How to Finance a Knockdown Rebuild: Loan, Equity or Grant?

What are your main finance options for a knockdown rebuild?

Financing a knockdown rebuild typically combines several loan pathways because a knockdown and rebuild involves demolition, site preparation and constructing a new home. Understanding your key finance options early helps you manage cash flow, compare borrowing structures and plan your rebuild with confidence. Each option affects how you fund the cost to knock down and rebuild a house, how much deposit you’ll need, and the way your lender assesses your home loan.

Here are the main ways to finance a knockdown rebuild:

• Construction loan — Releases funds through progress payments at each build stage, allowing interest-only repayments throughout the construction process.
• Bridging finance — Short-term funding that helps you manage repayments if you’re transitioning between properties during your rebuild.
• Equity release or refinance — Access equity in your existing home, increase your home loan limit or refinance your mortgage to cover rebuild costs.
• Savings contribution — Any upfront savings can reduce borrowing needs and lower long-term interest costs.

For a deeper look at rebuild costs that influence your loan structure, explore our guide on knockdown rebuild costs in Melbourne. 

How does a construction loan work for a knockdown rebuild?

A construction loan is one of the most common ways to finance a knockdown rebuild because it releases funds in stages as your new home progresses. Instead of receiving the full loan amount upfront, your lender provides progress payments at key milestones, matching the way a knockdown and rebuild is delivered. This structure helps manage cash flow, limit interest charges and ensure funding aligns with each step of the construction process.

Here’s how to use a construction loan to fund your knockdown rebuild project:

• Slab stage — The first drawdown occurs once footings and the slab are complete.
• Frame stage — Additional funds are released when your home’s frame is erected.
• Lock-up stage — Payments continue once external walls, windows and doors are installed.
• Fixing stage — Interior items such as plaster, cabinetry and fittings are completed.
• Completion stage — The final payment is made after inspections confirm your new home is ready for handover.

Throughout the construction process, most lenders charge interest-only on the amount drawn so far, helping keep repayments manageable while your new home is being built. If you’d like to understand how construction stages fit into the broader rebuild journey, you can explore the overview in Carlisle’s knockdown rebuild guide.

Can you use your existing home equity to fund your rebuild?

Yes — many homeowners use their existing home equity to help finance a knockdown rebuild. Equity represents the difference between your property’s current market value and the balance of your home loan. When you have enough usable equity available, a lender may allow you to access it through refinancing, a redraw facility or a line of credit, giving you a practical way to fund your rebuild without relying solely on savings. This makes equity one of the most flexible finance pathways for a knockdown rebuild project.

To determine how much equity you can use, lenders look at several factors. Your loan-to-value ratio (LVR) must fall within acceptable limits, usually allowing you to borrow up to 80–90% of your property’s value. They also assess your income, expenses and the overall knockdown rebuild cost to ensure you can comfortably manage repayments throughout the construction process.

For many Melbourne homeowners, using equity is an effective way to cover demolition, site preparation and even part of the construction loan deposit — helping you move forward with your project while staying in the neighbourhood you love.

What government schemes or grants can support your knockdown rebuild?

Eligible buyers can access several government-backed schemes that help reduce the deposit, lower Lenders Mortgage Insurance (LMI) costs or improve borrowing capacity when financing a knockdown rebuild. While these programs are not specific to knockdown and rebuild projects, they can meaningfully support your overall home loan structure, making your rebuild more achievable.

Here are the main government grants for knockdown rebuild pathways:

• First Home Guarantee (FHG)
  Allows eligible first home buyers to purchase or rebuild with as little as 5% deposit, without paying LMI.
• Regional First Home Buyer Guarantee (RFHBG)
  Supports buyers constructing or rebuilding a new home in regional areas with a 5% deposit and no LMI.
• Family Home Guarantee (FHG)
  Enables eligible single parents or guardians to build or rebuild with a 2% deposit, helping them enter the property market sooner.

Together, these schemes can reduce upfront costs and improve loan affordability, giving homeowners more flexibility when choosing how to finance a knockdown rebuild. You can explore these options in more detail through our Home Guarantee Scheme overview.

Frequently asked questions

What type of home loan do you need for a knockdown rebuild?

The best home loan for your knockdown rebuild depends on your goals, financial situation and whether you plan to live in the new property or use it as an investment. Most borrowers choose between an owner-occupier loan, an investment loan, or a construction loan, with each option offering different features, repayment structures and approval requirements.

For example, if you're rebuilding your forever home, an owner-occupier loan with competitive interest rates may be the most suitable. If the project is for rental or resale purposes, an investment loan may provide tax and cash-flow advantages. Many homeowners also pair these products with a construction loan, which releases funds through progress payments during the build.

Understanding how these loan types work together helps you choose the most practical and cost-effective way to finance your knockdown rebuild.

How are you assessed for a construction loan?

When you apply for a construction loan, lenders assess both your financial position and the details of your knockdown rebuild project to determine whether you can comfortably manage repayments. This assessment is typically more detailed than a standard home loan because the lender must evaluate the staged nature of progress payments and the overall construction risk.

