Who this is for
- Bankstown and Canterbury-Bankstown owners planning to replace an existing house
- Families thinking about a dual occupancy so relatives can live on the same block
- Owners whose home is older and needs more than a renovation
- Homeowners who want a new home in the suburb they already live in
Why the local planning rules matter to your loan
A knock down rebuild Bankstown owners plan is financed as a staged build, and your lender will look at the plans, approvals and budget before releasing funds. A KDR Canterbury-Bankstown project, including a duplex, is assessed on the approved design and costs. Duplex Bankstown finance is treated differently from a single-dwelling rebuild, so raise it with your broker at the start.
Your loan can only be as strong as the approval behind it. Lenders want to see that the project is approved, or approvable, before they fund it, and a dual occupancy has two dwellings to assess, not one.
Planning rules also differ block by block: heritage, flooding, bushfire and other constraints can rule a site out of the state policy, so check the actual property, not the suburb.
KDR Canterbury-Bankstown: what NSW planning now allows
The NSW Government's Low and Mid-Rise Housing Policy has two stages. Stage 1, from 1 July 2024, permits dual occupancies and semi-detached homes in all R2 low-density residential zones. Stage 2, from 28 February 2025, permits dual occupancies, multi-dwelling housing and residential flat buildings within low and mid-rise housing areas, which are residential zones within 800 metres walking distance of nominated town centres and stations. See the NSW Planning frequently asked questions (updated 17 December 2025).
The policy does not apply to land affected by some constraints, including bushfire prone land, certain flood prone lands, heritage items and mapped Transport Oriented Development areas. Check your own address on the NSW Planning Portal spatial viewer.
Council approval or a private certifier: which pathway
Canterbury-Bankstown Council says all development applications must be lodged online through the NSW Planning Portal. Most developments under the low and mid-rise policy are local development applications assessed by council, according to NSW Planning. Some dual occupancies, manor houses and terraces can go through complying development, which is approved by a certifier if the proposal meets the code. Council notes the Medium Density Housing Code commenced in the Canterbury-Bankstown area on 1 July 2020. Ask council, or a town planner, which pathway fits your block.
How lenders treat duplex Bankstown finance and dual occupancy rebuilds
If you will live in one dwelling and keep or rent the other, lenders generally assess the project as a construction loan, with the rental income treated according to their own policy. If you plan to subdivide and sell, the finance can shift into a business-purpose discussion with different rules, so speak to us first. Lenders vary, and we match you after reviewing your plans and your numbers.
Budgeting a knock down rebuild Bankstown project
Add up demolition and asbestos checks, plans and approvals, rent while you are out of the house, and interest during the build. We build these into a cash flow before you sign a building contract, and we help you compare a rebuild with buying elsewhere. Learn more about working with a Bankstown mortgage broker or see our general Bankstown home loans page.
How Mortgagefy helps
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
Check the block
We help you check zoning, constraints and the likely approval pathway before you spend on plans.
Structure the finance
We review your equity, existing loan and whether a single or dual occupancy suits your goals.
Approvals and contract
With approvals, a fixed-price contract and insurance in place, we prepare the application.
Build and move in
Funds are released in stages against progress while you follow the build.
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 build a dual occupancy on my Bankstown block?
Do I need council approval for a knockdown rebuild in Canterbury-Bankstown?
Will a lender fund a dual occupancy rebuild?
How much can I borrow to knock down and rebuild?
Is a knock down rebuild Bankstown owners plan better than selling and buying?
Information checked on 1 October 2026. Policies, government schemes and lender participation may change. Planning information is from NSW Planning (Low and Mid-Rise Housing Policy FAQ, updated 17 December 2025) and Canterbury-Bankstown Council web pages, checked on 1 October 2026.
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 Bankstown knockdown rebuild assessment
Bring your block details and plans and we will show you how the approval pathway, equity and construction loan fit together.