Selling With Your Neighbours in Adelaide: Splitting the Price Between Titles, and What Happens If One Owner Pulls Out

General information only for South Australian landowners, not legal, tax, valuation or agency advice. In a group sale every owner needs their own solicitor for the contract, the option, the disclosure and the title work; their own accountant for GST, CGT and land tax; and a registered valuer for what a title is worth alone and inside an assembled site. Consumer and Business Services, RevenueSA, PlanSA and Land Services SA hold the current position on agency, duty, planning and titling respectively.

The letters usually arrive within a week of each other. Three or four adjoining owners on a corridor — Prospect Road, Port Road at Croydon, Henley Beach Road at Torrensville, Magill Road through Norwood Payneham & St Peters — get the same approach from the same developer. What follows is a negotiation between people who have shared a fence line for twenty years and never had to talk to each other about money.

The developer's number is not the hardest part of this. The hard question is internal: if the assembled site is worth more than the sum of the blocks, how is that extra value split between the neighbours who created it — and what happens to the rest if one owner pulls out late.

Cyberate PM is engaged by the owner, or here by the owners. We are not paid on the transaction, not paid by the developer, and not a land agent. We do not value your title, advise on the option or contract, determine anyone's tax position, or decide the split. We coordinate: keeping a group informed at the same time and to the same standard, and helping the group get its process questions settled — by its own advisers — before the price arrives.

If you are still deciding whether to sell at all, as against developing or partnering, start with the sell, develop or partner comparison.

Why the developer wants the three of you together

The reason an assembled site beats its parts is geometric, not financial. Adelaide's inner-ring corridors are lined with allotments laid out for a single house: narrow at the street, long at the back. The higher-density outcomes contemplated by the relevant zone under the Planning and Design Code want what one narrow title cannot physically provide — frontage enough to organise a building and its entry, width enough to get vehicles in and out, depth enough to hold setbacks and landscaping without eating the yield.

Put two or three of those titles side by side and the site stops being a constrained sliver. The efficiency does not rise in a straight line; it steps. That step is the assembly premium, and no owner produces it alone — it exists only if every title comes across. Which is why the letters went out together, and why an assembly is only as certain as its least-committed title.

Whether the offer reflects that premium is a question for a registered valuer instructed by the group, not the buyer; the method behind the figure is set out in how a developer arrives at the price they offer.

The split is the group's problem, not the buyer's

This is where most Adelaide group approaches go quiet. The developer offers a pooled figure, or individual figures that add to one, and presents the allocation between neighbours as a detail. It is not a detail. Until it is settled a group can struggle to negotiate as one, because nobody knows how an improvement in the pooled price would be shared. Concessions the buyer asks for can then land unevenly, and in the group approaches we have coordinated it is usually the owner they fall hardest on who slows the process down.

Four methods come up. Each is an option to instruct your own advisers on rather than a recommendation, and none is fair in the abstract; each moves value between neighbours in a different direction.

Equal shares. Every title takes the same amount regardless of size, shape or position. Fast, transparent, and it keeps neighbours on speaking terms. Because it sets aside everything that distinguishes one title from another, the question a group considering it usually puts to its registered valuer is what those differences amount to here — including where the access the scheme depends on physically sits.

By land area. Shares proportional to allotment area. It feels objective, and in our own engagements it is usually the first method a group reaches for. Its weakness is that it treats every square metre as interchangeable, and it says nothing about which title carries an easement, a regulated tree or a heritage listing — whether interchangeability holds on a particular site is for the group's valuer to address, not for the owners to assume either way.

By independent standalone value. Each title is valued by a registered valuer as if the assembly were not happening, and the premium above the sum of those values is shared by a separately agreed rule. This splits two questions — what your property is worth today, and what the assembly adds — and narrows the disagreement to the second, at the cost of a valuation for every title and a separate negotiation over the premium rule.

By contribution to the assembled scheme. Each share reflects what the title enables: the frontage it brings, the access it unlocks, the constraint it removes. It is the hardest of the four to run, needing a design-led view of a site nobody has designed yet, and what any of those contributions is worth is a valuation question the group would have to put to a registered valuer rather than settle among themselves.