Key factors in a construction loan assessment include:

• Income and expenses — lenders review payslips, bank statements and liabilities to calculate your borrowing capacity.
• Credit history — a strong repayment record and clean credit report improve approval chances.
• Existing mortgage position — if you already have a home loan, lenders examine remaining debt and available equity.
• Project documentation — including your fixed-price building contract, plans, permits and cost breakdowns.
• Loan-to-value ratio (LVR) — lenders determine how much of the total project cost they are willing to finance.

By understanding these criteria before applying, you can better prepare your finances and ensure your knockdown rebuild progresses smoothly from approval to construction. Consult the Department of Transport and Planning for guidance on planning permit applications.

How much deposit do you need for a construction loan?

The deposit required for a construction loan is typically calculated as a percentage of your total knockdown rebuild cost, which includes demolition, site preparation, and the full cost to build your new home. Most lenders require at least 5–20% of the combined land value and construction contract, though the exact amount depends on your borrowing capacity, financial history, and whether you’re planning a knockdown and rebuild in Melbourne or building in a new estate.

Because the lender assesses the completed value of your brand-new, energy-efficient home, your required deposit can differ from a standard mortgage. Many homeowners use their existing equity as part of this contribution, reducing out-of-pocket expenses and helping them move forward with a rebuild project even when they still have a mortgage in place. Understanding your likely deposit early helps you estimate your total cost, compare your knockdown rebuild vs renovation budget, and avoid surprises later in the knockdown rebuild process.

If you’re unsure how your deposit fits into the broader cost to build a new home, your lender or mortgage broker can help calculate more accurate figures based on your project scope and location.

Can you get a loan if you have a mortgage?

Yes — you can get a loan for a knockdown rebuild even if you already have a mortgage. Lenders assess your eligibility by looking at your income, expenses, credit history, and the equity in your current home. This equity can significantly improve your borrowing capacity, helping you cover both the cost to demolish a house and the cost to build a new home on your existing block.

In many cases, homeowners choose to refinance their existing loan or combine it with a construction loan, allowing them to manage one repayment throughout the knockdown rebuild process. This approach is common for Melbourne homeowners whose current home no longer suits their lifestyle but who want to stay in their preferred suburb. Your lender will also consider the final value of your brand-new home, as this influences the total amount you can borrow for the rebuild project.

Before proceeding, it’s worth comparing your rebuild vs renovation costs to understand which option aligns best with your long-term goals and budget. A finance specialist can walk you through your scenario, including how your existing mortgage may affect your loan structure and overall project affordability.

Can you use a home equity loan?

Yes, many homeowners use a home equity loan to help finance a knockdown rebuild. If your current property has increased in value over time, you may have usable equity that can go toward the cost to demolish a house, site preparation, and the cost to build a new home on your existing block. This can be an effective way to fund a rebuild without needing extensive savings upfront.

Lenders typically assess your equity by calculating your loan-to-value ratio (LVR) and the current property value of your home. If the numbers stack up, you may be able to borrow additional funds through refinancing, a redraw facility, or a line of credit. These options allow you to access cash for a knockdown rebuild project while staying in the neighbourhood you love.

Using equity can also be more cost-effective than alternative lending because you’re leveraging the land value that has already grown, particularly common in Melbourne suburbs where demand for redevelopment is strong. It’s worth discussing your scenario with a finance expert to understand how much equity you can access and how it compares to a construction loan or other rebuild finance options.

What’s good to know about valuations?

When you're planning a knockdown rebuild, understanding how property valuations work is essential because they directly influence your borrowing capacity, rebuild cost planning, and the type of construction loan you can secure. A lender will organise a bank valuation to determine the current market value of your property, which helps them calculate your available equity and assess whether the total knockdown rebuild cost is feasible.

For many homeowners, this valuation process determines how much of the total cost to demolish and rebuild a house can be financed as well as how much deposit you'll need to contribute upfront. In some cases, the bank may also complete an “as if complete” valuation, estimating the value of your brand-new home once construction is finished. This can sometimes increase your borrowing potential, especially if you're building a new, energy-efficient home in a high-demand Melbourne suburb.

Because valuations can vary based on market conditions, location, and the design of your new home, it’s important to supply detailed plans, inclusions, and contract pricing so the valuer can accurately assess the final build value. A stronger valuation can help reduce LMI, improve loan terms, and ensure your knockdown rebuild project stays financially achievable.

Ready to explore your knockdown and rebuild finance options?

Financing a knock-down rebuild doesn’t have to feel overwhelming. With clear guidance, the right lending structure, and an upfront understanding of rebuild costs, you can move forward with confidence, whether you’re comparing construction loans, using home equity, or exploring government-backed schemes to reduce upfront expenses. Our team helps you understand each pathway so you can choose the most cost-effective option for your new home.

Our specialists can connect you with trusted finance partners who understand the nuances of how to finance a teardown and rebuild and can tailor solutions to your situation. Start your knocdown rebuild financing consultation today and get closer to building your dream home.