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Finding & funding

Budget advice

How to build a realistic cost plan and avoid the most common budget overruns.

Why budgeting matters

Budgeting can make or break a self build project. The more accurate your estimates, and the more honestly you account for every cost category, the better your chances of completing your home without crippling overspends.

Many people focus on the headline build cost and underestimate the surrounding costs: professional fees, planning contributions, site connection charges, temporary accommodation, and VAT on services. A robust budget includes all of these from day one.

Self build costs fall into three broad categories: land, professional fees and planning, and construction. Your budget should cover all three — plus a contingency, before you commit to buying a plot.

Build cost estimates: what to expectFree downloadWant the complete picture?Download the official 2026 NaCSBA Consumer Guide — covering everything from finding a plot to getting on site. Free to registered users.Download free guide →Register free · No card required Build…

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