One place the difference between them shows up sharply is the corner. On an assembly running back from a corridor into a side street, one title usually carries the secondary frontage that makes vehicle access work; take it out and the rest may not function. Measured by area that title might be the smallest in the group; measured by contribution it may be the title the scheme is built around. Which reading a group adopts is a question for the owners, on their valuer's and their solicitors' input — not something an outsider can settle for them.

Two process questions tend to matter more than the choice of method. The first is timing. Before anyone can calculate their own share, nobody knows which rule favours them, so the method can be argued on what it does rather than on what it pays; once the arithmetic becomes visible, an owner can find their own preference shifting between area and equal shares. In the group work Cyberate PM has coordinated, settling the method early has made that conversation easier to hold — that is what we have seen across our own engagements, not a finding about groups in general, and we make no claim about what it does to the odds of a group agreeing. The second is where the method is recorded. An owners' agreement prepared with legal input, standing separately from the developer's document — which governs the sale, not the split — is one structure owners commonly raise with their solicitors.

One-out-all-out, and what linkage costs you

In the group approaches we see, the sales are almost always linked: a buyer is unlikely to commit to two of three titles, because two of three is not a development site. So each owner's sale is drafted conditional on every other owner's completing — one-out-all-out.

Understand what you accept by signing into it. Your sale, on your title, can now fail for reasons that have nothing to do with you — a neighbour's title defect, estate or change of heart — while your property sits off the market and you carry rates, insurance and land tax.

Without linkage there is often no deal, so this is not an argument against it; it is an argument for specific questions to your solicitor. What triggers termination, and does it operate for every party or only the buyer? If one owner drops out, can the buyer proceed on a reduced site at a reduced price, and who absorbs it? Is there a date after which every owner is released?

The holdout, and why you deal with it early

Every group fears the same scene: everyone agreed, documents with the solicitors, one owner declining to sign unless their share rises. Sometimes that is opportunism. In the approaches we have seen it is more often duller — a spouse never really consulted, an owner who cannot find a replacement home nearby, an estate that cannot move as fast as the others.

The uncomfortable part is that a group cannot plan on pressure. A neighbouring developer, and a group of adjoining owners, has no power to compel another freehold owner to join a sale; an owner who has not signed cannot be brought into one by the others agreeing, so a group counting on pressure eventually working is planning around a hope. What any particular owner is or is not already committed to — by an option, a linked contract, a heads of agreement, or obligations owed to a co-owner or a trust — is a question for that owner's solicitor.

What a group can do is put the questions early: establish that every decision-maker on every title is genuinely willing, that estates and trusts have someone able to act, and that anyone needing a replacement home has thought about what and where. Settling the allocation method before the figure is known, and making it easy for an owner to say out loud that they are hesitant, guarantees nothing — before anything is signed an owner remains free to change their mind, and some do; once an owner has signed, where they then stand is governed by what they signed, and that is a question for that owner's solicitor. What it does is give hesitation somewhere to go while there is still time and room to deal with it, rather than leaving it to arrive closer to settlement, when the group has fewer options.

Who speaks for the group, and who pays for the shared work

In the group approaches Cyberate PM has coordinated, four owners asking four separate sets of questions get four different levels of detail back: the most confident owner ends up best informed, and the group's position drifts toward whoever talks most. What we have seen work in our own engagements is a single point of contact who receives everything from the buyer, distributes it to every owner at once, and carries questions back. That is our practice rather than a rule about how a group ought to organise itself; whether it suits a particular group is for the owners. Two boundaries make it workable. A contact for information is not an agent to negotiate or bind anyone, and any authority actually given needs documenting by solicitors. And ask who pays whoever coordinates and on what trigger — and of any agent, whom they act for.

Representation is worth settling deliberately rather than by default, because the owners in an assembly share an interest in completing and compete over dividing the proceeds. Before any retainer is signed, each owner is well placed to ask an independent solicitor how they should be represented in a sale of this shape and what conflicts can arise where one solicitor acts for more than one owner in the same assembly — that solicitor answers it under their own conduct rules, and the question is easier to ask at the retainer stage than at the point the allocation is being argued.

The group also needs work that benefits everyone — valuation, a planning view of what the assembled site can support, title searches, the owners' agreement. How that cost is shared, who bears it if nothing settles, and whether reports are commissioned jointly are all worth putting in writing. Who pays for a report and who instructs it are not necessarily the same person, and paying does not by itself decide whose purposes the report serves: a report the buyer funds may be prepared on the buyer's instructions, on instructions given jointly, or on terms that address it to the buyer alone and say nothing about the owners at all. Who the author is engaged by, who is entitled to rely on the finished report, and what the group is given access to are questions for the owners' own solicitors and for the author's engagement terms — better settled before an offer to fund a report is accepted than after it arrives.

