Demolition is one stage of a rebuild
A demolition-only proposal ends with the agreed removal and site handover. A knockdown rebuild continues through a new home's design, construction and completion. Decide which end point you need before comparing prices or programmes.
Scope
List what is removed, retained and handed over.
Preparation
Resolve approvals, services and hazardous materials.
Complete budget
Include the work outside each contractor’s quote.
Next stage
Agree who takes responsibility for the site.
Compare the same end point
The NSW Planning Portal’s knockdown rebuild journey separates planning, approval, demolition, building and post-build stages. Use this NSW example to identify what each contractor is pricing.
- End point
- Demolition onlyRemoval of the agreed structures and handover of the site in a specified condition.
- Knockdown rebuildDemolition followed by the design, construction and handover of a new home.
- Work included
- Demolition onlyDefine structures, slabs, services, hazards, waste and site security in the quote.
- Knockdown rebuildAdd design, new-building work, connections, finishes and external work to the demolition scope.
- Approvals
- Demolition onlyConfirm what is required for the removal work and the property.
- Knockdown rebuildConfirm demolition and new-building approvals; one does not establish the other.
- Budget
- Demolition onlyCompare the agreed removal scope, allowances and exclusions.
- Knockdown rebuildCompare the complete project, including reports, accommodation and work outside the building contract.
- Programme
- Demolition onlyAgree on prerequisites, site work and the condition required for handover.
- Knockdown rebuildCoordinate demolition with design, approvals, procurement and the builder’s start requirements.
- Responsibility
- Demolition onlyName who arranges services, waste records, fencing and the final inspection.
- Knockdown rebuildAgree who takes control of the cleared site and coordinates the next stage.
A cleared site is not automatically ready for your chosen builder. Specify what happens to footings, slabs, pools, services and retained features, and agree on the condition the next contractor will accept.
Assess the building before choosing the scope
If renovation is still an option, assess what can be retained, repaired or adapted. YourHome’s renovation guidance recommends examining the existing home’s strengths, weaknesses, opportunities and risks. Our renovate-versus-rebuild guide covers that wider decision.
Demolition needs professional planning. Safe Work Australia’s demolition guidance identifies structural collapse, falls and hazardous materials among the risks and directs readers to their state or territory regulator for applicable requirements.
Arrange assessment before disturbing suspected asbestos. Asbestos NSW recommends professional sampling because appearance alone cannot confirm it. Check the applicable removal, notification, disposal and clearance requirements with the relevant regulator and contractor.
Confirm demolition and construction approvals
Ask your council and relevant building or planning authority about the actual property and proposed work, including heritage controls, trees, neighbouring structures and separate construction approvals. Use our demolition approval guide for official starting points.
As a NSW example, complying development guidance includes some demolition and new dwellings, subject to the relevant standards and land requirements. It does not establish eligibility for your project or a national approval route.
Agree on prerequisites and handover
The NSW Planning Portal’s demolition checklist covers service arrangements, site security, waste and the transition to construction. Ask how these responsibilities will be handled on your site.
- Resolve surveys, assessments and the approval route before committing to site dates.
- Confirm who arranges service isolation or disconnection and any retained live services.
- Agree on access, hazardous-material work, waste records and unexpected-condition procedures.
- Specify the inspection, remaining site work, fencing and security at demolition handover.
- Coordinate the builder’s start requirements and who controls the site between contractors.
Request a programme for the actual project, including design, approvals, procurement and accommodation where relevant. Record dependencies and how delays will be handled; a demolition duration does not describe the time needed for a completed new home.
Compare complete written proposals
Include reports, approvals, removal work, construction, connections, external work and accommodation in the overall budget. Mark costs outside each quote, and ask how variations and unknown conditions will be priced.
Consumer Affairs Victoria’s contract-change guidance distinguishes variations, prime cost items and provisional sums. It is a Victorian example; confirm the contract requirements and protections where you live.
Check relevant licences, insurance, experience and written warranties for each contractor’s work. Ask your insurer about changes during demolition, a vacant-site period and construction. Obtain a property-specific appraisal if resale matters; this guide does not promise a price premium, energy saving or financial return.
