Buying

Building inspector or structural engineer before you buy?

What a pre-purchase building inspection covers in Hobart, what it costs, and when to add a structural engineer before you sign.

Printed defect report with crack photos, a crack gauge, glasses and a red pen beside a laptop showing plans on a timber desk

In short

Before buying in Hobart, start with a pre-purchase building inspection: a visual check of the whole house to AS 4349.1, which local inspectors publish at about $500–$968. Add a structural engineer when the inspector flags cracks, movement, sloping floors, failing retaining walls or a steep or landslip block. Tasmania has no general statutory cooling-off period, so make the inspection a condition of the contract.

Key takeaways

  • A building inspector checks the whole house for defects. A structural engineer finds the cause and seriousness of a structural problem.
  • Published Hobart building inspection prices run from about $500 to $968. Our pre-purchase structural inspection starts from $590 + GST.
  • Tasmania has no general statutory cooling-off period. Your building inspection condition is your window, so set it before you sign.
  • If the inspector writes "refer to a structural engineer", book the engineer inside the condition period, not after it.

"Building inspection Hobart" is one of the most searched property terms in Tasmania, and for good reason. But a building inspector and a structural engineer do different jobs. Knowing which one you need, and in what order, can save you money and stop a structural problem slipping past your contract deadline.

Inspector or engineer: quick facts

Building inspector
Visual whole-of-house check to AS 4349.1
Structural engineer
Cause, severity and repair scope of structural issues
Inspector price
About $500–$968 from published Hobart prices
Our engineer's inspection
From $590 + GST
Cooling-off
None by law in Tasmania: use a contract condition
Our quote
Fixed, within 1–2 business hours

What is the difference between a building inspector and a structural engineer?

A building inspector looks at the whole house for defects; a structural engineer looks at whether the structure is sound, why it is moving and what it would take to fix. The inspection is broad and visual. The engineer's assessment is narrower and deeper, and it can lead to a repair design and certificate.

 Building inspectorStructural engineer
Main questionWhat defects does this house have?Is the structure sound, and why is it moving?
ScopeRoof, walls, wet areas, subfloor, site drainage, safety itemsFootings, stumps, slabs, framing, cracks, retaining walls, slope
BasisAS 4349.1, visual, accessible areasEngineering assessment; cracks rated against AS 2870
WhoOften a licensed builder: ask what licence they holdA licensed Engineer – Civil under the Occupational Licensing Act 2005
ReportDefect list with photos; refers specialist items onCause, severity, repair scope and urgency, signed by the engineer
Cost in HobartAbout $500–$968 (published prices)From $590 + GST (our fee)
Can design a repair?NoYes, with a Form 35 for the building surveyor

Inspector prices from Swell Building Inspections ($550–$968 inc GST) and Building Evaluate ($500–$750, GST not stated), checked November 2026.

How much does a pre-purchase inspection cost in Hobart?

A pre-purchase building inspection in Hobart typically costs about $500 to $968, depending on the size of the house. An engineer's pre-purchase structural inspection from us starts at $590 + GST, and you get a fixed quote before anything is booked.

ServiceWhat the figure coversPrice
Building inspection, 1-bed unitSwell Building Inspections, published$550 inc GST
Building inspection, 3-bed 2-bath houseSwell Building Inspections, published$770 inc GST
Building inspection, 5-bed 3-bath houseSwell Building Inspections, published$968 inc GST
Building inspection, typicalBuilding Evaluate, South Hobart$500–$750
Pre-purchase structural inspectionOur engineer's site inspection and reportFrom $590 + GST

Larger, rural or unusual properties are quoted separately by most inspectors. For the engineer, a steep block, a long subfloor or several structures (a house plus a granny flat and high retaining walls, for example) take longer, and your fixed quote reflects that.

Is there a cooling-off period when buying a house in Tasmania?

No. Tasmania has no general statutory cooling-off period for residential sales. The Property Agents and Land Transactions Act 2016 removed the old cooling-off provisions and left these matters to industry standard form contracts. The regulator's guidance says cooling-off periods are not a requirement, and that the most common protections are finance and building inspection conditions.

Your inspection condition is your window

Ask your conveyancer or lawyer to include a building inspection condition before you sign, with enough time to add a structural engineer if the inspector finds something. This is general information, not legal advice.

Other states differ. NSW and Queensland, for example, have statutory cooling-off periods, so advice written for those states doesn't apply here.

When should you add a structural engineer before you buy?

Add an engineer whenever the building inspector refers a structural item on, or when the house or block shows signs of movement. This flow covers the common triggers.

  1. Has the building inspector recommended a structural engineer?

    Many reports refer cracking, footing or framing issues to a specialist.

    Yes: book an engineer inside the condition periodNo: keep going
  2. Are there cracks 5 mm or wider, stepped cracks, sloping floors or sticking doors?

    A crack of 5 mm or more is moderate damage on the AS 2870 scale.

    Yes: get the cause foundNo: keep going
  3. Is it a steep block, in a landslip band, or held up by retaining walls over 1 m?

    Slope and walls carry costs a defect list won't price.

    Yes: ask about landslip and wallsNo: keep going
  4. Have walls been removed, or a deck, extension or granny flat added?

    Ask the vendor for approvals and certificates.

