---
title: "Structural Renovation Costs in Australia: Removing Walls & Extensions"
description: "Understand the costs associated with structural renovations in Australia. From removing load-bearing walls to underpinning, get accurate 2026 price estimates."
source: HowMuchReno
sourceUrl: https://howmuchreno.com/guides/structural-renovation-costs
lastUpdated: 2026-07-02
citationUrl: https://howmuchreno.com/guides/structural-renovation-costs
---

# Structural Renovation Costs in Australia: Removing Walls & Extensions

Understand the costs associated with structural renovations in Australia. From removing load-bearing walls to underpinning, get accurate 2026 price estimates.

Understand the costs associated with structural renovations in Australia. From removing load-bearing walls to underpinning, get accurate 2026 price estimates.

TL;DR: Structural renovations, such as removing load-bearing walls or underpinning foundations, generally cost between $5,000 and $25,000+. These projects require engineering, council permits, and specialized contractors.

How much do structural renovations cost in Australia in 2026?

Undertaking structural renovations in Australia, such as open-plan conversions or extensions, introduces significant costs, typically ranging from $5,000 for minor wall removals to over $50,000 for major alterations. These modifications are strictly regulated to ensure safety, requiring oversight from professionals aligned with the Housing Industry Association (HIA).

To give you a clearer picture, here is a realistic breakdown of the core expenses involved. Keep in mind that every site is unique, and material choices can vary drastically.

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## Key Points

- Wall Removal: $3,000 to $10,000 for removing load-bearing walls and installing beams.
- Engineering: Expect to pay $1,500 to $3,500 for a structural engineer’s assessment and plans.
- Underpinning: Fixing foundation issues can cost $10,000 to $30,000 depending on severity.
- Considering the overall budget impact? See our cost per square metre guide.
- For standard updates without structural changes, check our cosmetic renovation guide.
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*Source: [HowMuchReno](https://howmuchreno.com/guides/structural-renovation-costs)*