When you’re building a new home, there are a lot of moving parts. Even with careful planning, changes can happen after the contract is signed or once construction has begun. In the building industry, these changes are usually called variations.
For homeowners, variations can be one of the most misunderstood parts of the building process. Some are necessary, and some are avoidable. Most can affect your budget and your timeline.
If you’re planning a custom home in Busselton or the South West, it’s worth understanding what variations are, why they happen, and how to reduce them before your build gets underway.
What is a variation in a building project?
A variation is any change to the agreed scope of work after the contract has been signed.
In Western Australia, variations to a home building work contract generally must be in writing, dated, and signed by both parties before the variation work begins. That is why it is important to understand the cost and time implications before approving any change.
This could include changes to:
- the home design
- materials or finishes
- fixtures and fittings
- layout
- structural elements
- construction methods
- site works
- electrical or plumbing plans
Common examples of variations
Variations can happen for many different reasons. Some of the most common examples include:
- changing floor finishes after selections have been finalised
- moving walls, doors or windows
- upgrading kitchen appliances or cabinetry
- changing bathroom layouts or fittings
- adding extra power points, lighting or data points
- changing cladding, roofing or external finishes
- adjusting site works due to unforeseen ground conditions
Why do variations happen?
Variations are not always a sign that something has gone wrong. In many cases, they happen because homeowners refine their ideas. In other cases, they happen because something unexpected is discovered on site.
Here are some of the main reasons variations happen.
1. Changes in homeowner preferences
This is one of the most common causes. Sometimes a client sees the space taking shape and decides they want something different. For example, they may change their mind about finishes, ask for a larger island bench, or request design changes such as moving a wall.
2. Incomplete selections
If key fixtures, finishes or products have not been fully selected before the build begins, decisions may need to be made later. That can lead to changes in specifications, availability, or installation requirements.
3. Site conditions or unexpected issues
Sometimes the building site reveals conditions that were not fully visible during the planning stage. This might include soil conditions, drainage issues, levels, or access challenges that require adjustments to the original scope.
4. Product availability
A product may become unavailable or delayed. This can lead to a variation if an alternative product needs to be chosen, and it requires changes to installation, dimensions, or other materials.
How variations affect your building budget
The financial impact of a variation depends on the type of change, when it happens, and how many parts of the build it affects.
Direct cost changes
The most obvious impact is the direct difference in cost. For example, upgrading a benchtop may increase the overall cost because the new option is more expensive.
Labor and rework
Variations can also create additional labour costs. If a change is made after work has already been completed, it may involve removing, reordering, reinstalling, or revising work that is already underway.
Flow-on effects
A variation often affects more than one item. For example:
- moving plumbing fixtures may affect waterproofing and tiling
- changing lighting plans may affect electrical and ceiling works
Clients do not always realise the broader impact variations can have on the build. It is always best to consult your builder before making changes.
How variations affect your timeline
Variations do not just affect your budget. They can also have a significant impact on the construction schedule, depending on the complexity of the change and the trades involved.
Deciding takes time
If a variation is being considered, work may need to pause while the change is reviewed, priced, approved, and documented.
Material lead times
A new selection may have a longer lead time than the original item. This is especially relevant for custom products, imported items, specialist finishes, or non-standard fixtures.
Trade rescheduling
Building work happens in a sequence. If one element changes, it can affect the timing of multiple trades. A delay in one area may mean electricians, cabinet makers, tilers or painters need to be rescheduled.
How to reduce the risk of variations
While it may not be possible to avoid every change, there are practical ways to reduce the likelihood of unnecessary variations. It is best to finalise as many decisions as possible before construction begins.
Be clear on your priorities from the start
It helps to know what matters most to you:
- Do you want more storage?
- Is natural light a top priority?
- Are you planning to entertain?
- Do you want premium finishes in key areas only?
Allow enough time for selections
Rushed choices can lead to second-guessing. Giving yourself enough time to review options properly can prevent later changes.
Ask questions early
If you are unsure how something will look, function or feel, ask early. It is much easier to clarify details on paper than once the build is underway.
The key takeaway
The key is understanding the impact of a variation completely, before approving it. A good builder will explain how the change affects the project, so you can make an informed decision. Variations are a normal part of many building projects. Small changes can affect both your budget and your timeline, especially once construction is underway.
The best way to reduce variation risk is through thorough planning, clear documentation, timely selections, and open communication from the beginning. That is why it is important to work with an experienced custom home builder in Busselton who can help reduce variations from the start and, if they arise, minimise their impact on the building schedule and budget.
Contact us today to find out why Kidron should be your builder of choice in the South West.