Building Costs & Planning
Knock down rebuild cost in Melbourne typically ranges from $350,000 to $800,000 or more for the completed home, depending on block size, design complexity and the finishes you choose. Demolition alone adds $15,000 to $40,000 before a single footing is poured. For most Melbourne homeowners, the knockdown rebuild cost that Melbourne builders quote for a well-specified home on a standard suburban block lands between $400,000 and $650,000.
- What Is a Knock Down Rebuild?
- Knock Down Rebuild Cost Breakdown
- Total Knock Down Rebuild Cost in Melbourne by Home Type
- Knock Down Rebuild vs Renovate: Which Is Right for Your Block?
- What Drives Knock Down Rebuild Cost in Melbourne
- The Knock Down Rebuild Process in Melbourne
- How to Afford a Knock Down Rebuild
- Knock Down Rebuild Budget Checklist
- Frequently Asked Questions
Key Takeaways
- Knock down rebuild cost in Melbourne ranges from $350,000 to $800,000+ for a complete project including demolition, design, construction and landscaping.
- Demolition costs $15,000 to $40,000 and is the first fixed cost before construction begins.
- Construction cost per square metre for a mid-specification Melbourne rebuild runs from $2,200 to $3,500.
- A knock down rebuild almost always costs more upfront than renovating, but often delivers a better long-term result on the same land.
- The block characteristics, design specification and builder you choose are the three biggest cost drivers.
- Davicon Group manages the full process from brief through to handover. Reach out to the team to discuss your block and get a proper quote.
What Is a Knock Down Rebuild?
A knock down rebuild is the process of demolishing the existing home on your block and constructing a brand new one in its place. You retain the land, which in most Melbourne suburbs has already delivered significant capital growth, and replace the structure with a home designed precisely for how you live today.
Davicon Group has over 20 years of experience delivering knock down rebuild projects across Melbourne’s established suburbs.
Who Does a Knock Down Rebuild Suit?
This option suits homeowners who love their location but have outgrown or are disappointed by their existing home. It is particularly compelling when the land value has grown significantly while the home has not, when structural remediation costs are approaching rebuild cost, or when the family needs a home designed from scratch for the next twenty years. It is also a practical choice for homeowners approaching a major renovation who want the certainty of a new build over the unknowns of working within an existing structure.
Knock Down Rebuild Cost Breakdown
Knock down rebuild costs are best understood in four stages. Each has a different cost driver, and surprises in the early stages compound through the rest of the project.
Stage 1: Demolition ($15,000 to $40,000)
Demolition in Melbourne costs between $15,000 and $40,000 for a standard suburban home. The main variables are house size, the presence of asbestos-containing materials and site access. A single-storey weatherboard on a clear block sits at the lower end; a double-storey brick veneer with asbestos requires licensed removal and sits at the upper end of that range.
Demolition also includes service disconnections (water, gas, electricity, sewerage), which add $2,000 to $5,000 if not included in the demolition quote. Site preparation, clean fill removal and soil testing add another $3,000 to $8,000 depending on soil conditions and site complexity.
Stage 2: Design and Planning ($15,000 to $60,000)
Design and planning costs depend on how bespoke the build is. A fully custom design with an architect and interior designer sits at the upper end. A home design and build service lets you work from a base design and customise the plans, with fees typically between $15,000 and $30,000.
Planning permits are required in some Melbourne suburbs, particularly where heritage overlay applies or where the proposed home exceeds standard height or setback limits. Allow $3,000 to $8,000 for planning permit costs and 8 to 16 weeks for council processing if a permit is required.
Stage 3: Construction ($280,000 to $650,000+)
Construction is the largest single cost item. The table below shows typical construction cost ranges for a Melbourne knock down rebuild in 2026 by home type.
| Home type and size | Typical construction cost |
|---|---|
| 3-bed single-storey, 200sqm | $280,000 to $380,000 |
| 4-bed single-storey, 250sqm | $350,000 to $480,000 |
| 4-bed double-storey, 320sqm | $450,000 to $600,000 |
| 5-bed double-storey, 400sqm+ | $580,000 to $800,000 |
| Luxury custom home | $800,000 to $1.5M+ |
Cost per square metre for a mid-specification Melbourne rebuild typically runs from $2,200 to $3,500. High specification and luxury builds sit above $3,500 per sqm. These figures cover the construction contract only and exclude demolition, design, landscaping, fencing and driveway.
Stage 4: Finishing Costs ($30,000 to $120,000)
Finishing costs are the most variable component of any knock down rebuild project. They include landscaping and fencing ($15,000 to $60,000), driveway and paths ($5,000 to $20,000), window furnishings ($5,000 to $20,000) and upgrades to appliances, joinery and tiles beyond the base specification. Most Melbourne homeowners find finishing costs land between $40,000 and $80,000 for a well-presented result. These costs are also the most controllable: decisions made in the design stage about garden size, driveway material and external cladding can move the finishing budget significantly without affecting the structural contract.