    Yes: have the structure checkedNo: the building inspection is usually enough
  1. Cat 0Negligible< 0.1 mm
  2. Cat 1Very slight< 1 mm
  3. Cat 2Slight< 5 mm
  4. Cat 3Moderate5–15 mm
  5. Cat 4Severe15–25 mm
  6. Cat 5Very severe> 25 mm
Figure 1Damage categories for walls, with approximate crack widths. Crack width is a guide only: the number, pattern and location of cracks also matter.Source: AS 2870-2011 Residential slabs and footings, Appendix C, Table C1.

What does a pre-purchase structural inspection include?

Our pre-purchase structural inspection is a site visit by a licensed engineer and a signed report on the structure. It focuses on the items that change what a house is worth or what it will cost you after settlement.

  • Cracks measured, photographed and rated against the AS 2870 damage categories
  • Footings, stumps, bearers and subfloor where they can be reached
  • Floor levels, door and window distortion, and framing over openings
  • Retaining walls, slope, site drainage, trees and any landslip band
  • The likely cause, how serious it is, whether a repair is needed and its likely scope
  • Work that looks unapproved, so your conveyancer can ask the vendor for paperwork
Subfloor of a raised timber house with old timber stumps under the bearers, lit by a torch, and a yellow tape measure on red soil
Figure 2Subfloors are where many Hobart houses show their age: stumps, bearers, ventilation and moisture are checked where access allows.

We are engineering only. We don't sell or carry out repairs and we don't recommend contractors, so the report is about the house, not a job. If a repair is needed, we can design it later for any licensed builder to price.

Can a structural engineer replace the building inspection?

Usually not. An engineer won't report on leaking showers, roof plumbing, electrical safety or timber pests, which a building inspection and a pest inspection cover. The two work best together: the inspector finds the issues across the whole house, and the engineer answers the structural ones. If the only concern is a known structural issue, such as a cracked wall you've already seen, an engineer's structural inspection may be all you need for that question.

When should you call a structural engineer before buying?

  • The building report says "refer to a structural engineer" or "further investigation"
  • Cracks are 5 mm or wider, stepped through brickwork or wider at one end. See cracks in walls
  • Floors slope or doors stick, which can point to footing or stump movement
  • Retaining walls lean or bulge, or the house sits on a steep block
  • The area has reactive clay, such as dolerite-derived clays. See Hobart soils
  • Your condition deadline is close: tell us the date when you ask for a quote

Send the building report with your request

Upload the inspector's report, a few photos and the condition or settlement date. Your fixed quote, within 1–2 business hours, says what's included and when you'll have the report. Get a fixed quote.

Sources

  1. Parliament of Tasmania, Fact sheet: Property Agents and Land Transactions Bill 2016. Cooling-off provisions removed and left to standard form contracts
  2. Consumer, Building and Occupational Services (now Consumer Affairs Tasmania), Advice on buying and selling property. Cooling-off periods are not a requirement; finance and building inspection conditions are the most common
  3. Swell Building Inspections, Building inspection costs in Hobart, Tasmania: 2026 pricing guide. $550–$968 inc GST for standard homes
  4. Building Evaluate, Pre-purchase building inspections (South Hobart). Typical $500–$750; GST not stated
  5. Standards Australia, AS 4349.1 Inspection of buildings, Part 1: Pre-purchase inspections, residential buildings
  6. Standards Australia, AS 2870-2011 Residential slabs and footings. Appendix C, damage categories for walls

FAQ

Building inspections and engineers: FAQs

Still unsure? Call 03 6146 4747 or send photos for a fixed quote.

Do I need a building inspector or a structural engineer before buying in Hobart?
Most buyers need a building inspector first, for a whole-of-house check. Add a structural engineer when the inspector recommends one, or when you can see wide or stepped cracks, sloping floors, failing retaining walls or a steep or landslip block.
How much does a pre-purchase building inspection cost in Hobart?
Published Hobart prices run from about $500 to $968 for a standard home, depending on size. Our pre-purchase structural inspection by an engineer starts from $590 + GST, with a fixed quote first.
Is there a cooling-off period when buying a house in Tasmania?
There is no general statutory cooling-off period in Tasmania. Buyers rely on conditions written into the contract, most often finance and building inspection conditions, so ask your conveyancer or lawyer to include one before you sign.
What does a building inspector check?
A pre-purchase building inspection to AS 4349.1 is a visual check of the accessible parts of the house and site for significant defects, such as roofing, wet areas, subfloor, framing and drainage. Where something needs closer investigation, the inspector refers it to a specialist such as a structural engineer.
What does a structural engineer check before I buy?
The structure: cracks measured and rated against AS 2870, footings, stumps and subfloor where accessible, framing over openings, retaining walls and drainage. The report explains the likely cause, how serious it is and the likely scope of any repair. See our pre-purchase structural inspection.
Can I book a structural engineer after the building inspection?
Yes, and that's the usual order. Send us the building report and your condition deadline, and the fixed quote will state the delivery date so you can decide whether it fits.
Do you do building and pest inspections?
No. We are structural engineers, so we don't do general building and pest inspections or timber pest reports. Book those with a building inspector and a pest inspector, and use us for the structural questions they raise.

Ready when you are

Send a few photos. We'll send a fixed price.

Photos or plans are enough to quote. You'll have a fixed quote within 1–2 business hours, with whether the job needs a site visit and when you'll receive it.

Mon–Fri 8:00am–5:00pm · Prices from $350 + GST · Engineering only, independent advice

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