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Major Renovations

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We transform your house into the home you’ve always wanted while preserving its character. Modern comfort and functionality that respects your home’s heritage charm.
The ZJ Building team members.
[Renovations that transform how you live]
Unlike builders who treat renovations as fill-in work, we specialise in transforming Adelaide’s character homes. Our multi-award-winning team creates more room for family gatherings, modern kitchens perfect for entertaining, and year-round comfort throughout your home, all while preserving its unique heritage charm. With more than 100 successful renovations completed and multiple HIA awards, our proven process delivers exceptional results with fixed pricing and clear timelines, so you can fall back in love with your home again.
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[Your renovation vision]

Live better in the comfortable and functional home you deserve

Like most people thinking about a renovation, you’ve probably been dreaming about what you want. Every renovation we create unlocks your home’s potential while preserving its character, transforming how you live without forcing you to compromise on style or comfort.

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Complete budget confidence with genuine fixed pricing based on detailed planning, so you can enjoy the transformation without financial stress or surprises.
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Full transparency with daily updates and clear communication, keeping you informed about your home’s progress every step of the way.
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Modern comfort and convenience seamlessly blended with your home’s original character, creating the perfect balance of heritage charm and contemporary living.
The ZJ Building team members.
[Common concerns we help solve]
Worried about costs blowing out
You want certainty, not surprises. We provide genuine fixed pricing based on detailed planning, so you can confidently budget without fear of unexpected costs once work begins.
Concerned about losing your home’s character
Your home’s charm matters as much as modern comfort. We specialise in preserving heritage character while seamlessly integrating contemporary conveniences and improved functionality.
Nervous about being kept in the dark
Renovating should be exciting, not stressful. We provide daily updates and clear, realistic timelines, so you always know exactly what’s happening and when it will be finished.
Unsure about which builder to trust
Your home deserves care and expertise. We treat every renovation with respect and professionalism, improving comfort and efficiency without compromising character or blowing your budget.
[Our Approach]

Transforming houses into homes you’ve always wanted

Unlike most builders who treat renovations as fill-in work, we’ve spent the past 10 years specialising in transforming Adelaide’s character homes. With more than 100 successful renovations completed and multiple HIA awards, our proven process ensures you get exactly what you want while actually enjoying the journey.

Specialist renovation expertise
Open Accordion

We love the challenge of renovations, providing thoughtful solutions to complex problems while preserving your home's character and adding modern comfort and functionality.

Your own project manager
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We limit each project manager to just 5 projects at a time, ensuring you get the focused attention you deserve with immediate answers to questions.

Fixed price guarantee
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We fully assess your site and provide a comprehensive fixed-price quote based on detailed understanding of your unique home, eliminating unexpected costs or variations.

In-house carpentry team
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When unexpected challenges arise in renovations, our dedicated carpentry team can solve them immediately, keeping your project on track without expensive delays.

ABC collaborative process
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Our architect, builder, client process brings everyone together from the beginning to co-create a home that's beautiful, functional and buildable within your budget.

A building experience you actually enjoy
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Renovation should be an exciting journey to your dream home, not a source of stress. We provide complete confidence through fixed pricing, daily updates and dedicated project management support.

Daily progress updates
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Through your personal online portal, you'll see daily photos and progress reports, so you can watch your dream home take shape day by day.

Quality control systems
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Our detailed quality assurance process, with checks at every critical stage, ensures superior workmanship throughout every aspect of your renovation to the highest standard.

Family business values
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As a family business who've experienced our own renovation challenges, we understand what's at stake and treat your home with the same care we would our own.

Book your free design consultation
[The PathWay]

Your clear path to a home transformation you’ve been dreaming of

Taking on a major renovation can feel daunting when you’ve heard stories about cost blowouts and endless delays. That’s why we developed our unique ABC collaborative process, bringing architect, builder and client together from day one. This streamlined, systems-led approach brings certainty and peace of mind to even the most complex renovations, creating your dream home while preserving everything you love about its character.

Step 1: Your Design Consultation
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Whether you're dreaming of connecting living areas for perfect entertaining flow, adding a butler's pantry to your kitchen, or transforming your home for modern comfort, we'll explore all possibilities together. Using our ABC collaborative process, we bring architect, builder and client together from the beginning to create a detailed plan that maximises your home's potential while preserving its unique charm, complete with a fixed-price proposal so you know exactly what to expect.

Step 2: A More Predictable, Well-Managed Build
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Experience the confidence of having master craftsmen transform your home with respect for its heritage. Your dedicated project manager (handling just 5 projects at a time) keeps you updated daily through your online portal, while our in-house carpentry team ensures every detail is executed perfectly, from matching period features to creating modern comfort. Your renovation progresses smoothly and efficiently, finishing on time and within budget.

Step 3: Your Finished Home
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Welcome to your beautifully renovated home that looks and works exactly as you've always wanted, without losing any of its unique character. As Victoria Spangler discovered: "They took our tired old house and turned it into a stunning home, giving us everything we wanted – their workmanship, professionalism and attention to detail was second to none."

Our full process
The ZJ Building team members.
The ZJ Building team members.
[Our iron-clad Guarantees]

Six ways we protect your investment

Sadly, many builders shy away from making guarantees. But we’re proud to stand behind our work. And offer ongoing support to our wonderful clients. Here are six ways you can be sure you’ll get exactly what you want, delivered exactly how we promise.

