How to Choose a Remedial Builder in Brisbane: 9 Questions to Ask

Remedial building is diagnosis-led construction on occupied buildings, and it rewards a different skill set from new build: investigation before pricing, staged access, materials science, and the discipline to fix causes rather than symptoms. Brisbane has excellent remedial builders and it has general contractors who quote remedial work the way they quote a fitout. These nine questions separate them before the contract is signed, not after the patches fail.

1. What QBCC licence do you hold, and in whose name?

Building work in Queensland above the regulatory threshold requires the contracting entity to hold the appropriate QBCC licence class. Check the licence on the QBCC register: the entity name should match the quote, the class should cover the work being offered, and the history is worth a look while you are there. A subcontractor's licence does not cover the head contractor.

2. What remedial projects like ours have you completed?

Ask for projects matching your defect type and building type: concrete repair on a 1970s carpark is not facade recladding, and a body corporate balcony programme is not an industrial roof. Then actually contact a referee or two, with three questions: did the diagnosis hold up, did the price hold up, and did the defects return?

3. How will you diagnose the cause before pricing the repair?

This is the question that exposes patch merchants. A genuine remedial builder will talk about investigation: tap surveys, cover meter readings, carbonation and chloride testing for concrete remediation, moisture mapping and water testing for leaks. A quote produced from the footpath, priced per square metre of visible damage, is pricing the symptom; the cause and the hidden extent come later as variations.

4. Which standards will the repair comply with?

The answer should come easily: AS 3600 for the concrete structure, the EN 1504 series for repair materials and methods, AS 4654 for membrane waterproofing, AS 1562.1 for metal roofing, manufacturer specifications for proprietary systems. A builder who cannot name the governing standards cannot demonstrate the repair complies with them, and compliance is what your engineer, your insurer and the next buyer will ask about.

5. Who provides the engineering?

Structural repairs need an engineer in the loop: to specify breakout limits, assess reinforcement section loss, design strengthening where needed, and sign off the completed work. Ask whether the builder works with an independent RPEQ engineer, who that is, and at what hold points they inspect. An engineering signature on the methodology protects the owner; its absence transfers that risk to you.

6. How will you manage access and occupants?

Remedial work happens on buildings full of people. The builder should speak fluently about exclusion zones, overhead protection, noise windows for breakout work, dust and containment, notifications to tenants, and access methods (scaffold, swing stage, rope access, EWP) with the trade-offs priced. The cheapest access option is not always the cheapest project; a builder who has only ever priced scaffold may be adding weeks of hire your building does not need.

7. Exactly what does the warranty cover?

Get the layers in writing: statutory rights under the QBCC scheme, the builder's workmanship warranty (period and what voids it), and the manufacturer's product warranties, which on coating and membrane systems often require certified applicators and documented preparation. The question that matters: if this same defect returns in year three, who attends, and who pays?

8. What insurances are current?

Public liability appropriate to commercial work, contract works cover for the project, and workers compensation for the crews. Ask for certificates of currency naming the contracting entity, and check the dates. On strata projects, the body corporate's insurer may have its own requirements; finding that out at contract stage is free.

9. How will quantities be handled when the breakout reveals more?

Honest remedial contracts deal openly with uncertainty: investigated scope priced as lump sum, concealed quantities (extra spalling found at breakout, substrate decay under membranes) handled through schedule-of-rates items agreed up front, with photographic records at each hold point. A builder who promises a fixed price for unknowable quantities has either loaded the price heavily or planned the variation fight in advance. The fair structure protects both sides, and how a builder answers this question tells you how the project will feel in month two.

Using the answers

Score the responses rather than collecting them. A builder who answers seven of nine fluently but has no engineer relationship is fine for non-structural work and wrong for spalling repairs. One who answers everything except the quantities question is telling you how variations will go. And a builder who answers all nine in writing without being chased is showing you their paperwork culture, which is the same culture that will produce your QA records, your warranty file and your defect-free handover. Committees comparing three quotes on price alone are comparing three different scopes wearing the same number; the nine answers are what make the quotes comparable at all.

Red flags worth walking away from

• Pricing visible damage only, with no investigation or testing allowance
• Render-and-paint solutions for rust staining and cracking, treating building repairs as cosmetics
• No named engineer for structural work
• Pressure to sign before scaffold prices expire
• Vagueness about licence class, insurances or referees

More questions owners commonly ask about engaging contractors are covered in our FAQ.

Allied Commercial delivers investigated, engineered remedial building across Brisbane, and will answer all nine questions in writing. To put us to the test on your building, get in touch.