Total Knock Down Rebuild Cost in Melbourne by Home Type
Combining all four stages, the table below shows realistic total project cost ranges for a knock down rebuild in Melbourne in 2026.
| Home type | Total knock down rebuild cost |
|---|---|
| Standard 3-bed single-storey | $380,000 to $520,000 |
| Family 4-bed single-storey | $460,000 to $620,000 |
| Family 4-bed double-storey | $580,000 to $780,000 |
| Large 5-bed double-storey | $720,000 to $1,000,000 |
| Luxury custom home | $1,000,000+ |
These ranges assume a Melbourne suburban block, mid to high specification finishes, and a full-service builder managing design through to handover. The lower end of each range reflects standard finishes and a straightforward site; the upper end reflects premium finishes, a complex block or additional features such as a basement, pool or extensive landscaping.
Knock Down Rebuild vs Renovate: Which Is Right for Your Block?
Whether to renovate or rebuild is the question most Melbourne homeowners work through first. A knock down rebuild almost always costs more upfront than renovating, but a whole-home renovation on an older Melbourne property often costs far more than people expect and delivers less than they hoped.
When Renovating Costs More Than You Think
Structural renovation of an older Melbourne home can reach $300,000 to $500,000 once you account for asbestos removal, rewiring, replumbing, underpinning, damp treatment and the cost of working around existing rooms. Taking on home renovations in Melbourne at this scale rarely comes in cheaply, and achieving current NCC standards throughout is a fully managed project regardless. The Victorian Building Authority requires all residential building work over $10,000 to be carried out by a registered practitioner.
The hidden cost of renovation is compromise. Ceiling heights are fixed by the existing structure, room proportions are constrained by load-bearing walls, and energy performance is limited by what it is practical to retrofit.
When a Knock Down Rebuild Makes More Sense
- The existing home has significant structural issues or requires extensive remediation
- You want a home designed precisely for how you and your family live today
- The block has development potential or orientation advantages the existing home does not realise
- NCC 2022 energy efficiency and thermal performance matter to you
- You are planning to stay for 15 or more years
A knock down rebuild is also worth comparing to extending. If the existing home’s core is sound and you primarily need more space, home extensions in Melbourne can deliver significant additional floor area for considerably less than a full rebuild. The right answer depends on the condition of the existing structure, the block and your brief.
What Drives Knock Down Rebuild Cost in Melbourne
Understanding what moves the price helps you make better decisions about where to invest and where to hold back.
Block characteristics
A sloping block adds $20,000 to $80,000 in site preparation, retaining and foundation costs compared to a flat block. A corner block with additional street frontage can add to both design complexity and landscaping cost. Soil type matters significantly in Melbourne: reactive clay soils in the east and south-east require deeper footings and more engineered slab designs.
Home size and storeys
Cost per square metre is lower for larger homes because fixed costs (preliminaries, connections, roof) are spread across more floor area. However, total cost still rises with size. A double-storey home typically costs 15 to 25 per cent more than the equivalent single-storey floor area.
Specification level
The gap between a standard specification and a high specification on the same floor plan is typically $80,000 to $200,000. The biggest drivers are kitchen and bathroom joinery, benchtop material, flooring type, window specification and external cladding. Upgrading to stone benchtops, engineered timber floors and double-glazed windows moves a home from standard to high specification efficiently.
Builder and project type
Volume builders deliver pre-designed homes from a catalogue at a lower price point. A custom builder designs your home from scratch to your brief. The cost premium for a fully custom approach is real, but so is the difference in outcome: a home that fits exactly how you live, on a block that may have unusual dimensions, orientation or slope.
Council and planning requirements
Heritage overlays, ResCode requirements and council design guidelines vary significantly across Melbourne’s local government areas. A heritage overlay area can add substantial cost and time to the planning stage. Confirm what applies to your block early, before setting a construction budget.
The Knock Down Rebuild Process in Melbourne
Understanding the knock down rebuild process helps you plan your timeline and avoid the surprises that push budgets out. A full project in Melbourne typically runs 18 to 30 months from brief to handover, depending on design complexity, council processing times and construction program.
- Brief and design (3 to 6 months): Work with your builder to develop the design, confirm the specification and establish a cost plan. The more thorough this stage, the fewer surprises in construction.
- Planning and permits (2 to 6 months): Your builder prepares and lodges council submissions. Not all rebuilds require a planning permit, but all require a building permit. Some Melbourne councils process applications faster than others.
- Demolition and site preparation (4 to 8 weeks): Demolition, service disconnections, asbestos removal if required, site clean-up and soil testing.
- Construction (10 to 18 months): Progress payments are made at agreed milestones: slab, frame, lock-up, fixing and practical completion.
- Finishing and landscaping (6 to 12 weeks after practical completion): Landscaping, driveway, fencing and window furnishings.
Planning a knock down rebuild in Melbourne?
- Call Davicon Group on 1300 158 693 or email admin@davicongroup.com to discuss your block and get a proper quote.
