The Home Inspection Checklist: What to Look for During Your Build
Building a custom home should feel exciting and reassuring, not confusing or stressful. Yet for many homeowners, uncertainty creeps in once construction begins. How do you know the work is being done properly? What should you be checking, and when?
A clear, stage-by-stage home inspection checklist helps remove guesswork. It gives you confidence that quality is being built in, not inspected in at the end. This guide walks through the key inspection points during a residential build in South Australia, highlighting what matters most at each stage and why.
This article is designed to support homeowners, but it also reflects how high-performing builders operate, using documented systems, checks, and accountability throughout the build.
Why Ongoing Inspections Matter During a Build
A common misconception is that quality can be confirmed at handover. In reality, many of the most important elements of a home are concealed long before the final walkthrough. Slabs, framing, waterproofing, and services all sit behind finishes.
That is why proactive inspections during construction are critical. They reduce risk, prevent costly rework, and ensure your home performs as intended for decades, not just at move-in.
Stage-by-Stage Home Inspection Checklist
1. Slab and Foundation Stage
The slab and footings form the structural base of your home. In South Australia, reactive clay soils are common, which makes correct site preparation and engineering essential.
What to check:
• Site preparation: The site should be properly cleared, levelled, and excavated in line with the engineering drawings. Footing excavation depths typically range between 500mm and 800mm, depending on soil classification and design requirements.
• Footings and formwork: Confirm that footings are positioned and sized exactly as per the engineering plans. A typical concrete slab is usually 100mm to 120mm thick, with formwork set square and stable before pouring.
• Reinforcement steel: Reinforcing mesh and bars should be laid accurately and securely, supported on chairs so the steel sits at the correct height within the slab. Bar spacing is commonly set in a grid of approximately 200mm to 300mm. Poor reinforcement placement can compromise long-term structural performance.
This stage is one of the most difficult to rectify later, which is why disciplined builders rely on documented pre-pour checks and sign-offs.
2. Frame Stage
The frame is the structural skeleton of your home. Errors here can affect everything from wall straightness to door operation and roof performance.
What to check:
• Wall and roof framing: Walls should be straight and plumb, with studs spaced consistently, most commonly at 450mm or 600mm centres. Connections between wall frames, roof trusses, and tie-downs should be secure and installed as designed.
• Window and door openings: Openings must match the architectural drawings exactly. Lintels above windows and doors should be correctly sized to carry loads above, particularly in wide openings.
• Plumbing and electrical rough-ins: All pipes and wiring should be installed in their correct locations before walls are enclosed. Electrical cables are typically secured at intervals of no more than 1.2 metres and separated appropriately from plumbing services.
This stage benefits greatly from independent checks, as once linings are installed, visibility is lost.
3. Lock-up Stage
Lock-up is reached once the external envelope is complete, including walls, roof, windows, and external doors. The home is now protected from weather.
What to check:
• External walls and cladding: Brickwork, render, or other cladding systems should be consistent, straight, and securely fixed. Look for cracks, irregular joint spacing, or poor alignment.
• Roofing: Roof tiles or metal sheeting should be properly aligned, fixed, and sealed. Check for cracked tiles, loose sheets, and correct installation of flashings, gutters, and downpipes.
• Windows and doors: All external openings should be properly sealed and flashed to prevent water ingress. Windows and doors should operate smoothly, with gaps around frames filled using appropriate sealants or foam.
This stage plays a major role in energy efficiency, weather protection, and long-term durability.
4. Plasterboard Stage
At this point, internal walls and ceilings are sheeted, and the home begins to take shape visually.
What to check:
• Plasterboard fixing: Sheets should be securely fixed, with screw heads slightly recessed, not torn through the board. Screw spacing typically sits between 200mm and 300mm.
• Joins and corners: Internal and external corners should be straight and clean. All joins should be taped, with an initial coat of compound applied evenly.
• Service penetrations: Electrical boxes and plumbing penetrations should be neatly cut and correctly positioned, avoiding oversized or damaged openings.
Attention to detail here reduces cracking, shadow lines, and visible imperfections later.
5. Pre-Handover Inspection, Practical Completion
This is your final inspection before taking possession of the home. While most structural elements are now concealed, this stage focuses on finish quality and functionality.
What to check:
• Finishes and inclusions: Confirm all fixtures, fittings, and appliances align with your contract and selections. This includes cabinetry, tapware, flooring, appliances, and paint finishes.
• Functionality: Test taps, toilets, lights, switches, power points, and appliances. A simple plug-in tester can help confirm that electrical points are working correctly.
• Doors and windows: Open and close every door and window. They should operate smoothly, latch correctly, and seal properly. Gaps around door frames are typically around 3mm to 5mm.
• Minor defects: Note cosmetic issues such as small plaster cracks under 2mm, paint touch-ups, or gaps at skirtings. These are commonly addressed during the defects liability period. Record items in writing and include photos.
Understanding Warranties and Ongoing Protection
In South Australia, statutory warranties generally cover major structural defects for up to six years. However, relying solely on warranties often means issues are addressed after inconvenience, stress, and disruption.
The strongest outcomes come from builders who prioritise prevention through systems, documentation, and regular quality checks at every stage of the build.
Building With Confidence
A well-managed build is not about hoping things turn out well. It is about having the right processes in place to verify quality at every step.
Whether you are building your first home or your forever home, understanding what to look for during construction empowers you to ask better questions and partner with a builder who welcomes transparency.
Quality homes are not the result of chance. They are the result of disciplined systems, clear communication, and accountability from slab to handover.
If you would like some help with your build, book a consultation with our team to start shaping your vision. Contact us today!
For more helpful building tips, visit our other DBG Blogs or see www.youtube.com/@dornfordbuildinggroup.
