Knock Down Rebuild Loan Sydney | KDR Finance

Who this is for

Sydney homeowners with an older house on a good block who would rather rebuild than move
Owners whose existing home is too small, too costly to renovate or has structural or asbestos issues
Buyers who purchased a house mainly for the land and always planned to demolish
Families who want a new home without paying stamp duty and agent fees on a second purchase

Why a knock down rebuild loan Sydney lenders offer is not a normal home loan

Knockdown rebuild finance sits between a home loan and a construction loan: the lender funds the demolition and the new build, and you may need to plan where you live during the works. A KDR loan can be structured in different ways depending on the lender, for example by refinancing or extending an existing loan into a staged construction facility. Talk to a broker before you sign a demolition or building contract.

Your current loan is secured by an existing house. Once it is demolished, the security changes: the lender is now lending against a block of land with a partly built home on it. Lenders assess this differently, and the way your loan is structured before demolition matters.

Most people underestimate the gap between the end of the old home and the start of the new one. Demolition, site works, temporary accommodation and interest on the existing debt all land before you have a finished house to show for it.

How lenders value a knockdown rebuild (KDR loan)

Construction lenders commonly work from two figures: the value of the land as it stands, and the value of the finished home, often called an 'as if complete' valuation. The borrowing limit is usually tied to both, and how the loan-to-value ratio is calculated varies between lenders.

Your existing home may have little or no value to a lender once it is going to be demolished. That is why the land value, your equity in it and the fixed-price building contract carry so much weight in the assessment.

The costs that catch owners out

Budget beyond the builder's contract price. Items that commonly sit outside it include:

Demolition and site clearing, including asbestos removal in older homes
Rent or temporary accommodation for the length of the build, which can run to many months
Council or certifier approval costs, plans, engineering and soil testing
Connection or upgrade of services, landscaping, driveways and fencing
Interest on the loan while progress payments draw down

Approvals: what has to be in place before you demolish

Most rebuilds need either a development application to council or a complying development certificate from a private certifier, plus the demolition approval. Lenders generally want approved plans, a fixed-price contract with a licensed builder and home warranty insurance evidence before they release funds. See the NSW Government's planning information on the NSW Planning Portal and speak to your council early.

How Mortgagefy helps with knockdown rebuild finance

Construction lending policy varies from lender to lender, and your broker matches you to a suitable lender once your plans and numbers are clear. We explain the structure, the costs and the timing in plain English before you commit to anything.

Model your repayments with our Sydney home loan calculators and read how construction loans work and progress payments in NSW to see how funds are released. Our construction home loans hub covers the wider picture.

How it works: 4 simple steps

Review your position

We look at your equity, current loan and the block, and tell you whether a rebuild stacks up against renovating or selling.

Match a lender

Construction policy differs, so we shortlist lenders whose approach to demolition, valuation and rent-during-build suits you.

Lock in the contract pack

Plans, approvals, a fixed-price building contract and insurance are assembled in the format the lender expects.

Build and draw down

Funds are released in stages as the build progresses. We stay across the process until you move in.

Get your personalised answer in 2 minutes

Free, no obligation. We'll match you with the right lender for your situation.

Frequently asked questions

Can I get a knock down rebuild loan Sydney lenders will assess for my house?

Yes, lenders offer construction loans for this. The structure depends on your equity, the land value, the building contract and the lender's policy, so it needs to be assessed case by case.

Will I need to pay rent during the rebuild?

Usually yes, as you cannot live on site. Many owners budget for temporary accommodation for the whole build. Some lenders will consider it in your servicing assessment, but policy varies, so confirm with your broker.

What is an 'as if complete' valuation?

It is a valuation of what the property is expected to be worth once the new home is finished, based on plans and the building contract. Lenders may use it alongside the land value to set your borrowing limit.

Do I pay interest during construction?

Construction loans commonly charge interest only on the amount drawn so far, and you draw funds in stages. Terms differ between lenders, so ask for the loan terms in writing.

Is a knockdown rebuild cheaper than buying a new home?

It can avoid transfer duty and agent fees on a second purchase, but demolition, rent and cost overruns can offset that. Run the numbers using our calculators before you commit.

Information checked on 1 October 2026. Policies, government schemes and lender participation may change.

Confirm current requirements and lender participation directly with your chosen provider before applying.

This information is general in nature. Policies vary by lender and change frequently. Confirm current requirements with your chosen provider and seek professional advice.

Get your free Sydney knockdown rebuild assessment

We map out equity, demolition costs and the drawdown schedule so you know the full cost before you sign a building contract.

Start Your Free Assessment Call 0432 634 648

Knock Down Rebuild Loan Sydney: Finance the Demolition and the New Build