Building a custom home is an exciting yet challenging journey that requires careful planning, time, and attention to detail. One of the most common questions homeowners in Melbourne ask is, How long does it take to build a custom home? The answer depends on several factors, which we’ll break down in this guide to help you understand the timeline and avoid potential delays.
What is the average time to build a custom home?
Understanding the average time to build a house
The average time to build a custom home typically ranges from 12 to 18 months, but this can vary depending on various elements like design complexity, location, and contractor availability. In general, a straightforward custom home without extensive custom features or major site challenges will lean towards the 12-month mark, while larger or more intricate projects can take closer to 18 months.
Factors that affect the average time
Several factors can influence how long it takes to build a custom home. These include:
- Design complexity: More complex and bespoke designs with unique features or architectural elements may require more time to execute.
- Size of the home: Larger homes naturally take longer to build due to the sheer scale of construction and materials needed.
- Weather conditions: Melbourne’s ever-changing weather can sometimes delay construction, particularly in winter when adverse conditions can halt work.
- Availability of tradespeople and materials: A shortage of skilled labour or specific materials can also extend the timeline.
How long does it take to build a house?
While the range of 12 to 18 months is typical, it’s important to remember that this timeframe can be adjusted based on your project’s unique requirements. Factors such as the type of home (single-storey versus multi-storey) and the specific location of your property will impact the overall duration.
What factors can delay the custom home build timeline?
Building a custom home is rarely a completely smooth process, and certain issues can arise that extend the construction timeline. Below are some key factors that could cause delays.

Permits and approvals affecting construction time
Before construction can even begin, obtaining the necessary council approval for planning and building is a crucial step that can generally take time. In Melbourne, this process can take several weeks or even months, depending on the complexity of your build and whether your design complies with local zoning laws. Ensuring that your design meets all local planning guidelines is essential to avoid delays during this stage.
Complexity of your home design and its impact
The more customisation you want in your home, the longer it will likely take to build. Complex architectural features, unique building materials, and high-end finishes all require additional time. For instance, custom joinery or imported tiles may take longer to source and install, impacting your timeline.
Construction materials and their availability
Availability of construction materials is another factor that can cause delays, especially if you’re using specialised or non-standard items. Delays in material delivery or shortages, which have been more common in recent years, can push back construction progress. It’s advisable to discuss potential supply chain issues with your builder to stay informed and plan accordingly.
What is the construction process like for a custom home?

Building a custom home is a step-by-step process, and understanding the various stages of construction can help you manage your expectations.
Stages of the building process explained
- Pre-construction planning: This includes finalising your design, securing permits, and preparing the site.
- Foundation and slab work: The foundation is laid, whether it’s a concrete slab, raised floor, or other system.
- Framing and roofing: The skeleton of the house is built, followed by the installation of the roof structure.
- Plumbing, electrical, and insulation: Essential systems such as plumbing, wiring, and insulation are installed.
- Interior and exterior finishes: This includes the installation of drywall, flooring, cabinetry, and painting.
- Final inspection and handover: Once construction is complete, a final inspection is conducted before handing over the keys.
What to expect during the framing and roofing phases
The framing phase typically takes several weeks, as the structure of the house is erected. This is where you’ll start to see the house take shape. After framing, the roofing phase follows, which involves laying down the roof structure and ensuring it’s watertight. These phases are often the most visible and dramatic steps in the building process.
Plumbing and electrical work timelines
Plumbing and electrical work can take a significant amount of time due to the complexity of these systems. The installation of pipes, wiring, and fittings may take several weeks, depending on the size of the home and the design of the systems. These tasks need to be done before walls are fully closed up, which is why they typically occur after framing.
How can homeowners help expedite the custom home construction time?
While many factors are out of a homeowner’s control, there are several ways you can help streamline the process and reduce delays.
Choosing the right custom home builder
Selecting a reputable, experienced builder is one of the most important decisions you can make. A skilled builder will have the knowledge, resources, and network to keep your project on track. They can also help anticipate challenges before they arise and proactively manage delays. Get in touch with Karja Builders today to discuss how we can bring your custom home vision to life.
Staying organised during the building process
Staying organised with your planning and documentation will reduce unnecessary delays. This means staying on top of design approvals, material selections, and any changes or additions you wish to make during the build. The more efficient you are in making decisions, the smoother the process will be.
Effective communication with contractors
Open and consistent communication with your builder and contractors is essential. Ensure you have regular updates, address any concerns quickly, and discuss potential issues before they become bigger problems. Miscommunications can cause costly delays, so establishing a clear line of communication is key.
What are common frequently asked questions about building a custom home?
How long does it typically take to build a new custom home?
As previously mentioned, the typical timeline is around 12 to 18 months, depending on design, size, and various external factors like weather and material availability.

What can cause a custom home to take longer than expected?
Several factors can extend the timeline, including delays in permit approvals, unexpected weather conditions, material shortages, and complications during construction such as foundation issues or design changes mid-build.
What are the costs associated with building a home from scratch?
The cost of building a custom home can vary greatly depending on location, size, materials, and design complexity. In Melbourne, the average cost of building a custom home ranges from $3,000 to $4,500 per square metre, but this can fluctuate. It’s important to set a realistic budget and discuss this with both your architect and builder early on to avoid unexpected costs later in the process. For a deeper understanding of the costs involved, check out Understanding the Costs of Building a Luxury Home in Melbourne.
Building a custom home in Melbourne is a thrilling endeavour that, with the right preparation and expectations, can lead to the creation of your dream home. By understanding the key factors that affect the timeline, anticipating potential delays, and keeping the lines of communication open with your architect and builder, you can help ensure the process is as smooth as possible.