Knockdown-Rebuild
SB Custom Homes coordinates knockdown-rebuild projects for homeowners and investors replacing an existing dwelling with a new home on the site. We manage the rebuild as one connected project, including demolition coordination alongside the planning, approvals and construction pathway required for the replacement home.
Demolition is not offered as a standalone service, and project suitability depends on the property, site conditions, location and required approvals.
Knockdown-Rebuild Project Components
A knockdown-rebuild can bring several coordinated building components together, with the exact mix determined by your site, replacement-home plans, project scope and required approvals.
Site Assessment
Design & Planning
Consultant Coordination
Approvals Coordination
Demolition Coordination
Site Preparation
Replacement Home Build

Happy Customers
Read Reviews...

We wanted to stay in the area we already knew, but our existing house no longer suited our needs. We approached SB Custom Homes about a knockdown rebuild and wanted one team to help us understand how demolition, planning and the new home would connect. What mattered most to us was having a clear pathway from assessing the property through to building the replacement home, rather than treating demolition as a separate job.
Knockdown Rebuild Planning
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Our main concern was how to demolish and rebuild our home without having to work out every stage on our own. We had ideas for the replacement house but needed help understanding what had to happen before demolition and how the design and approvals would fit into the project. We valued having the demolition component coordinated as part of the wider rebuild, with the next steps explained in relation to the site and proposed home.
Demolition Coordination
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We were looking at rebuilding on our existing block because the location still worked for us, even though the house did not. Before committing, we needed someone to look at the property, understand what we wanted to replace it with and explain the practical steps involved. SB Custom Homes gave us a project pathway that considered the existing dwelling, the replacement-home plans and demolition coordination together rather than as disconnected parts.
Existing Block Rebuild
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We already had a strong idea of what we wanted in our replacement home, but we were unsure how much design and planning support we would need before the old house came down. Our knockdown-rebuild enquiry was about more than construction; we also wanted clarity around the site, consultants, approvals and demolition sequence. The benefit for us was being able to discuss those moving parts as one project and shape the next steps around our plans.
Rebuild Planning Support
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We had plans prepared for a new house and needed a builder who could assess whether they were suitable for our knockdown-rebuild project. Our questions were mainly about the existing property, demolition coordination, approvals and how construction would proceed once the site was ready. We appreciated being able to start with the plans we already had while still discussing the project-specific requirements that needed to be resolved before the replacement home could move forward.
Existing House Plans
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Demolition coordination was one of the biggest reasons we contacted SB Custom Homes. We did not want a demolition-only service; we wanted the old home removed as part of a properly planned rebuild. Being able to discuss the site assessment, replacement-home goals, required approvals and construction pathway together made the process easier to understand. It gave us a clearer picture of what information was needed before the project could progress from the existing dwelling to the new build.
Coordinated Home Rebuild
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We were genuinely unsure whether renovating the existing house or starting again would make more sense for what we wanted to achieve. Instead of looking for a one-size-fits-all answer, we needed the condition of the home, the amount of change we wanted, the site and the approval requirements to be considered together. Talking through the renovate-or-rebuild decision helped us focus on the actual project requirements before moving towards a knockdown-rebuild pathway.
Renovate Or Rebuild
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We were planning a knockdown rebuild in Melbourne's south-east and wanted to understand whether our property and replacement-home goals were a suitable fit before going too far. We shared the site details, information about the existing dwelling and our ideas for the new home so the project could be considered properly. What we wanted most was a coordinated pathway covering the early assessment, demolition, planning requirements and the build itself, with the scope confirmed around our particular property.
Melbourne Knockdown Rebuild
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Do you arrange demolition?
Yes. For an accepted knockdown-rebuild project, SB coordinates demolition contractors as part of the overall project. The demolition component is tied to the wider site, planning, approval and replacement-home pathway rather than offered separately.
Can I use SB only for demolition?
No. SB does not offer demolition as a standalone service. Demolition is coordinated only when SB is taking on the broader knockdown-rebuild project, including the pathway toward the replacement home.
Can you design the replacement home?
Yes, depending on the project. SB can coordinate design, planning, relevant consultants, approvals and construction, or the replacement home may proceed from suitable completed or approved plans. Detailed design-and-build responsibilities depend on the project scope.
Do I need approvals before demolition starts?
Potentially. The approvals and sequencing required before demolition are project-specific. SB can coordinate planning, building permits and relevant approvals where applicable, but no permit or approval is guaranteed. The property and proposed replacement home need to be assessed before the correct pathway is confirmed.

