concept can be developed further into a Full Construction Plan Set.
Construction documentation can include detailed floor plans, elevations, building sections, door and window schedules, electrical layouts, building notes and other documentation appropriate to the project.
This allows you to start with an existing duplex concept rather than paying to design everything from scratch.
Want to Change the Design?
You can also use the 376DU as the starting point for a custom duplex design.
Perhaps you want larger bedrooms, a different kitchen, additional storage, changes to the garages, another facade style or modifications to better suit your block.
Simply send us your notes, a marked-up copy of the floor plan or even a hand-drawn sketch. We can review your ideas and provide a quotation for the required design work.
Are You a Building Supplier?
Our free house-plan downloads are also creating opportunities for businesses that want to reach people during the early stages of planning a new home.
We welcome enquiries from relevant building-product suppliers, manufacturers and construction service providers interested in advertising within selected free design packs and building-related content.
Advertising enquiries can be sent to admin@australianfloorplans.com.
Start Planning Your Duplex
Design 376DU offers a practical starting point for anyone considering a substantial modern duplex with two independent three-bedroom family homes.
Download the free concept design, study the layout, discuss it with your builder and decide what you would change before investing in the next stage of documentation.
Australian Floor Plans – Plans for a Better Life





Comments