What a renovation or extension actually costs.

Real numbers from a licensed builder — before you speak to a single quote. No sales pitch.

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The real cost ranges for a renovation or extension in 2026 — by project and by room.

The hidden costs only old homes have — restumping, rewiring, damp, asbestos — with the figures to budget for them.

How to read a quote like a builder — spot the low number that blows out, and what to check before you sign.

A worked budget example so you can see where every dollar of a real renovation goes.