It is one of the first questions most homeowners ask when considering a major renovation, extension or second storey addition:
How long will it take?
It is also one of the hardest questions to answer responsibly.
Not because builders are trying to avoid the question, but because renovation timelines are influenced by many factors including approvals, engineering, access, structural complexity, the level of specification, materials, selections, trade coordination and the unknowns that can come with working on an existing home.
A simple answer may sound reassuring. A realistic answer is far more valuable.
At Addstyle, we believe homeowners deserve clear and considered guidance from the beginning, not optimistic timeframes designed to secure a project, only to create frustration later.
Home extension and renovation completed by Addstyle in Leederville
Why homeowners become anxious about timeframes
Renovating is disruptive. For many families, it affects routines, finances, work, children, pets, storage, temporary accommodation and the emotional comfort of home itself.
So it is completely understandable that homeowners want certainty around timing.
Most people are not simply asking, “How many weeks will construction take?” They are really asking:
How long will our lives feel disrupted?
When can we plan around this?
Can we trust the builder to manage the process properly?
Will this become stressful and drawn out?
These are reasonable concerns.
The challenge is that a renovation or extension is very different from building a new home on a vacant block. There are more variables, more approvals and more moving parts. There is also a significant amount of pre construction work that many homeowners understandably do not see.
Construction time is only one part of the overall timeline
When homeowners think about timeframes, they often focus only on the construction phase.
In reality, a great deal of work happens before construction even begins.
This may include:
- Design development
- Site measure and survey work
- Engineering
- Planning approvals
- Development Applications
- Advertising periods where required
- Energy assessments
- Selections and pre start
- Documentation
- Building permits
- Ordering materials with long lead times
At Addstyle, the design phase alone may take approximately six to eight weeks depending on the complexity of the project and the level of design development involved.
Approvals are often the biggest variable.
In some cases approvals may take only a few weeks. In others they may take four to six months, particularly where Development Applications, advertising requirements, engineering or additional consultant input are involved.
This is one of the least understood aspects of renovating.
The building industry is currently navigating a significant amount of regulation and administrative complexity. While these processes exist for good reason, they can also create delays and uncertainty that sit outside both the homeowner’s and builder’s direct control.
This is particularly relevant in many of Perth’s older established suburbs including Floreat, Nedlands, Claremont, South Perth, Mt Lawley, Fremantle and East Fremantle, where renovation projects often involve older homes, planning considerations, restricted access, heritage influences or more complex approval pathways. These types of projects require careful planning, realistic scheduling and an experienced renovation team that understands the nuances of working within established residential areas.
This can be frustrating for everyone involved.
Indicative construction timeframes
Every project is different, but as a very broad indication:
An internal renovation may take approximately 12 to 14 weeks or more once construction starts.
A home extension may take approximately 16 to 20 weeks or more, depending on size, access, specification and complexity.
A standard second storey addition could take anywhere from five months to up to ten months in construction. It really depends on the size of the addition, the external detailing involved, whether the home includes cladding or brickwork, the level of internal finish, access to the site and the complexity of the structure. The variables are many.
Character home renovations also vary considerably because the scope can range from sympathetic restoration work to major structural alteration, extension, second storey additions or, as with many of our projects, all of these elements combined within a whole home transformation.
These figures should be treated as general guidance, not a promise. The true timeframe depends on the nature of your home, the design, approvals, site conditions, specifications and decisions made along the way.
Why renovations are different from new builds
Second storey addition in Mount Hawthorn during construction.
New homes are generally built on prepared sites using predictable construction methods and standardised sequencing.
Renovations are fundamentally different.
Before a renovation builder can move forward, they often need to work backwards first. Existing kitchens, bathrooms, ceilings, flooring, roofing or structural elements may need to be carefully removed before new work can begin. During that process, hidden issues are sometimes uncovered, particularly in older homes.
A renovation builder is not simply constructing something new on a vacant block. They are integrating new work into an existing home while navigating structural limitations, uneven surfaces, previous renovations, ageing materials, heritage considerations and restricted access.
The goal is not simply to build new areas. It is to create a finished home that feels cohesive, resolved and seamless, as though it has always belonged together.
That requires experience, careful planning and a high level of coordination.
What commonly causes delays?
Approvals and red tape
Approvals are often the single biggest source of delay and uncertainty.
Depending on the project, approvals may involve surveys, planning requirements, Development Applications, advertising periods, engineering, energy assessments, CDC requirements and building permits.
Some parts of this process sit outside the direct control of the builder or homeowner. A good builder can prepare thorough documentation, manage the process carefully and follow up diligently, but they cannot always control the speed or discretion of external authorities.
Client changes
One of the most common causes of delays during construction is client changes.
This is understandable. As homeowners see the project taking shape, ideas evolve and decisions become more tangible.
However, what appears to be a simple change can often have a much larger impact than expected.
A tapware selection, for example, may affect plumbing rough ins, ordering timeframes or wall set outs. A window change may affect engineering, energy ratings or framing details. A tile change may affect waterproofing schedules, layouts or trade sequencing.
This is why selections are completed early in the process and why pre construction planning is so important.
Material lead times and trade coordination
Bathroom renovation to home renovation by Addstyle in North Perth
Some fixtures, finishes and materials have long lead times, particularly if they are imported, custom made or highly specified.
Early selections allow orders to be placed in time and ensure documentation remains accurate.
Trade coordination also plays a major role in the quality and efficiency of a renovation.
At Addstyle, we do not sacrifice quality for haste.
