Start with the whole picture, not only the building. A realistic budget covers the plan and approvals, site preparation, the structure, roofing, finishes, plumbing and electrical, and external works such as the gate, wall and drainage.
Next, decide the floor area and the finish level. These two choices drive most of the cost. A larger house with basic finishes can cost less than a smaller one with premium fittings.
Add a contingency of about five percent for price changes and surprises on site. Ground conditions such as black cotton soil or a high water table can add cost to the foundation.
Finally, split the budget by construction stage so you know how much cash you need and when. Our free cost calculator gives you a planning estimate with a payment schedule you can adjust.
