Duplex Builders in Melbourne
You want two well built homes on one block, designed with the same care you would expect from a single custom build. As duplex builders in Melbourne, Professional Residential designs and constructs both dwellings to suit your site, your council requirements, and the way you plan to live or invest.
Every duplex we deliver comes with a fixed price agreed upfront, a clear completion timeline, a dedicated project manager, and the backing of our long-standing building guarantee.
Duplex Designs We Build
Every duplex we build is drawn from scratch around your site rather than pulled from a fixed catalogue. That flexibility matters most on the narrow and irregular blocks common across Melbourne, where a considered design is the difference between two homes that feel generous and two that feel squeezed.
Single storey duplexes
suit downsizers and buyers who want easy, step free living, and they work well on wider blocks with room to spread out.
Double storey duplex designs
make the most of tighter inner suburban sites by building up rather than out, protecting garden space and giving each dwelling clear separation across levels.
Mirrored and independent layouts
are both on the table. You can build two matching homes for a clean, balanced streetscape, or design each side differently when one dwelling needs more bedrooms, a larger living zone, or accessible features.
Because we design and build, the plan you approve is the home you receive. If you want to walk through finished work before you commit, we can show you completed projects rather than a staged display.
What Building a Duplex With Us Looks Like
We keep the journey clear so you always know what is happening and what comes next.
In a free consultation we talk through why you are building and what you want from each dwelling, then assess the block and its council requirements.
Our architect and interior designer develop a scheme that balances light, privacy, and street presence across both sides, refining it until it reflects what you asked for.
Planning permits, building permits, and any subdivision requirements are managed on your behalf, so you are not chasing councils yourself.
Both are confirmed in writing before we break ground, so the project you sign for is the project you get.
Your project manager oversees every trade and quality checkpoint on both dwellings, you follow it all through the app, and each home is thoroughly inspected before handover.
Our Duplex Home Building Process
1. Free Consultation and Site Assessment
We discuss your vision, priorities, and budget. If you have a block, we assess site conditions and council requirements. If you’re still looking for land, we advise on what to consider before buying.
2. Design and Architecture
Our in-house architect and interior designer develop a concept around your brief, with the flexibility to refine until it reflects exactly what you want.
3. Council Permits and Approvals
We manage all planning permits and building permits across Melbourne councils, including heritage overlays and complex zoning requirements.
4. Fixed Price Contract
You receive a fully itemised fixed price quote and a guaranteed completion date in writing before construction begins.
5. Construction and Handover
Your dedicated project manager oversees every trade, timeline, and quality checkpoint. Thorough inspections are completed before handover. Your 20-year building guarantee applies from day one.
Where We Build
- Brighton
- Beaumaris
- Parkdale
- Edithvale
- South Yarra
- Ivanhoe
- Rosanna
- Montmorency
- Cheltenham
- We also take on builds along the Mornington Peninsula and in regional Victoria, including alpine locations such as Mt. Buller.
Common Questions About Building a Duplex
What is the difference between a duplex and a dual occupancy development?
A duplex is a specific type of dual occupancy where two dwellings sit on one block and usually share a common wall. Dual occupancy is the broader planning term and can also include two fully detached homes. If you are weighing up detached options, our dual occupancy builders can talk you through the alternatives.
Does my block need to be subdivided to build a duplex?
Not always. A duplex can be built and held on a single title, or the block can be subdivided so each dwelling has its own title. What suits you depends on whether you plan to keep, lease, or sell the homes, and we help you decide before design begins.
Can each side of the duplex be designed differently?
Yes. The two dwellings can mirror each other for a balanced streetscape, or each side can be designed on its own terms with a different layout, bedroom count, or set of features. Because we design from scratch, both homes are shaped around how they will actually be used.
Can a duplex be built as a double storey on a narrow block?
In most cases, yes. Building up rather than out is often the smartest way to fit two well proportioned homes on a tight inner suburban site while protecting garden and open space. During your site assessment we confirm what your block and council will allow.
Do I need a planning permit to build a duplex in Melbourne?
Most duplex projects require a planning permit, and the specifics depend on your zone and any overlays that apply to the site. We manage the planning and building permits for you as part of the build.
How do you protect privacy between the two homes?
Privacy is resolved at the design stage through the placement of windows, the layout of living zones, acoustic treatment to shared walls, and the position of outdoor areas. Planning both dwellings together lets us design out the overlooking issues that often appear when two homes are treated separately.
Ready to Build Two Homes on One Block?
Every duplex begins with a free, no obligation consultation where we assess your site, confirm what it can support, and give you a clear path forward with fixed pricing and a guaranteed completion date.