Partial discharge of a mortgage: how to sell one property or lot without paying the whole loan out

You’ve got one loan and three titles. A buyer has just offered a fair price on one of them, and you’d like to take it without repaying everything you owe. That is what a partial discharge of mortgage is for. The lender keeps its mortgage over the properties you’re holding and signs a release for the one being sold.

It sounds routine, and the registry side is. The part that trips people up is the money: what the lender wants paid at settlement, and whether the security left behind still looks safe to it.

How does a partial discharge of mortgage actually work?

One mortgage can be registered over more than one title. When one of those titles is sold, three things have to line up at settlement:

1. The buyer’s funds arrive, usually through an online workspace such as PEXA.
2. The lender is paid its release price out of those funds.
3. The lender signs a release of the mortgage over that title only, which is lodged and registered so the buyer gets a clear title.

The mortgage and the loan carry on over the remaining properties. The debt doesn’t drop to zero; it drops by the amount you paid.

The registries are built for this. In Western Australia, Landgate describes a discharge “partial as to land”, which releases part of the mortgaged land while the whole debt stays secured over the rest, and it notes that a discharge can’t be partial as to land and partial as to money at the same time (see Landgate’s guide). In Queensland, the release of mortgage form has a partial-release option so a mortgage over several lots can be released over just one. Every mortgagee has to join in and sign.

That last point is the real message: the registry will lodge it, but the lender decides whether to sign.

How does the lender set the release price?

There’s no statutory formula, so the number comes from your loan documents or from negotiation. In practice, lenders reason like this:

• The title’s share of the security. How much of the loan is this property supporting?
• What’s left afterwards. Once it’s gone, does the remaining security still cover the balance with a sensible buffer?
• Sale proceeds. The minimum payment is often a fixed share of the net proceeds, and it can be more than the property’s proportionate slice of the loan, because the lender is protecting the cover on the titles still held.

A development or residual-stock facility often sets this out in advance as a release schedule: lot one releases on payment of one figure, lot two on a higher one, and so on. If your documents have no schedule, ask for the release price in writing for each title before you sell.

Illustrative example

Illustrative only. A builder borrows $1.2m secured over three completed townhouses, each worth roughly $700k. The loan sits at about 57 per cent of the combined security. One sells for $720k. If the lender asks for the whole net proceeds, say $690k, the loan falls to around $510k against two remaining townhouses worth $1.4m, which is a much stronger position for the lender. If instead it only asked for the loan’s one-third share, $400k, the loan would be $800k against $1.4m, leaving the cover thinner. Lenders usually land between the two. The point: the figure is about the security left behind, not what feels proportionate.

What happens to the remaining loan after one title goes?

The balance is lower, the number of titles is smaller, and the lender looks at the new ratio. Three outcomes are common:

• Business as usual. Cover is comfortable, the term and interest arrangement continue, and the next sale follows the same process.
• A tighter schedule. The lender raises later release prices, so the final titles repay what’s left faster.
• A reassessment. If the remaining property is weaker (a vacant lot, a single commercial title, a harder sale), the lender may ask for a new exit plan or a shorter timeframe.

This is why the order of sales matters. Sell the strongest title first and the last one has to carry the debt on its own. Sell evenly and the remaining security stays balanced. If the loan is a private one, the exit strategy is part of the original assessment, so show the lender your selling order up front.

What should you sort out before you sign a sale contract?

A contract of sale puts a settlement date on you. A release price you haven’t confirmed can make that date impossible. Before exchange:

1. Get the release price in writing for the specific title, including any fee.
2. Check the loan documents for a release clause, a cross-default clause and any “all monies” wording that ties the mortgage to other debts with the same lender.
3. Work out the shortfall. Subtract your expected net proceeds (after agent’s commission, legal costs and any GST payable) from the release price. If there’s a gap, you need a plan.
4. Tell your solicitor so the settlement statement, the payout figure and the release documents are prepared together.
5. Give the lender a realistic notice period. Manual release processes can take several business days.

If you’re selling a lot in a development, add one more check: that the lot is separately titled, or will be by settlement. A lender can’t release part of a title that doesn’t exist yet.

If the debt is GST-sensitive, your accountant should confirm how GST affects the proceeds that are left after the release; our guide to GST and the margin scheme covers the basics.

What if the proceeds don’t cover the release price?

This is the settlement trap. A buyer offers less than hoped, or costs come out first, and the net proceeds are short of the figure the lender needs. The title can’t be released until the gap is filled.

Your options are:

• Top up from the business. Cash from trading, if you have it.
• Renegotiate with the lender. A lender may accept a smaller payment if the remaining security is strong, or restructure the schedule.
• Borrow against another property. A short second mortgage or other secured funds over a property outside the existing loan can bridge the shortfall, then repay from the next sale.
• Move the sale. Renegotiate the price or the settlement date with the buyer.

If you can see this coming, start the conversation well before settlement. Lenders respond better to “here’s my plan” than to “we’re short on the day”.

How is this different from a cross-collateralised bank loan?

The mechanics are the same, but the people and pressures differ. With a bank, the question is usually about freeing a single property to borrow against, which we cover in cross-collateralised loans: how to free one property. Here, the subject is selling one title out of a facility and keeping the loan alive for the rest, which is the everyday reality for property developers and owners with a multiple-property security arrangement.

How do developers plan lot-by-lot releases?

Treat the release schedule as part of your cash flow, not an afterthought:

• Map each lot’s likely sale price and timing, and the release price against it.
• Check the early lots carry their weight. If the first sales release lots at a low price, the last ones carry the debt.
• Keep holding costs in view. Rates, land tax and interest keep running while you wait; our guide to land tax for developers is worth a read.
• Know your fallback. If sales slow, a residual stock loan secured over finished property can give you time instead of a discount sale.

What do you need to have ready?

A partial discharge goes faster when you hand the lender a clean file:

• The loan agreement and mortgage details, and any release schedule.
• The executed or draft contract of sale.
• Your solicitor’s contact details, and the buyer’s solicitor if known.
• A current payout figure request.
• Your plan for the remaining titles.

Our guide to what happens at settlement shows the money trail on the day, and the glossary entry on discharge of mortgage explains the paperwork.

Need funds to bridge a release or free up a property?

If a sale is stalling because a release price is higher than the proceeds, or you want to borrow against one title without disturbing the others, a property-secured loan may fill the gap. Check your options here and tell us what’s secured where.

Ready to find out where you stand?

Selling one title out of a multi-property loan is a timing and cover puzzle, and it’s easier to solve before contracts are signed than after. If you’d like a specialist to look at your titles and your exit, see if you qualify.

It takes about 60 seconds, and there’s no credit check when you enquire, so asking won’t touch your credit file. We don’t send your details to a pile of lenders: your enquiry goes to one direct lender, and a real person reads your situation and calls you. Please fill in the form accurately, including what’s owing on each property, so we can match the right option first time.

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