Direct private lending · First & second mortgages · No formal valuation · $20k – $5m
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Co-owner buyouts

How to buy out a co-owner of an investment or commercial property

A co-owner wants out of a jointly held rental or commercial building? Fund their share and refinance the joint loan with a private first mortgage.

Updated 11 October 2026 · Secured Business Finance editorial team

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Quick answer

Buying out a co-owner of an investment property means the remaining owner pays the departing owner for their share of the title and takes over the whole property. A short-term private first mortgage over the property, sometimes with another title added, can pay out the existing joint loan and the departing owner in one settlement, without a forced sale. The remaining owner then refinances to a bank or sells later on their own timetable.

Key points

  • Keep a good investment property instead of selling it because one owner wants out
  • One private first mortgage can pay out the joint loan and the departing owner together
  • The departing owner is released from the old joint debt at settlement
  • Duty and CGT apply to the share changing hands; get advice on both before agreeing a price
  • If co-owners can't agree, tribunals and courts can order a sale; a funded offer avoids that
Amounts
$20k – $5m
Term
1 to 24 months
Structures
First mortgage, or second behind an existing loan
Assessment
No formal valuation required

Plenty of investment properties are bought by two or three people together: business partners who buy the building they trade from, friends who pool deposits for a block of units, a brother and sister who buy a shop as a long-term hold. It works well until one owner wants to cash out. They might be retiring, moving interstate, starting another venture, or simply wanting their money back.

The default answer is to sell, but selling a good property you’d rather keep, with agent’s fees, a campaign and possibly a capital gain for everyone, is often the worst outcome. The alternative is for the remaining owner to buy the departing owner’s share. This page explains how that’s funded with a private loan over property, what tax and duty come with it, and how to keep the whole thing calm.

What does a co-owner buyout involve?

There are three moving parts.

  1. The share changes hands. The departing owner transfers their interest in the title to the remaining owner, or to the remaining owner’s company or trust.
  2. The joint loan is dealt with. Most co-owned properties carry a loan both owners signed. The departing owner will want to be released from it.
  3. The departing owner is paid. Their share of the equity, as agreed.

A private first mortgage can handle the second and third steps at one settlement: it repays the joint loan and pays the departing owner, leaving one loan in the remaining owner’s name. The title transfer happens at the same settlement.

How should the price be worked out?

Start with what the whole property would sell for today, then:

  • subtract the joint debt;
  • split the remaining equity by ownership share;
  • adjust for anything agreed, such as one owner paying more of the deposit, repairs or holding costs;
  • consider what the departing owner saves by not selling on the open market, such as agent’s fees and a campaign.

Use an agent’s appraisal or recent comparable sales as your common reference, and put the agreed price in writing. The lender’s view of the property doesn’t set your price; it sets how much can be borrowed.

What do duty and tax look like on a co-owner buyout?

Duty. Buying a co-owner’s share is usually a dutiable transfer of that share. Revenue NSW says duty is calculated on the higher of the price agreed and the property’s market value, and lists transactions involving fractional interests among the cases where formal evidence of value is required. Other states differ and some have exemptions, so your solicitor should confirm the figure early and it should be built into the loan.

Capital gains tax. The ATO explains that when an asset is co-owned, each owner makes their own capital gain or loss. Tenants in common own defined shares, which can be unequal, and gains are split by share. Joint tenants hold equal shares. The departing owner’s sale of their share is their tax matter, but it affects the price they’ll accept, so encourage them to get advice before negotiating.

GST. If the property is commercial and either owner is registered for GST, ask your accountant whether GST applies to the share changing hands.

How does the funding usually work?

Situation Structure Notes
Joint bank loan to repay plus the departing owner’s equity Private first mortgage over the property One settlement handles both; 1 to 24 months
Property alone doesn’t support the amount First mortgage over the property plus security over another title See multiple properties as security
Bank will keep the loan in the remaining owner’s name but won’t increase it Second mortgage or caveat behind the bank for the departing owner’s equity Bank consent may be needed
Small balance owed to the departing owner Caveat loan Can later become a registered second mortgage

A second mortgage or caveat ranks behind the bank and generally costs more than a first mortgage.

How does a funded buyout compare with the alternatives?

