underpinning hiring tips queensland

How to Choose an Underpinning Contractor in Queensland

A practical guide to finding and vetting underpinning contractors in Queensland. What to look for, what to ask, and red flags to avoid.

· Queensland Underpinning Directory

Choosing the right underpinning contractor is one of the most important decisions you’ll make as a homeowner. Foundation work is structural, expensive, and difficult to undo if done poorly. Here’s how to find a qualified professional you can trust.

Step 1: Verify Their QBCC Licence

In Queensland, any building work valued over $3,300 must be carried out by a contractor with a current Queensland Building and Construction Commission (QBCC) licence.

How to check:

  • Ask for their licence number upfront
  • Verify it on the QBCC online licence search
  • Confirm their licence covers structural or underpinning work specifically

A contractor who can’t provide a valid licence number should be an immediate disqualification.

Step 2: Check Their Insurance

Your contractor should carry:

  • Public liability insurance — Protects you if the work causes damage to your property or a third party
  • Workers’ compensation insurance — Required if they have employees

Ask for certificates of currency (not just policy numbers) and verify the coverage amounts are adequate for your project.

Step 3: Get Multiple Written Quotes

Get at least two — ideally three — detailed written quotes. A good quote should include:

  • A clear description of the problem identified
  • The proposed underpinning method
  • Materials to be used (type, grade, quantity)
  • Timeline for completion
  • Total cost, broken down by labour, materials, and any other charges
  • Payment terms
  • Warranty details

Comparing Quotes

The cheapest quote isn’t always the best value. Compare:

  • Scope of work — Is the same amount of work being quoted?
  • Materials — Are they using equivalent materials?
  • Inclusions — Does the quote cover waste removal, council fees, and site cleanup?
  • Warranty — What’s covered, and for how long?

Step 4: Ask the Right Questions

Before committing, ask your shortlisted contractors:

  1. How long have you been doing underpinning work in Queensland? — Experience with local soil conditions matters
  2. Can you provide references from recent jobs? — Follow up and actually call them
  3. What underpinning method do you recommend, and why? — A good contractor explains their reasoning
  4. Will you handle the building permit application? — They should, since underpinning requires a permit in Queensland
  5. What happens if you find unexpected problems during the work? — Understand how variations are handled
  6. Do you provide a structural engineer’s report? — For significant work, this is essential

Step 5: Check Reviews and References

  • Look for Google reviews and check the overall pattern, not just individual comments
  • Ask the contractor for 2–3 references from recent local jobs
  • Check if they’re listed in professional directories

Red Flags to Watch For

Be cautious of contractors who:

  • Pressure you to sign immediately — Legitimate contractors give you time to consider
  • Ask for large upfront deposits — In Queensland, QBCC limits deposits to 10% of the contract price
  • Can’t explain the method they’ll use — Competent contractors communicate clearly
  • Won’t provide a written quote — Verbal agreements offer no protection
  • Significantly undercut other quotes — If one quote is 40% cheaper, ask why
  • Have no online presence or reviews — Not necessarily a dealbreaker, but worth noting

Understanding Your Contract

Before signing, ensure your contract includes:

  • Start and estimated completion dates
  • Total price and payment schedule
  • Detailed scope of work
  • Variation process (how changes are handled and approved)
  • Warranty terms
  • Dispute resolution process

Under Queensland law, domestic building contracts over $3,300 must be in writing and include specific terms as prescribed by the QBCC.

After the Work

Once the underpinning is complete:

  • Request a compliance certificate or final inspection report
  • Take photographs of the completed work for your records
  • Keep all documentation — you’ll need it for insurance claims or future property sales
  • Monitor the repaired area over the following months for any signs of further movement

Find a Specialist

Ready to start looking? Browse our directory of verified underpinning specialists across Queensland. Every listed contractor has been reviewed for relevance and service coverage.

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