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1.
Fixed price promise
Your price is fixed and final, based on detailed planning not rough estimates. This means you can confidently plan your budget without fear of unexpected costs or variations.
2.
Communication guarantee
You’ll receive daily updates through your online portal and responses to any questions within 2 business days. No more wondering what’s happening with your renovation or chasing builders for answers.
3.
Quality craftsmanship
Only licensed, professional trades who meet our strict standards work on your home. Plus, our in-house carpentry team ensures superior workmanship at every stage, giving you a custom home that stands the test of time.
4.
Professional development commitment
We constantly refine our processes and stay updated with the latest building innovations. This means your custom home benefits from current best practices in both design and construction.
5.
Ongoing support promise
Our relationship doesn’t end at handover. We stay in touch to ensure you’re completely satisfied, including a 3-month follow-up to address any settling issues. Your home’s long-term performance matters to us.
6.
10-year structural warranty
Complete peace of mind with our decade-long structural warranty. We build for lasting quality, not just immediate satisfaction.
[Ready to start planning?]

Free expert advice to create the home you’ve always imagined

Like most Adelaide homeowners who contact us about major renovations, you probably have exciting ideas about transforming your home. Perhaps a reimagined floor plan for open-plan living, a dream kitchen with butler’s pantry, or modernising your entire home while preserving its character. Our free design consultation helps you explore what’s possible and develop a clear plan to bring your vision to life.

During our consultation we’ll…

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Assess your home’s potential and explore possibilities
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Share relevant examples from similar completed renovations
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Identify features adding most value to lifestyle
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Discuss realistic budgets and project timelines
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Help determine if you’re overcapitalising
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Answer questions about the renovation process

This is your chance to tap into our decades of renovation expertise and avoid costly mistakes while creating a home that helps your family feel good every day.

Book your free design consultation
The ZJ Building team members.
The ZJ Building team members.
[Your Free Guide]

Download our complete renovation planning & design guide

When you’re investing in your forever home, choosing the right builder matters more than anything else. Download our practical guide to avoid costly mistakes and find a builder you can trust.

Download
[Frequently Asked Questions]
How do I know if my home is suitable for a major renovation?
Open Accordion

Most Adelaide homes, especially character homes, have amazing potential just waiting to be unleashed. During our initial site meeting, we'll assess your home's structure, explore possibilities for better flow and functionality, and help you understand what's possible. As Greg and Lynne from Glenunga discovered: "Zak did an extraordinary job integrating all those special features – you wouldn't even know this was a renovated home."

How much does a major renovation cost?
Open Accordion

While every home is different, we help you maximise value by exploring options that align with your budget. Before any work begins, you'll get a detailed fixed-price quote, not a rough estimate that changes once work starts. We'll also help you prioritise features to ensure you get the elements that matter most to you. For more information on renovation pricing, check out our design guide with inspiration and case studies on real Adelaide renovations with pricing and square meter rates.

How long will my renovation take?
Open Accordion

Every renovation is different, and timelines can vary widely - from around 3 months for smaller projects to 12 months or more for larger, more complex builds. That’s why we take the time to walk you through what’s realistic for your specific scope.Before work begins, you’ll receive a detailed schedule outlining the expected stages of your renovation. And while occasional delays can happen (especially when dealing with older homes), your dedicated project manager - who oversees a maximum of 5 projects at a time - will keep things moving smoothly and keep you informed every step of the way.As Michelle from Norwood shared: "We had peace of mind knowing exactly what was happening and when."

Can I live in my home during the renovation?
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It’s not always possible but if it is, we will carefully explain the realities of living in through a renovation. One of our priorities as a builder is to provide you with a great experience and it becomes very difficult to do this if you’re constantly disrupted by noise, dust and are out of routine. The client builder relationship is paramount for a successful major home renovation, and if it is too risky from a safety or relational point of view, we will advise accordingly. It is for this reason that we always strongly advise you move out during the project

How do you preserve my home's character while modernising?
Open Accordion

We care about the rich history of Adelaide homes. We preserve character details because we are passionate about them. Also our in-house carpentry team specialises in matching original features, from brickwork to timber details. We believe in enhancing character, not erasing it. Just ask Doug from Prospect: "We now have a period home with modern living that has all the functionality we wanted."

What if unexpected issues arise during renovation?
Open Accordion

Our thorough planning and quoting process helps identify potential issues before work begins. But the reality of renovating is that surprises can occur and this can result in a variation to our agreed scope of work. In any case, our in-house carpentry team can address them immediately, keeping your project on track without expensive delays.

Does a fixed price contract mean that there are no variations?
Open Accordion

Variations are not a scary word, they are just mis-understood as they are associated with more cost to the client. The reality is that variations are any changes to the original agreement. This can be cost, time, start dates, finish dates or any terms, agreed finishes and scope of work that form part of the contract. It is important to understand what they are and how they work so you are not afraid of them. We build complex and difficult projects with major renovations. There are a lot of unknowns behind walls and under floors and although we spend a lot of time understanding your unique home and what challenges may come up during the project we have never completed a job without a variation. We have a detailed process for how we handle them and we always recommend a contingency to cover you for change of mind and unexpected issues during construction.

How do I stay informed about progress?
Open Accordion

Through your personal online portal, you'll see daily photos and updates. You can also message or comment on anything 24/7. Your dedicated project manager is also always available for questions and you will be able to contact him during normal business hours. As Victoria Spangler noted: "Their communication, workmanship, professionalism and attention to detail was second to none."

What kind of warranty do you provide?
Open Accordion

Beyond our 10-year structural warranty, we provide ongoing support to ensure you're completely satisfied. We even schedule a 3-month maintenance check to address any settling issues.