What Your SMSF Can and Can’t Do With a Mortgaged Property
Key Takeaways A mortgaged property in a Self-Managed Super Fund (SMSF) comes with rules that surprise many trustees after settlement, not before. Whether the fund can pay for a new kitchen, or build a granny flat out the back, turns on distinctions that sound like hair-splitting but carry real consequences. Every job is either a repair, an improvement, or a change big enough to create a different asset, and the fund’s options differ for each. These rules exist because an SMSF loan is not an ordinary mortgage. Under a Limited Recourse Borrowing Arrangement (LRBA), the property sits in a separate holding trust, and the lender’s recourse is limited to that single asset, which is exactly why the law restricts what can happen to it while the loan runs. If you are still weighing up whether the structure suits your fund, an SMSF loan broker can walk you through the borrowing side. This article covers what comes after, namely what your fund can and cannot do with the property once it is geared. One recent change matters before any of this. Since 10 August 2026, under the changes to SMSF borrowing, a new SMSF loan can only buy commercial (business real) property, so the residential examples below apply to loans taken out before that date, which stay in place under grandfathering. Why the Rules Are Strict While the Loan Is Running Superannuation law allows an SMSF to borrow only under narrow conditions, and one of them is that the borrowing relates to a single acquirable asset held on trust until the loan is repaid. If borrowed money could be poured into upgrades, the fund would be gearing up beyond the original purchase, adding the very risk to retirement savings that the limited recourse structure exists to contain. The Australian Taxation Office (ATO) sets this out in ruling SMSFR 2012/1, which draws two lines. The first is about where the money comes from. Borrowed funds can maintain and repair the asset, but only the fund’s own cash can improve it. The second is about how far a change can go. No matter whose money pays for it, the asset must stay fundamentally the same asset, and crossing either line can breach the borrowing rules. What the Work Does to the Asset Almost every ‘can my fund do this’ question lands in one of three buckets, decided not by the size of the invoice but by whether the work restores, betters or transforms the asset: Repairs and Maintenance A repair restores something to the condition it was in, or should have been in, without making it substantially better, and maintenance keeps it there. Both can usually be funded from borrowed money under an LRBA, because they preserve the asset the lender and the trust already hold. Work generally accepted as repairs or maintenance includes: The phrase to hold onto is like-for-like. Replacing a damaged laminate benchtop with laminate is a repair, while swapping it for imported stone as part of a full redesign drifts into improvement territory. Improvements An improvement makes the asset substantially better than its original state, adding something new or lifting the property beyond restoration. Improvements are not banned while the loan runs, but they cannot be paid for with borrowed money, so the fund must use its own accumulated cash. Work that typically counts as an improvement includes: Take a realistic example. A trustee couple own a geared three-bedroom rental in their fund and want to modernise the dated but functional kitchen and add a deck to lift the rent. Both are improvements, so both are fund-cash-only. If the fund holds enough cash after loan repayments and liquidity needs, the works can proceed. If not, they wait. What the couple cannot do is increase the loan to pay for them. Different Assets The third line is the one trustees most often miss. Even improvements funded entirely from the fund’s own money must not change the character of the asset so much that it becomes a different asset. The LRBA was set up over one single acquirable asset, and it must stay that asset until the loan is repaid. Changes generally regarded as creating a different asset include: The reason is structural. The holding trust holds a specific asset, and the lender’s limited recourse attaches to that specific asset. Subdivide the title and the trust suddenly holds two assets where the law permits one; convert the house into a childcare centre and the asset originally acquired no longer exists. Either way, the arrangement stops satisfying the borrowing exemption. Once the Loan Is Repaid These restrictions are tied to the borrowing, not to SMSF property ownership itself. Once the LRBA is paid out and the property transfers from the holding trust into the fund’s direct ownership, the single acquirable asset rule and the funding distinction no longer apply. The fund still has to meet the usual superannuation rules, the sole purpose test, arm’s length dealings and the investment strategy, but the structural handcuffs come off. That makes development and subdivision genuinely workable as post-payout strategies. A fund that has cleared its loan can, in principle, subdivide the block, build a second dwelling or redevelop, provided the works are funded without new borrowing against that asset and fit the fund’s documented investment strategy. Some trustees plan around this sequence, directing contributions and rent toward the loan, then carrying out the value-add works once the debt is gone. Property held outside super faces none of these limits, and an investor can renovate and extend freely with borrowed funds, which is one reason major projects often suit personally held property financed through a construction loan rather than an SMSF structure. Related-Party Builders and Arm’s Length Terms Plenty of trustees are builders, or are married to one, and it is natural to want to do the work through your own company. That is possible, but the arrangement must be genuinely arm’s length, with market-rate quotes, proper invoices, written contracts and payment at commercial terms.