Duplex and Dual Occupancy Finance

Duplex finance is a construction loan that funds the building of two dwellings on a single site. It works the same way as a standard construction loan, with funds drawing in progress payments as each build stage is completed, but the lender and credit assessment account for the fact that two dwellings are being built rather than one. The title structure (single, strata, or torrens) affects which lenders are available and how the loan is assessed.

Yes. A duplex can be funded through a construction loan, though not all lenders who offer residential construction loans will fund a duplex build. Some require the project to be under a single title; others will fund strata or torrens-titled duplexes. SFG identifies the right lender from our 90+ panel based on your site, title structure, builder, and intended exit.

Yes. A council development approval is required before a lender will provide construction finance for a duplex or dual occupancy build. Some lenders also require a building permit (construction certificate or building approval depending on state). SFG can assist with finance planning during the DA process and submit your application once approvals are in place.

The mechanics are similar: staged drawdowns, interest on drawn funds only, repayment at completion or conversion to a mortgage. The differences are in how lenders assess the project: they consider the dual-dwelling structure, the title outcome, and whether the build is for one or two separate purchasers. Development lenders assess feasibility and gross realisation value; residential lenders assess on end value of the completed property.

Yes. SFG arranges duplex construction finance for Pty Ltd companies, family trusts, and individual borrowers. The entity type affects which lenders are available. Non-bank lenders tend to have more flexibility with company and trust structures, and for unique scenarios we can introduce you to private finance options. If the duplex is being developed for sale, a corporate structure is often preferred for tax and asset protection reasons.

Most residential construction lenders require a 20% deposit based on the end value of the completed duplex. Non-bank lenders may accept lower equity positions, particularly where the project has strong feasibility and a clear exit. The deposit is calculated on the combined completed value of both dwellings, not just the land. SFG compares deposit requirements across the panel for your specific project.

Yes. Owner-occupier and investment use are both eligible for duplex construction finance. Some lenders assess partial owner-occupier duplexes differently from pure investment builds, where the owner-occupied component may be eligible for lower interest rates or different LVR limits. SFG identifies lenders whose product aligns with your intended use of the completed dwellings.

If you intend to sell both dwellings separately, the title structure needs to be organised before or during construction, either torrens-titling each lot as a separate parcel, or strata-titling the dwellings as individual lots on one land parcel. The lender needs to know the exit plan at the time of application. Some development lenders structure the facility with partial discharge provisions so each sale settles independently and reduces the loan balance.