Building a new home in Ballarat: the stages that matter on cold, wet ground

New houses in Ballarat go up mostly on the western and southern edges, in Lucas, Alfredton, Delacombe, Winter Valley and Bonshaw. A build here runs through a long, damp winter, so moisture management under the slab and inside the frame carries more weight than it does on the plains near Melbourne. Each stage closes over the last, which is why the inspection has to land before the next trade does.

Where the new streets are

The Ballarat West Growth Area Plan, approved in 2010, set aside land for about 14,000 homes across Lucas, Alfredton and Delacombe, with the edge pushing on toward Bonshaw, Smythes Creek and Cardigan. Most volume builders working the region have display homes or open contracts in these estates.

Winter on a building site

Ballarat averages about 690mm of rain a year with August the wettest month, and overnight lows near freezing are routine. Frames get wet and stay wet, trenches hold water and slabs are poured into cold ground. None of that is a defect by itself, but it raises the cost of anything left open or unsealed.

The slab and its vapour barrier

Under the slab, the vapour barrier is the only thing standing between wet ground and the floor. On a nearby Maddingley job we recorded the barrier stopping short of the edge beams. That item cannot be seen again once concrete is placed.

Frame and roof loads

At frame stage we look at how roof loads come down. One recent frame had trusses bearing on internal walls that were never designed to carry them, and another had bottom plates sitting more than 10mm past the slab edge. Both are simple to correct while the frame is bare.

Insulation before plaster

In climate zone 7 the energy rules lean heavily on insulation. Our lock-up visit confirms wall and ceiling batts, and the wall between garage and house, are in before the plasterer arrives, because after that nobody checks.

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Written by our local inspection team from work carried out in Ballarat. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.

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Building a new home in Ballarat: common questions

Which stage inspections matter most on a Ballarat build?

Slab, frame and lock-up carry the items that are hardest to reach later: the vapour barrier and steel cover, frame fixings and truss support, then wrap and insulation. Pre-handover then covers the finish and completion items.

Does the cold weather change what you check?

It changes what we weight. Gaps in wrap, missing insulation and an incomplete vapour barrier cost more to live with in a cool, damp climate, so we look harder at them.

Can I book an inspection if my builder has its own quality checks?

Yes. Under a Victorian domestic building contract you can have an independent inspector attend at each stage. Give the builder notice and arrange site access through the supervisor.

Is the building surveyor's inspection the same thing?

No. The building surveyor carries out the mandatory inspections tied to your building permit. Ours is an itemised report for you, measured against the NCC, the relevant standards and the Guide to Standards and Tolerances 2015.

What site class will my Ballarat lot be?

It depends on the soil report for your lot. Classes vary across the city, from basalt plateau ground in the west to old alluvial and worked ground elsewhere, so check your engineering rather than a suburb average.