Site measure & inspection: What happens before you build

Before you can begin your dream home extension, there’s one vital step that sets everything in motion: the site measurement and inspection. It’s the behind-the-scenes process that ensures your design is accurate, your budget is realistic, and your extension journey starts on solid ground.

In this blog, we’ll explain what happens during a site measure and inspection, why it’s so important, and how it helps bring your home extension plans to life. Additionally, you can follow the process as it unfolds in our visual site inspection guide.

What happens after the design agreement?

Once the design agreement is signed, Supa Group begins preparing for the next stage—the site measure and inspection. This is one of the most important steps in our pre-construction process. Our design and construction teams review your concept plans and property details to ensure everything is achievable and compliant. This step bridges your ideas with the technical requirements, setting the stage for the next phase of your home extension.

What is a site measure?

A site measure is a detailed on-site visit where Supa Group’s experienced team captures the exact dimensions and features of your home and land. We measure boundaries, elevations, and existing structures to ensure your new design fits perfectly with your home. Our team also checks important details such as property access, building permits, service connections, nearby trees, and local planning or zoning requirements.

This process ensures your extension meets all National Construction Code (NCC) standards and Standards Australia guidelines so your build complies with industry regulations.

Why site measures are important before building or extending

A site measure is the foundation of a well-planned extension project. It gives you confidence in every decision that follows and ensures your vision is built on precision, not guesswork.

• Ensures your extension integrates seamlessly with your existing home by aligning structural and aesthetic elements early in the process.
• Identifies potential challenges such as limited access, drainage concerns, or uneven terrain so they can be addressed before construction begins.
• Provides accurate and verified data for design and engineering, reducing the chance of design revisions or costly rework.
• Allows Supa Group to provide a fixed price and clear project timeline, giving you certainty and control over your investment.
• Guarantees your project meets Australian Building Codes Board mandatory inspections and local council standards, preventing compliance issues later on.
• Minimises costly surprises during construction by clarifying every site detail upfront.
• Builds a strong foundation for efficient planning, smoother approvals, and a stress-free building experience.

What's included in a Supa Group site measure?

[table]
[thead]
[tr][th]Aspect[/th][th]What’s Assessed[/th][th]Purpose[/th][/tr]
[/thead]
[tbody]
[tr][td]Measurements[/td][td]Walls, windows, doors, rooflines[/td][td]To create precise working drawings[/td][/tr]
[tr][td]Site levels[/td][td]Terrain height and gradients[/td][td]To ensure correct drainage and foundation design[/td][/tr]
[tr][td]Access points[/td][td]Entry and delivery paths[/td][td]To plan material and equipment movement[/td][/tr]
[tr][td]Services[/td][td]Electricity, water, and gas lines[/td][td]To avoid disruption during construction[/td][/tr]
[tr][td]Environmental factors[/td][td]Trees, shading, and drainage[/td][td]To design a sustainable and practical extension[/td][/tr]
[/tbody]
[/table]

This level of detail helps Supa Group deliver accurate 3D designs and a smoother building experience from day one.

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How site inspections help identify hidden issues early

Every home and block of land is unique. During the inspection, Supa Group’s experts look beyond the obvious to spot hidden issues such as drainage problems, weak soil, or structural limitations. Finding these early means we can refine your design or engineering plan before construction starts. This careful approach saves time, prevents setbacks, and keeps your project moving forward with confidence.

What happens if problems are found during inspection

If any challenges are discovered during your site inspection, Supa Group follows a clear step-by-step process to keep your project moving forward efficiently.

1. Identify and assess the issue – Our team carefully investigates the problem and records all relevant details to determine how it could affect your extension.
2. Discuss findings with you – We’ll explain what we’ve found in plain language so you understand what’s happening and why.
3. Develop practical solutions – Our design and engineering experts propose the best options to resolve the issue while maintaining your project goals.
4. Update plans and costs transparently – Any adjustments are clearly outlined so you can make informed decisions before work continues.
5. Confirm next steps – Once you’re satisfied, we move forward with an updated plan that ensures your extension stays on track.

Pro tip: Early identification and open communication prevent delays, minimise risk, and ensure your build stays within scope and budget.

How long does the site measurement process take before contract signing?

The site measure and inspection process usually takes one to two weeks, depending on the size and complexity of your property. During this time, Supa Group collects all the necessary information to finalise your design, confirm engineering details, and prepare your documentation for contract signing. Once complete, you can move forward knowing your plans are accurate and ready for construction.

How the site measure helps avoid cost blowouts and delays

A well-executed site measure helps prevent unexpected expenses and delays later in the project. Here are the key ways it adds value to your home extension:

• Identifies potential site challenges early so they can be resolved before construction begins
• Provides accurate measurements and data, leading to reliable project pricing
• Reduces the likelihood of costly design changes or on-site variations
• Ensures your plans comply with engineering and council requirements, avoiding approval setbacks
• Streamlines communication between design, engineering, and construction teams
• Keeps your build on schedule and within budget by addressing risks upfront
• Gives you confidence that your project is based on real conditions rather than assumptions

Supa Group's transparent pre-contract process

Transparency is one of the cornerstones of Supa Group’s approach. Our home extension process keeps you informed at every step, from your initial consultation to the final inspection. We’ll help you decide whether a ground-floor extension or second-storey extension best suits your property.

With open communication and expert guidance, you’ll always know exactly where your project stands.

Why Supa Group's site measurement process is different

Supa Group has been extending Melbourne homes since 1974, combining design expertise with trusted construction experience. Our integrated design-and-build model means one team manages every stage, from your first site inspection to the final handover. We provide fixed pricing, guaranteed timelines, and personalised designs that bring your vision to life.

Our team’s experience, precision, and commitment to transparency set us apart. When you’re ready to explore your home styles and floor plans, or learn more about our proven process, get in touch. Supa Group’s site measure is more than a technical step. It’s the foundation for creating a home that grows with you and your family for years to come.

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Meet with our extension specialists to discuss your vision and explore what’s possible for your home.

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