Clients understandably want projects completed as quickly as possible. However, rushing a renovation is rarely in the homeowner’s best interests.
There are times where we may wait for a particular trade because we trust their workmanship, attention to detail and consistency. Tiling is a good example. The difference between excellent execution and poor execution is highly visible and permanent.
Yes, it may sometimes be possible to source another trade at short notice. But quality renovations rely on trusted teams, not simply whoever happens to be available immediately.
Our reputation has been built on delivering a consistently high standard of finish. That standard requires care, coordination and the right people.
Site conditions and access
Access can have a significant impact on renovation timeframes.
Working on a tight inner suburban block, a sloping site, a character home or a property with restricted access can affect deliveries, machinery, demolition, waste removal and construction sequencing.
The more complex the site, the more carefully the project must be planned.
What homeowners can control
While some aspects of the process sit outside a homeowner’s control, there are several ways clients can help projects run more efficiently.
Make selections early.
Avoid late changes where possible.
Respond promptly during design and documentation.
Understand that pre construction planning is not wasted time. It is what allows the construction phase to operate more smoothly.
Choose a builder with a proven renovation process, not simply the shortest estimated timeframe.
The more clarity achieved before construction begins, the more efficiently the project can move forward.
What experienced builders do differently
Experienced renovation builders do not simply promise speed.
They reduce risk.
They understand how to coordinate design, approvals, engineering, selections, scheduling and construction sequencing in a structured and methodical way.
At Addstyle, we have developed a tried and tested process over more than 35 years specialising in renovations, extensions and second storey additions.
Our goal is to move projects through pre construction as efficiently and thoroughly as possible so that construction can begin with clarity and proper planning.
That does not mean there will never be delays. Renovations involve variables by nature.
But experience, systems and careful planning reduce unnecessary disruption and help homeowners better understand the process from the beginning.
It is also important to understand that builders themselves have every reason to keep projects moving efficiently. Under a fixed price contract, delays and extended construction periods are not in the builder’s interests either, particularly in an environment where labour and material costs continue to rise.
Efficiency matters.
But efficiency is not the same as haste.
Why transparency matters more than unrealistic promises
It is easy to give clients the answer they want to hear.
It is harder, and ultimately more responsible, to explain the reality of the process honestly.
A short timeframe may sound appealing initially, but if it is unrealistic, it can create frustration and disappointment later.
At Addstyle, we prefer to provide considered guidance from the outset, explain the factors that may influence timing and communicate openly throughout the project.
Trust is not built through overpromising.
It is built through transparency, experience and consistent delivery.
How Addstyle approaches planning and communication
Addstyle has specialised in renovations, extensions and second storey additions for more than 35 years.
Over that time, we have refined a process designed to balance efficiency with careful planning and quality workmanship.
We coordinate design, approvals, engineering, selections and scheduling methodically so projects can progress as smoothly as possible.
We are selective about the trades we use because workmanship matters.
We are careful about documentation because accuracy matters.
We are realistic about timeframes because trust matters.
Our reputation, longevity and industry recognition have been built on delivering high quality renovations consistently, not rushing projects through at the expense of the final result.
For homeowners considering a renovation, extension or second storey addition, the question should not simply be:
“How fast can this be done?”
A better question is:
“How can this be planned and delivered properly, efficiently and with the least amount of unnecessary stress?”
That distinction matters.
Because the goal is not simply to finish construction.
The goal is to create a home that feels beautifully resolved, carefully built and worth the investment for many years to come.
Completed Home Extension by Addstyle in Wembley
Frequently Asked Questions About Renovation Timeframes
How long does a renovation take in Perth?
An internal renovation may take approximately 12 to 14 weeks or more during construction, depending on the complexity of the work, level of specification and site conditions. The overall process including design and approvals is usually considerably longer.
How long does a home extension take?
Home extensions commonly take approximately 16 to 20 weeks or more during construction. Factors such as approvals, engineering, access, selections and trade coordination can all influence the timeframe.
How long does a second storey addition take?
A second storey addition may take anywhere from five to ten months in construction depending on the size and complexity of the addition, the structural requirements, external finishes, access to the site and the level of internal specification.
Why do renovations take longer than new builds?
Renovations involve working with an existing home, which introduces many variables not present in new home construction. Existing structures often need to be carefully removed before new work can begin, and hidden issues can sometimes be uncovered during the process.
How long do approvals take for a renovation or extension?
Approvals vary considerably depending on the local authority and complexity of the project. In some cases approvals may take weeks. In others they may take several months, particularly where Development Applications, advertising periods or additional consultant documentation are required.
Can I live in my home during renovations?
This depends on the scale and nature of the renovation. Some homeowners remain in the property during portions of the work, while others choose temporary accommodation during major structural renovations, extensions or second storey additions.
Do client changes affect the timeframe?
Yes. Even relatively small changes can affect documentation, ordering, engineering, trade scheduling and construction sequencing. Finalising selections and decisions early helps projects progress more efficiently.
Why is choosing the right builder important for timeframes?
Experienced renovation builders have established systems, trusted trades, detailed planning processes and realistic scheduling practices that help reduce unnecessary delays and improve overall project coordination.
Considering a renovation, extension or second storey addition?
Addstyle offers a complimentary consultation for homeowners considering a major renovation, home extension or second storey addition in Perth.
As WA’s most awarded home renovation and extension company, we can help you better understand the process, the factors that influence timeframes and how to approach your project with greater clarity from the beginning.