How to Afford a Knock Down Rebuild
The most common way Melbourne homeowners fund a knock down rebuild is through a construction loan drawn against equity in the existing land. Unlike a standard home loan, a construction loan releases funds progressively at each build milestone so you only pay interest on what has been drawn down at any point.
Equity in your existing home
If you own your block outright or have significant equity in the existing home, most lenders will allow you to borrow against that equity to fund demolition and construction. The lender typically requires a fixed price building contract and a registered builder before approving the construction loan.
Construction loan structure
A construction loan is structured with a variable rate during construction, converting to a standard home loan at practical completion. You will need to demonstrate serviceability for the full loan amount, which means the lender assesses your ability to repay the completed mortgage, not just the construction drawings. Early in the planning process, talk to a mortgage broker who specialises in construction finance.
What Does a $400,000 Budget Actually Cover?
$400,000 is a workable budget for a modest three-bedroom single-storey knock down rebuild in Melbourne’s middle suburbs on a flat block with a straightforward design. At $2,200 to $2,500 per sqm for construction, $400,000 delivers roughly 150 to 180sqm of build. It is tight for a family home but achievable if you are disciplined about specification. Note that $400,000 covers construction cost; add $50,000 to $80,000 for demolition, design and landscaping to arrive at the total project cost.
Knock Down Rebuild Budget Checklist
- Demolition: $15,000 to $40,000 including asbestos assessment, service disconnections and site clean-up
- Soil test and site survey: $1,500 to $4,000
- Design fees: $15,000 to $60,000 depending on whether you use a custom architect or a design-and-build service
- Planning permit (if required): $3,000 to $8,000; allow 8 to 16 weeks for council processing
- Building permit: approximately 0.75 per cent of the construction cost
- Construction contract: $280,000 to $800,000+ depending on home size and specification
- Landscaping and fencing: $15,000 to $60,000
- Driveway and paths: $5,000 to $20,000
- Window furnishings: $5,000 to $20,000
- Contingency: 10 per cent of the construction contract as a minimum; 15 per cent for a complex block or design
- Financing costs: construction loan interest, lender’s mortgage insurance if applicable, and stamp duty on any bridging finance
Frequently Asked Questions
It is worth it when the land value significantly exceeds the value of the existing home, when whole-home renovation would cost nearly as much as rebuilding, or when you want a home designed precisely for your lifestyle on a block you already own in a suburb you already love. For most Melbourne homeowners who have held their land for ten or more years, the combination of land value and the quality of a new build makes it a strong financial and lifestyle decision. The key is getting the cost planning right before you commit.
$400,000 covers the construction cost of a modest three-bedroom single-storey home but not the full knock down rebuild project cost. Adding demolition ($15,000 to $40,000), design ($15,000 to $30,000) and landscaping ($20,000 to $40,000) brings the total project closer to $450,000 to $510,000. It is achievable for a compact, well-specified home on a flat block, but it is a tight budget for a four-bedroom family home.
In Melbourne’s established suburbs, buying an existing home that meets your needs is often cheaper upfront than a knock down rebuild. However, if you own land in a suburb where comparable new homes trade above $1.2 million, building on your existing block can be significantly more cost-effective than buying elsewhere. The calculation depends on your land value, design brief and the current market in your suburb. According to recent research on building versus buying, building costs have risen but so has the price gap between existing and new homes in established suburbs.
Most Melbourne homeowners fund a knock down rebuild through a construction loan drawn against equity in the existing land. The loan releases at each build milestone so you only pay interest on drawn-down funds. You will need a fixed-price building contract and a registered builder to satisfy lender requirements. If you plan to live elsewhere during the build, factor in rent or temporary accommodation costs alongside construction loan repayments.
The cheapest demolition is a straightforward mechanical demolition on an accessible flat block with no asbestos-containing materials. Getting three written quotes from licensed demolition contractors, confirming asbestos assessment is included, and scheduling outside peak periods typically saves $5,000 to $10,000 on the first quote. In Victoria, demolition work requires notification to relevant authorities and compliance with the Victorian Building Authority requirements on demolition approvals and asbestos management.
Not always. A planning permit is required if the property is in a heritage overlay, design and development overlay, or if the proposed new home exceeds ResCode requirements on height, setbacks or site coverage. Your builder or town planner will confirm what applies to your specific block by checking the zoning and overlay map on the council planning scheme. A building permit is always required for demolition and for the new construction.
Ready to Start Planning Your Knock Down Rebuild?
Getting the cost planning right before committing is what separates a knock down rebuild that runs smoothly from one that blows its budget at the demolition stage. It is one of the most significant building decisions a Melbourne homeowner makes, and the figures here are designed to give you a realistic starting point.
Davicon Group has delivered knock down rebuild projects across Melbourne’s established suburbs for over 20 years, as custom home builders in Melbourne registered with the Victorian Building Authority. If you are ready to move from planning to a proper quote, reach out to the team directly. Contact us on 1300 158 693 or email admin@davicongroup.com to discuss your block and arrange a proper quote.