One of the most common questions Wagga Wagga homeowners ask us is: “How much will this cost?” It is a fair question, and one we try to answer honestly, even though the true answer depends on many project-specific factors. This guide provides 2024 price ranges for the most common foundation repair services in the Riverina, along with the key factors that push costs higher or lower. For specific guidance on underpinning pricing, see our underpinning cost guide.
Quick answer (BLUF)
Foundation inspection in Wagga Wagga costs $350 to $900. Restumping costs $3,000 to $20,000+ depending on scope. Underpinning costs $8,000 to $50,000+ depending on method and extent. Drainage correction costs $1,500 to $12,000. These are ranges, the only way to get an accurate figure for your property is to commission an inspection and obtain itemised quotes.
Foundation inspection costs
A professional foundation inspection in Wagga Wagga typically costs:
- Building inspector (standard condition report): $350 to $550
- Structural engineer inspection (with floor level survey and written report): $600 to $900
- Pre-purchase building and foundation inspection: $450 to $700
Note that the cheapest inspection is not necessarily the most diagnostic. A structural engineer’s report gives a more specific diagnosis of foundation movement cause and type, which is particularly valuable if remediation works are anticipated.
Restumping and reblocking costs
Restumping costs in Wagga Wagga vary significantly with the number of stumps, the type of replacement stump, and access conditions.
| Scope | Indicative cost range |
|---|---|
| Partial restumping (4-8 stumps) | $2,500 to $6,000 |
| Restumping one side of house (10-20 stumps) | $5,000 to $12,000 |
| Full house restumping (30-60 stumps) | $10,000 to $25,000 |
| Verandah or outbuilding restumping | $1,500 to $6,000 |
| Adjustable steel stumps (premium) | Add 10-20% to concrete stump pricing |
Access is a major cost driver. Tight subfloor access (under 400 mm clearance) or confined site conditions (steep block, narrow side access) add cost to the excavation and stump installation process.
Underpinning costs
Underpinning cost varies most by method, scope, and depth of treatment required.
| Method | Typical Wagga cost range |
|---|---|
| Mass concrete underpinning (per pit) | $800 to $1,500 per pit |
| Full underpinning (10 pits) | $8,000 to $15,000 |
| Screw pier underpinning (per pier) | $600 to $1,000 per pier |
| Full screw pier job (10 piers) | $6,000 to $12,000 |
| Resin injection (slab lifting) | $3,000 to $8,000 (whole job) |
| Partial underpinning (one wall or one side) | $4,000 to $10,000 |
Deep subsoil conditions requiring extended pier length or additional excavation depth add cost. Rock or hard layer at depth (less common in Wagga’s alluvial plain, but possible) can add $1,000 to $3,000 per location. See our underpinning cost per metre guide for depth-based pricing.
Drainage correction costs
Drainage correction works range widely depending on scope:
| Work type | Indicative cost |
|---|---|
| Downpipe extension (per downpipe) | $200 to $500 |
| Subfloor drainage channel and pit | $2,000 to $6,000 |
| Perimeter ag drain (per metre) | $80 to $150 per metre |
| CCTV drain inspection | $400 to $800 |
| Drain reline or replacement (per metre) | $250 to $500 per metre |
| Full drainage and moisture correction package | $4,000 to $15,000 |
Foundation crack repair costs
Crack repair pricing depends on the number of cracks, their length and width, the material (brickwork vs render vs plaster vs concrete), and whether any structural preparation is required before cosmetic repair.
| Scope | Indicative cost |
|---|---|
| Single crack repointing (brickwork) | $200 to $500 |
| Crack injection and repointing (multiple cracks, one elevation) | $800 to $2,500 |
| Full internal plaster crack repair and repaint (one room) | $600 to $2,000 |
| Full facade crack repair and repaint | $1,500 to $6,000 |
What drives costs up
- Deep reactive clay requiring deeper underpinning pits or longer piers
- Heritage properties requiring specialist lime mortar and low-impact methods
- Tight site access adding time and complexity
- Unexpected conditions discovered during excavation (services, groundwater, rock)
- Significant stump deterioration requiring additional bearer jacking and blocking
- Engineering design fee where required (typically $1,500 to $4,000)
Getting an accurate quote
The only reliable way to get an accurate cost for your specific situation is to commission a foundation inspection followed by itemised quotes from at least two reputable contractors. Our guide on comparing foundation repair quotes walks you through what to check when comparing quotes.
FAQs
Are foundation repair costs tax deductible?
For investment properties, repair and maintenance costs are generally deductible in the year incurred, provided they restore an existing asset to its original condition rather than improve or upgrade it. Repairs that are more in the nature of capital improvements, new underpinning where no underpinning previously existed, for example, may need to be depreciated rather than immediately deducted. Consult your accountant.
Should I expect costs to vary much between different Wagga contractors?
A 20-30% variation between quotes for comparable scope is not unusual. Larger variations typically reflect differences in scope, assumed depth, materials specifications, or included versus excluded items. Our comparing quotes guide explains how to ensure you are comparing equivalent scopes.
Is there GST on foundation repair costs?
Yes. All prices quoted by registered GST entities include or exclude GST. Confirm with each contractor whether their quote is GST inclusive or exclusive. For a $15,000 quote excluding GST, the GST-inclusive price is $16,500. Always confirm which basis the quote is expressed on before comparing.