Option Upside Downside
Remaining owner buys the share with a private loan Keeps the property; settles on an agreed date Short-term loan; needs a refinance or sale exit
Bank refinance into one owner’s name Cheapest if approved Approval may take weeks or be declined
Sell the whole property Clean split Agent’s fees, CGT for both, lose the asset
Bring in a new co-owner No borrowing Finding a buyer for a part share is hard
Tribunal or court-ordered sale Resolves deadlock Costly, slow, and usually ends in a sale anyway

The borrow against property vs sell it comparison looks at the sell-or-hold decision in more depth.

What if the co-owners can’t agree?

Deadlocks happen. In Victoria, VCAT hears applications for the sale or division of co-owned land under the Property Law Act 1958. It deals with disputes where one owner wants to sell and the other doesn’t, where owners disagree on how to sell, on how to split the net proceeds, or on accounting for rent received and expenses paid. Only a co-owner can apply. Other states have their own court processes.

Those processes usually end in a sale. A remaining owner who arrives with funding already approved can often settle the matter by agreement first, which saves both sides time and legal fees.

Who does a co-owner buyout suit?

It suits:

  • business partners who jointly own their premises outside the business structure;
  • friends or relatives who jointly hold an investment property and one wants out;
  • investors who want to keep a well-leased asset rather than sell it;
  • co-owners who need the departing party released from the joint loan on a fixed date.

It doesn’t suit:

  • separating spouses or de facto partners, whose property settlement is a personal family law matter outside what we fund;
  • remaining owners who couldn’t carry the property alone even after a refinance;
  • buyouts where the price isn’t yet agreed.

When is a private loan the wrong way to buy out a co-owner?

  • Your bank will refinance in time. If the bank can release the departing owner and lend you the extra on the agreed date, it’s usually cheaper.
  • The property’s rent can’t support a bank refinance. If no bank is likely to lend on your own figures later, the short-term loan has no exit. Selling may be better.
  • The other owner hasn’t agreed. Funding a buyout that’s still being fought over leaves you paying for time.
  • The duty or tax makes the deal uneconomic. Run the numbers with your adviser first.

What it costs (without the guesswork)

Pricing turns on the security, LVR, term and exit of each deal, with the aim of the sharpest price your situation allows. Expect:

  • interest, which may be prepaid or added to the loan so no monthly repayments are due, or paid monthly;
  • an assessment fee, which is set loan by loan and appears in the Letter of Offer;
  • legal, transfer and registration costs, and a discharge cost when you refinance.

There’s no formal valuation required, so the buyout timetable isn’t held up waiting for a third-party report.

Illustrative example: a two-way split on a commercial unit

Illustrative: two Canberra physiotherapists own the strata unit their practice leases as tenants in common, half each. They agree it’s worth about $1.6m and owe $560k jointly to a bank. One is relocating interstate and agrees to sell her half for $520k (half of $1.04m equity). At an illustrative 70% LVR band the unit supports total secured debt of about $1.12m.

Item Amount
Private first mortgage over the unit $1,120,000
Repay the joint bank loan $(560,000)
Paid to the departing co-owner $(520,000)
Duty, legal and registration costs $(25,000)
Illustrative allowance for capitalised interest and fees $(15,000)

The remaining owner capitalises interest for six months while a bank reviews her finances and the lease, then refinances the unit in her own name. The departing owner is released from the old joint loan on settlement day.

The figures are round and illustrative only.

Key terms in a co-owner buyout

  • Tenants in common: co-owners with defined shares, which can be unequal and can each be sold or left in a will separately.
  • Joint tenants: co-owners with equal shares and a right of survivorship.
  • Joint loan: a mortgage both owners signed; each is usually liable for the whole debt, which is why a departing owner wants it repaid.
  • Release: the departing owner being freed from the joint loan, normally by repaying it at settlement and registering a discharge of mortgage.
  • Transfer of share: the title document moving the departing owner’s interest to the remaining owner.

If the bank holding the joint loan won’t let the remaining owner take it over alone, our page on refinancing when the bank says no explains how a private first mortgage bridges to a later bank refinance. For keeping the bank loan and adding funds behind it, read the guide to a second mortgage on an investment property.