Tax is the shared question that is not shared at all. GST treatment, whether a sale is on capital or revenue account, and how CGT falls differ between owners in the same assembly depending on holding period, main-residence history and the owning entity — so a structure that suits one neighbour can be worse for another. The general interaction is outlined in how CGT, income tax and GST fit together on land sales; your own answer belongs to your accountant.

The document you will most likely be handed

Group approaches rarely open with a contract of sale. More often it is an option — commonly a call option, sometimes a put and call — running for a long period, under which the buyer acquires a right to require the sale later while the group is bound now. The asymmetry is inherent in the instrument — an option is a right on one side and a commitment on the other. That is what it is for, and it is why the terms of the right matter more than the headline number.

Read it with your solicitor for how long the buyer's right runs and whether it can be extended; what the buyer must do in that period as against what they merely may do; whether their obligations are conditional on planning, funding or their own satisfaction, which is very different from a commitment; whether they can assign the option or nominate another entity to complete; and what the group receives, if anything, while the land is tied up. Reading a developer-drafted document for where the obligations sit is the habit set out in the red flags in landowner agreements checklist.

Two further points are your solicitor's. South Australian vendor disclosure obligations, and any cooling-off rights attaching to a transaction of this kind, depend on the parties, the property and the structure — and an option is not the same instrument as a contract for those purposes. Duty consequences, including on options and nominations, are for your solicitor and RevenueSA's current material. And where completion is conditional on the buyer obtaining a planning approval, the group is lending its land as the site for someone else's approval risk; what an approval does to value is discussed in selling with approval versus without.

How Cyberate PM handles this on your project

Our role is narrow, and deliberately not the roles that matter most. We do not value any title, alone or in an assembly — that is a registered valuer's. We do not draft, advise on or negotiate the option, the contract, the owners' agreement or the disclosure — that is each owner's own solicitor's. We do not determine anyone's tax position, we are not a licensed land agent, and we do not propose the allocation between neighbours.

What we do is coordinate, so the group decides on the same information at the same time. We help the owners work out which questions have to be answered before a number is discussed, and in what order; we coordinate the independent inputs the group commissions so they are instructed jointly and arrive as one picture rather than four conversations; and we keep documents and timelines organised across several owners and solicitors. We do not tell anyone whether to sell, or on what terms.

Frequently asked questions

How is the money split when neighbours sell to a developer together? There is no default rule and no standard formula. The methods that come up are equal shares, land area, independent standalone valuation with the premium shared separately, or each title's contribution to the assembled scheme. Each moves value between neighbours differently, and the choice belongs to the owners with input from a registered valuer and each owner's own solicitor.

Can my neighbours force me to sell if everyone else agrees? No. There is no mechanism by which a majority of adjoining freehold owners compels another freehold owner to join a sale. Whether you are free to decline depends on what, if anything, you have already signed — an option, a linked contract or a heads of agreement can each change that, and only your own solicitor can tell you where you stand. What can happen without any of that is that your decision causes the whole transaction to fail, because the documents are usually linked.

Should all the owners use the same solicitor to save money? That is a question to put to an independent solicitor before anyone signs a retainer. Owners in an assembly share an interest in completing and compete over dividing the proceeds, and those interests diverge the moment allocation is discussed — so ask an independent solicitor how you should be represented and what conflicts arise where one solicitor acts for more than one owner in the same assembly, which that solicitor answers under their own conduct rules. Shared technical reports are a different matter and can sensibly be commissioned jointly.

What is the difference between an option and a contract here? Broadly, a contract of sale commits both parties on agreed terms; an option gives one party a right to bring a sale about later. Group approaches often use long-dated options because they tie up several titles while the buyer pursues planning and funding without committing to complete. The legal consequences — disclosure, cooling-off, duty — differ between the two and are for your solicitor.

If you and your neighbours have been approached together and want every owner seeing the same information at the same time, with the valuation, planning and legal questions instructed in the right order, we can coordinate the owner-side of that. We are not paid on the transaction, and we do not value your land, advise on your contract or decide the split. Book a free consult.