Lenders assess KDR loans against the projected end value of the completed home, not the current land value. The total loan must cover the demolition costs, build contract and any existing mortgage payout. A conservative end-value estimate from the lender's valuer can affect how much you can borrow.
Valuation RiskMost lenders require a council DA and demolition permit before a KDR loan can settle. A signed fixed-price building contract from a licensed, registered builder is also usually required. Missing either of these at application stage can delay or stall the loan.
Approval RiskThese are general guide ranges only. Final terms depend on the end-value assessment, borrower profile, location and lender appetite.
KDR loans are assessed on the end value of the finished home, not the current value of the land. The lender needs confidence the completed property will support the debt before draw-downs begin.
KDR loans are assessed on the completed home's projected value, the strength of the approvals and contracts in place, and the borrower's ability to service the debt during and after the build.
If your build is larger in scope, you may also want to explore property development finance.
Most lenders will consider a KDR where the end value, approval status and build contract are clearly documented.
If you need to fund a temporary move during demolition, ask about renovation loan options or bridging structures.
These factors usually determine whether a KDR loan fits a standard bank pathway or needs a specialist construction lender.
The lender's valuer estimates the completed home's value before the loan is approved. A conservative end-value figure can reduce the available loan amount.
Lenders require a signed fixed-price contract with a licensed builder before the loan can be fully assessed. Cost-plus or informal arrangements are generally not accepted.
The cost of demolition must be factored into the total loan amount. Asbestos removal, excavation and site clearance costs can add significantly to the project budget.
The loan is drawn in stages tied to construction milestones such as slab, frame, lock-up, fit-out and completion. Interest is only charged on the drawn portion during the build.
Most lenders require a development approval and demolition permit before settlement. DA delays are one of the most common reasons KDR loan timelines stretch out.
If you have an existing home loan on the property, it must generally be refinanced into the new KDR construction loan. This affects how much additional borrowing capacity you have.
KDR projects have more moving parts than a standard purchase. Here are the issues that most commonly hold up or reduce a KDR loan.
If the lender's valuer estimates a finished value below your projections, the available loan amount may be reduced, which can affect your budget or deposit requirements.
Council approval timelines can vary significantly by location and project. Delays in receiving a DA or demolition permit can push back finance settlement and builder start dates.
Many borrowers overlook that the payout of an existing home loan must be included in the total KDR loan. This reduces the amount available for demolition and construction costs.
Lenders require a licensed and registered builder. Engaging a builder before confirming they meet the lender's requirements can create problems later in the application process.
Check the title, any existing mortgage, covenants and whether demolition is permitted under local planning rules.
Work with a licensed builder or architect to prepare plans suitable for a council development approval application.
Apply for development approval and a demolition permit early. Most lenders will not fully approve a KDR loan without these in place.
Get a signed, fixed-price contract from your licensed builder covering the full scope of work including demolition.
Submit the full application including financials, DA, building contract and plans. The lender will order an end-value assessment of the completed home.
Once the loan settles, funds are released in staged progress payments as construction milestones are completed and certified.
A knock down rebuild loan is a type of construction loan used when you already own a block and want to demolish the existing structure and build a new home. It is distinct from a standard construction loan because the demolition costs are included in the total project amount, and the lender needs to understand both the current land position and the projected end value of the finished build.
Unlike buying land and building new, a KDR project starts with an existing asset that may already have a mortgage attached to it. If there is an existing home loan on the property, the new KDR construction loan must pay it out and roll the balance into the new facility. This affects your total borrowing capacity and the deposit calculation.
The loan is drawn in progress payments tied to construction milestones, which typically include base or slab, frame, lock-up, fit-out and practical completion. During the build, interest is generally only charged on the drawn balance rather than the full loan limit. Once construction is complete, the loan converts to a standard principal and interest home loan.
The right lender for a KDR depends on the borrower profile, the complexity of the build and whether the site presents any unusual demolition or approval challenges. A borrower with strong income, a straightforward block and a licensed builder in a metro area may suit a mainstream bank. Projects with unusual demolition requirements, asbestos, non-standard builds or a self-employed borrower may need a specialist construction lender.

Knock down rebuild loans involve more moving parts than a standard purchase, including demolition costs, council approvals, a fixed-price build contract and an end-value assessment. Getting the right finance structure in place early matters.
Property Finance Help connects users with finance contacts who understand KDR lending and construction loan structures.
Property Finance Help is a lead generation service, not a lender, broker, or financial adviser. All information on this website is general in nature and does not take into account your personal objectives, financial situation, or needs. Consider seeking independent professional advice before making any financial decision.
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