Underpinning Wollongong
Call (02) 9072 0403

Servicing Wollongong, NSW.

Call (02) 9072 0403
A single-storey brick house with a wide stair-step crack running down the wall between two windows, a level path and lawn edge in front — underpinning, Wollongong. Illustrative example.

Wollongong, NSW

Underpinning Wollongong

Wollongong homeowners ask about underpinning when a wall cracks or a floor moves. It is licensed building work in NSW: a contractor licence is needed once the labour and materials pass A$5,000, and the Home Building Regulation names "underpinning or piering" as its own trade category. An enquiry here goes to one independent provider, who inspects the house and quotes. We do no underpinning and set no price.

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  • Each enquiry goes to one independent provider for your part of Wollongong, not to a list of firms that all ring you.
  • We do not underpin houses. The provider inspects, then names the price.
  • Every call opens with a notice that it may be recorded.

Seven services

Underpinning services in Wollongong

Before you call anyone

Four facts that change the job

  • Licensed work above A$5,000 NSW makes underpinning or piering a licensed trade once the labour and materials pass A$5,000, and the Home Building Regulation gives it a category of its own. Get a licence number and the categories it covers before you compare quotes.
  • Water is the usual suspect CSIRO's footing guide names a leak, a blocked gutter, an overwatered garden bed, a downpipe that ends at the wall and tree roots among the causes of footing movement, and says that where a service failure is the cause the remedy is to repair it.
  • Not every crack is the footing CSIRO says most cracking in masonry walls is a cosmetic nuisance. Cracking from local shear or erosion is different: it usually keeps developing until its cause has been remedied.
  • A map is a start, not a finding The state's soil-landscape map for this area comes from a 1990 survey, and its reports describe each unit across a landscape. None is a finding about your lot: only an investigation of the site says what your footings sit on.

Three steps

From enquiry to quote

  1. Describe what you see Your suburb, the signs (a crack, a door out of square, a floor that has moved) and when you first noticed them.
  2. It is passed on Your enquiry goes to a single independent provider for your part of Wollongong. The provider pays for the introduction; you never do.
  3. A provider inspects and quotes The provider looks at the house, works out the cause and prices the job.

Underpinning across Wollongong

Wollongong's suburbs stand on more than one kind of ground. In our five-point read of the state's soil-landscape map, Thirroul returns the Illawarra Escarpment and Gwynneville units, Figtree returns four different units, Dapto mostly the Shellharbour unit, and Fairy Meadow the Gwynneville unit and the unit named after it. The state's reports for those units do not agree on reactivity: they call the Berkeley unit's soils highly reactive, the Fairy Meadow unit's generally stable, and the Gwynneville unit's stable to slightly reactive under a headline of reactive subsoils. The survey dates from 1990 and its scale is coarse, so it shows what to expect across an area. Only an investigation of your lot shows what is under your footings.

Where enquiries come from

Suburbs we cover

Enquiries reach this site from across the City of Wollongong. Four suburbs have a page of their own, each written around what a council instrument or the state's mapping records there: Thirroul, Figtree, Dapto and Fairy Meadow.

  • Wollongong
  • Thirroul
  • Stanwell Park
  • Figtree
  • Dapto
  • Fairy Meadow
  • Port Kembla
  • Woonona
  • Horsley
  • Berkeley
  • Bulli
  • Kanahooka
  • Helensburgh
  • Corrimal
  • Unanderra
  • Balgownie
  • Cordeaux Heights
  • Farmborough Heights
  • Koonawarra
  • Lake Heights
  • West Wollongong
  • Warrawong
  • Windang
  • Towradgi
  • Bellambi
  • Keiraville
  • Austinmer
  • Wombarra

Suburbs without a page, Stanwell Park, Port Kembla, Woonona and Corrimal among them, are covered on the same terms.

Service area map — Underpinning Wollongong Areas served: Thirroul, Stanwell Park, Figtree, Dapto, Fairy Meadow, Port Kembla, Woonona, Horsley, Berkeley, Bulli, Kanahooka, Helensburgh, Corrimal, Unanderra, Balgownie, Cordeaux Heights, Farmborough Heights, Koonawarra, Lake Heights, West Wollongong, Warrawong, Windang, Towradgi, Bellambi, Keiraville, Austinmer and Wombarra. Positions are approximate locations of each named area; the outline is indicative only and is not a boundary. Balgownie Keiraville West Wollongong Figtree Cordeaux Heights Farmborough Heights Unanderra Berkeley Lake Heights Horsley Kanahooka Dapto Koonawarra Windang Helensburgh Stanwell Park Wombarra Austinmer Thirroul Bulli Woonona Corrimal Bellambi Towradgi Fairy Meadow Port Kembla Warrawong
Areas served. Indicative positions — not a boundary, and not a location for this business.
  • Thirroul
  • Stanwell Park
  • Figtree
  • Dapto
  • Fairy Meadow
  • Port Kembla
  • Woonona
  • Horsley
  • Berkeley
  • Bulli
  • Kanahooka
  • Helensburgh
  • Corrimal
  • Unanderra
  • Balgownie
  • Cordeaux Heights
  • Farmborough Heights
  • Koonawarra
  • Lake Heights
  • West Wollongong
  • Warrawong
  • Windang
  • Towradgi
  • Bellambi
  • Keiraville
  • Austinmer
  • Wombarra

Get a quote today

Call or use the form with your suburb, what you can see and when you first noticed it. The enquiry goes to an independent provider, who contacts you to inspect and quote. The price is the provider's to set, not ours.

Call (02) 9072 0403

Last reviewed · Updated · First published