Introduction
Most of the expensive problems in a residential build are decided long before anyone pours concrete. They are decided when land is bought, when a design is drawn, and when a builder is appointed — and by the time they surface, the cheap moment to fix them has passed.
Buying land before understanding it is the most common. A block’s slope, soil classification, easements, overlays, flood mapping and access all shape what can be built and what it costs. A steeply falling site can add tens of thousands in retaining and earthworks. An easement through the middle of a lot can rule out the footprint you had in mind. None of this is visible in a listing photograph, and none of it is the selling agent’s job to raise.
The Most Common Mistakes
Designing before establishing a budget is the second. It is entirely possible to spend months and a significant fee developing a design that no builder will price within reach. Establishing a realistic construction budget first, informed by current rates rather than last year’s, keeps the design honest and saves the demoralising process of value-engineering a home you have already fallen for.
Underestimating the cost of site works follows closely. Buyers routinely budget for the house and forget the ground it sits on: excavation, retaining, stormwater, driveway, fencing, landscaping, service connections. On a difficult site these can rival the cost of the structure.
Planning Before You Build
Choosing a builder on price alone is the fourth. The lowest quote is often the least complete, and the gap gets recovered through variations once you are committed and moving is not an option.
Signing a contract without reading the payment schedule is the fifth. Progress payments should track completed work. When they run ahead of it, you carry the risk of a builder’s cash flow rather than your own.
Getting Independent Advice
Skipping independent review is the last and the one that compounds all the others. Architects design, builders build, and both are good at what they do — but neither is engaged to protect your commercial position across the whole project.
The pattern in all of these is the same: a decision made with incomplete information, at a point where better information was available and simply not sought. Careful preparation before you commit costs very little relative to a build, and it is the difference between a project that runs to plan and one that spends its contingency in the first three months.
Share this Blog:
