Buying the Neighbour’s Block: When Land Assembly Adds Value

Neighbouring blocks can create a more workable development site, but buying the next house does not automatically create a premium. The assembled land must support an improved, feasible use whose additional value exceeds acquisition, coordination and delivery costs.

Joey’s July site video draws attention to a practical feature. Translated from Chinese: there is a broad driveway between the houses. That observation can generate a design question. It does not establish ownership of access, planning permission or a guaranteed development value.

Identify what the combined site actually improves

Start by drawing each parcel separately. Then test the combined boundary. Does it improve vehicle access, building placement, usable frontage or the relationship between homes and outdoor space? Does it avoid duplicating an accessway, or merely create a larger site with the same constraints?

Ask the planner to identify the applicable residential provisions and the type of proposal being tested.1 A residential scheme, a childcare use and another commercial use have different demand, design and approval questions. Do not transfer a valuation from one possible use to another.

Verify the driveway and title position

Obtain both titles, subdivision plans and relevant instruments. A visible shared-looking driveway may sit entirely on one title or depend on an easement. Check legal access, beneficiaries, restrictions, mortgages and any agreements with the conveyancer.23

Do not assume that removing a fence removes a legal boundary or an easement. Existing section 173 agreements can also affect development and ongoing obligations.4 Mark every unresolved title issue before deciding what the assembled land could be sold as.

Commission a dimensioned concept for both scenarios

Use surveyed levels, trees, buildings and services. Compare a development on each separate parcel with an assembled scheme, using the same assumptions about dwelling quality, parking, landscaping and other applicable requirements. Identify what additional saleable or usable product the combined design actually creates.

Test construction access and staging as well as the finished layout. Retaining an existing home can preserve income in one scenario but obstruct access in another. An extra dwelling on a sketch has no commercial value until the requirements and costs behind it are understood.

Agree the ownership process before relying on cooperation

Where owners will pursue a joint scheme, have a lawyer document decision rights, who pays for investigations, how advice and plans may be used, and what happens if an owner withdraws. Clarify authority to access land and submit applications. An informal conversation with a neighbour does not settle these matters.

If a later purchase, option, nomination or new ownership structure is contemplated, obtain transaction-specific legal and tax advice before committing. Land transfer duty must be included in the acquisition analysis; it is not safe to treat the neighbouring purchase as a cost-free extension of the existing holding.5

Calculate the incremental benefit

Prepare two complete feasibility cases: separate parcels and the assembled site. Compare realistic sales or holding outcomes after construction, services, professional fees, finance, duty, other applicable taxes, selling expenses and contingency. Avoid counting the same land uplift in both the sale proceeds and the project profit.

Then stress-test delay, an owner withdrawing, a less intensive planning outcome and lower end values. Borrowing remains repayable even if the expected development premium does not eventuate.6 A larger site can concentrate more money in one uncertain project.

Keep permits, construction and title registration separate

Consolidation, planning permission for development and later subdivision are not interchangeable. Identify the required steps for the intended outcome, including the building process and any separate title creation.78 Do not price the land as several completed titles merely because a planning concept shows several homes.

Our VicSmart four-home guide, project-cost checklist, Hampton Park planning update and profit-versus-equity explanation help organise the next questions. Start the land review with planning overlays and title due diligence.

Questions buyers ask

Do two neighbouring houses always sell for more as one development site?

No. Any premium depends on the feasible combined use, demand, approvals, cost and the terms on which the properties can be assembled.

Can I assume the space between the houses is shared legal access?

No. Check the parcel boundaries, easements and title instruments. Physical appearance does not establish access rights.

What is the most useful first paid investigation?

A coordinated title review and measured planning concept that compares separate and combined scenarios. The appropriate scope depends on the property and should be agreed before larger commitments.

Source videos and verification scope

This article develops practical questions raised in the published videos below and checks them against the sources cited here. Case prices, forecasts and broad claims in a video do not establish the result for another property.

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