Phone Number
0430 433 100
Business Location
94 Greendale Boulevard, Pakenham VIC 3810
E-Mail ID
[email protected]Discuss Your Rebuild Project
Planning to replace an existing home? Use the project enquiry form to share the property location, information about the existing dwelling and site, and any plans, ideas or goals for the replacement home. SB Custom Homes can use those details to understand the proposed knockdown-rebuild, identify what needs further assessment and discuss the appropriate next steps, including a site visit where required.
A Coordinated Rebuild Path
Why Choose SB for a Knockdown-Rebuild
A knockdown-rebuild involves more than arranging demolition. SB Custom Homes coordinates the demolition component within the wider building project, connecting it with the replacement-home pathway so the site, design, approvals and construction requirements can be considered together.
Depending on the project, that coordination can extend from consultation and site assessment through design and planning, relevant consultants, approvals, pre-construction, construction, inspections and handover. Specialist work may be completed by appropriately qualified trade or consultant partners, while SB manages overall project coordination, communication and quality management.
We are also clear about the limits of the service. Demolition-only work is not offered, and SB does not promise a standard approval path, timeframe or cost for every property. Suitability is assessed against the proposed scope, site conditions, location and required approvals so the appropriate project pathway can be established.
Renovate or Rebuild?
The right pathway depends on the existing home, the changes you want, site conditions, project scope and applicable approvals.
| Decision Factor | Renovation Question | Rebuild Question |
|---|---|---|
| Desired Change | Can the existing home accommodate the changes you want? | Do your goals involve replacing the existing dwelling? |
| Existing Condition | What condition is the existing home in? | Does replacement better match your overall project goals? |
| Project Scope | How extensive are the proposed alterations or extensions? | Are you planning a complete replacement home? |
| Site Constraints | What site conditions could affect the proposed renovation? | What site conditions could affect demolition and rebuilding? |
| Approvals | What approvals apply to the proposed renovation work? | What approvals apply before demolition and rebuilding? |
| Project Assessment | Does a project-specific assessment support retaining the existing home? | Does the assessment support replacing it with a new home? |
Six Things to Know Before a Knockdown-Rebuild
These practical points can help you prepare a useful enquiry and understand how project suitability is assessed.
01 Share Property Details
Include the property location, information about the existing dwelling and site, plus any plans, ideas or goals for the replacement home so the proposed project can be assessed properly.02 Demolition Is Integrated
Demolition is coordinated as part of the wider knockdown-rebuild project. SB does not offer demolition-only work, so removal and the replacement-home pathway are considered together.03 Site Visit for Quoting
Free initial quotations are available for suitable projects. A site visit is recommended for most building projects and may be required before an accurate quotation can be prepared.04 Pre-Construction Fees
Design, planning, engineering, surveying, building permits and specialist consultants may involve separate fees. Required professional services and associated costs should be confirmed before proceeding.05 Timing Depends on Scope
There is no single timeframe for an entire knockdown-rebuild journey. Site conditions, complexity, materials, selections, variations, approvals and other project-specific factors can affect the schedule.06 Location and Project Fit
SB’s primary focus is Pakenham and Melbourne’s south-east. Broader Greater Melbourne projects may be considered case by case depending on project size, scope and location.
Your Knockdown-Rebuild Path
A knockdown-rebuild brings several connected stages together. The exact requirements and sequencing depend on your property, replacement-home plans, project scope and applicable approvals.
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01
Initial Project Discussion
Start with your property, goals, budget and ideas for the replacement home. Existing plans or drawings can also be discussed if you already have them. -
02
Site & Property Assessment
The existing dwelling, site conditions and proposed project are considered so SB can identify what requires further assessment and whether a site visit is needed. -
03
Design & Planning
Depending on the project, SB can coordinate replacement-home plans, engineering and other relevant documentation, or work from suitable completed or approved plans already prepared. -
04
Scope, Quote & Approvals
The project scope and quotation are developed around the proposed work. Planning, building permits, consultants and other approvals are coordinated where applicable. -
05
Pre-Construction & Demolition
Selections, scheduling and site preparation are organised before construction. Demolition is coordinated within the wider rebuild, with its timing determined by the requirements of the individual project. -
06
Replacement-Home Build
Once the project is ready for construction, SB coordinates relevant trades and subcontractors as the replacement home progresses through the build. -
07
Checks, Completion & Handover
Required inspections and quality checks are completed during the project, followed by finishing work, attention to outstanding items and final handover.