Documents you’ll need

  • The signed agreement on the price and how costs are shared
  • Title details and the current statement for the joint loan
  • Leases and rent roll, if tenanted
  • Photo ID for both co-owners and any guarantors
  • Company or trust details if either owner holds through an entity
  • Evidence of the exit, such as a bank’s indication or a plan to sell another asset

How long does a co-owner buyout take?

Once documents are in, loans up to $5m can be possible within 24–48 hours. The decision is rarely the slow part. Agreeing the price, the transfer documents and each party’s advice usually set the pace. ACT owners can read about private lending in Canberra. If you’re releasing equity from a rental for another purpose instead, see releasing equity from an investment property, and if your co-owner is a partner in the business itself, see buying out a business partner.

Agreed a price with your co-owner? Tell us the property, the loan and the figure and a specialist will set out how it can be funded.

Ready to take over the whole property? See if you qualify

You can find out where you stand without a credit check. Your enquiry goes to one direct lender, not to a list of others, and an experienced specialist reviews it personally. fundU, the direct lender behind this site, decides on the property and your exit.

Give us the agreed price, the joint loan balance, any other loans on the title and what the property earns. With the facts right first time, the answer you get is one you can plan around. Start your enquiry.

Frequently asked questions

My business partner and I bought a $1.4m commercial unit as tenants in common, half each. He wants out and we owe $500k jointly to the bank. Can I buy his half?

Yes, if the numbers work. A private first mortgage over the unit can repay the joint $500k bank loan and pay your partner for his share, leaving one loan in your name or your entity's. If the unit alone doesn't support the amount, another property you own can be added as security.

How do we agree the price for the share?

Usually by reference to what the whole property would sell for, less the joint debt, split by ownership share, with adjustments for anything agreed such as one owner having paid more of the costs. An agent's appraisal or recent sales evidence helps. Agree the figure in writing before funding is arranged.

Does stamp duty apply when I buy my co-owner's share?

Usually, on the share being transferred. Revenue NSW, for example, assesses transfer duty on the higher of the price paid or the market value, and asks for formal evidence of value when fractional interests are involved. Other states have their own rules and some exemptions, so ask your solicitor.

Will my co-owner pay capital gains tax on selling me their share?

Possibly. The ATO says each co-owner makes their own capital gain or loss, split by ownership share for tenants in common. The departing owner should get tax advice before agreeing the price, because the tax can affect what they'll accept.

We hold the property as joint tenants, not tenants in common. Does that change things?

Joint tenants hold equal shares, and the ATO notes that on a joint tenant's death the surviving joint tenants acquire their share. For a buyout while both are alive, the departing owner transfers their interest and the remaining owner becomes sole owner. Your solicitor will handle the transfer.

Can the bank just take my co-owner off the existing loan?

Sometimes, but the bank will assess whether you can carry the whole loan alone, and that can take time or fail. A private first mortgage that repays the joint loan settles the release on a known date, with a bank refinance later.

My co-owner won't agree to sell or to be bought out. What can I do?

Co-owners can ask a tribunal or court to order a sale or division. In Victoria, VCAT hears applications to sell or divide co-owned land, including disputes over how to sell and how proceeds are split. A funded offer to buy the other owner's share is often a faster, cheaper way to resolve it.

Is this the same as buying out a business partner?

No. Here you are buying a share of a property title. Buying a partner's shares in a company or their interest in a partnership is a different transaction, with different documents and duty rules.

The property is tenanted. Does the lease cause a problem?

No. The tenant stays and the rent continues to the new sole owner. The lease and rent roll help the lender and your future bank see that the property supports the exit.

Can interest be capitalised so I'm not paying while I refinance?

Yes. Interest can be prepaid or capitalised, arranged per deal, so there may be no monthly repayments during the term. The rent can then go towards other costs.

What if I can't refinance to a bank by the end of the term?

Plan a second exit from the start, such as selling the property or another asset. Talk to the lender early if the bank is slow. Terms run from 1 to 24 months on a first mortgage.

My co-owner is my former spouse. Is a buyout covered?

These loans are for business purposes. A family law property settlement between former partners is a personal matter and outside what we fund, even if the property is an investment.

How quickly can the buyout settle?

With documents in hand, loans up to $5m can be possible in 24–48 hours. The steps that take longest are agreeing the price, the transfer documents and the departing owner's own advice.

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