Hidden Costs in Queenslander Renos

Every Queenslander renovation budget has line items that weren’t in the original plan. Some are completely avoidable with better planning. Others are genuinely unpredictable. This guide covers the most common ones.

Asbestos removal

Pre-1990 Brisbane homes frequently contain asbestos in floor sheeting, wall linings, ceilings, external cladding, fascias and eaves. If your renovation involves disturbing any of these materials, you need a licensed asbestos assessor and removal contractor.

Asbestos removal is not optional. Working on or near asbestos-containing materials without appropriate precautions is illegal in Queensland.

Budget: $2,000-$15,000+ depending on extent. Get an asbestos assessment before finalising your budget.

Engineering variations

Your structural engineer provides a design at the start of the project. During construction, unexpected conditions often emerge: soil types different from the initial assessment, existing structural issues discovered when walls are opened or certifier requirements that go beyond the original specification.

Engineering variations are billed at hourly rates and can add $2,000-$8,000 to a project without much warning.

On the Coorparoo project, a slab variation added $2,200 when the shale went deeper than expected in one corner of the footprint and the engineer specified additional reinforcing beyond the original specification.

Electrical upgrades

Old Queenslanders often have wiring that doesn’t meet current standards. When you’re doing a major renovation that involves an electrician, you’re likely to discover (or be required to address) ageing switchboards, non-compliant wiring, lack of safety switches or inadequate earthing.

On the Coorparoo project, the opportunity to bring the upstairs wiring up to current standards while the electrician was already on site added approximately $5,000. It was the right call: doing it separately later would have cost more.

Budget: $3,000-$10,000 for electrical upgrades on an older home if the wiring hasn’t been touched recently.

Services disconnection and reconnection

Before a Queenslander is raised, services (water, gas, electrical, NBN) must be disconnected. After the house is lowered onto its permanent subfloor, they must be reconnected. Each disconnection/reconnection requires a licensed contractor.

This is often not included in raise contractor quotes and can cost $2,000-$5,000.

Termite treatment

If your Queenslander has existing termite damage or activity, treatment and structural repair can add significantly to the project. Even without active termites, a physical termite barrier is required around the slab perimeter: which is a separate cost from the slab contractor.

Budget: $2,000-$5,000 for a physical termite barrier. If active termite damage is found, budget separately for treatment and structural repair.

Council fees and professional fees

Development approval fees, building approval fees, certifier inspection fees, engineering fees and the QBCC owner-builder permit fee all add up. These are often underestimated or omitted from early budgets.

On the Coorparoo project, permits and professional fees totalled $14,820 - including DA ($4,200), building approval ($3,800), certifier inspections ($3,600), the owner-builder permit ($420) and engineering variations ($2,800).

Window lead times and repricing

Windows have long lead times: 10-20 weeks from order is common. If you price windows early (which you should) and don’t lock in the quote with a firm order, the price may increase by the time you’re ready to order.

On the Coorparoo project, one window supplier repriced before the order was placed. Lock in quotes with a written order as early as your building approval allows.

Contingency

None of the above items are unusual. They happen on almost every project. Budget a minimum 15% contingency on your total project estimate: and accept that you may need some of it.

On a $331,510 build-under, 15% contingency is approximately $50,000. That’s not padding: it’s the buffer between a project that stays on track and one that stalls.