Building Across Lot Lines? Why Builders Ask for a Plan of Consolidation First

Before construction begins on a new house, commercial building or development, the builder needs more than architectural drawings and materials. They also need to understand the legal layout of the land.

This matters most when an owner wants to build across two adjoining lots they own. If the design crosses the boundary between two separate titles, further planning may be needed before any work starts. One step to consider is consolidating the titles, which combines two or more eligible lots into one.

Key Takeaways

• A plan of consolidation merges two or more eligible lots into a single lot.
• Consolidation may be worth considering when a proposed development crosses title boundaries.
• Consolidation is not mandatory for every project involving adjacent land.
• In Victoria, a licensed surveyor must prepare the plan.
• Planning requirements, easements, restrictions and other property matters can all affect the plan.
• Set out surveys transfer approved design positions onto the site but do not change titles.
• Reviewing the land arrangement early helps identify issues before they become costly.
• Owners should seek surveying, planning and legal advice.

What Is a Plan of Consolidation?

A plan of consolidation is used to merge two or more lots into one. In Victoria, these plans are prepared and lodged under the Subdivision Act 1988. According to Land Use Victoria, a plan can merge two or more adjacent lots into a single lot, and only a licensed surveyor can prepare it.

For an owner, consolidation is worth considering when adjoining lots are to be treated as one development site. For example, if you own two lots and want to build a larger structure across the boundary, you will need to check whether consolidation is required to treat them as one lot.

That said, consolidation is not necessary in every case involving adjoining land.

Why Do Builders Ask About Consolidation Before Construction?

Builders need to know exactly where a proposed building sits in relation to the property boundaries and the approved plans. Building across existing title boundaries is not always advisable and can raise issues that are best resolved before construction starts.

Establishing the Legal Boundaries

Two properties can look like a single site, particularly when they share driveways, gardens or open space. Appearances can mislead. Owning both blocks does not make them one property, and the only way to be sure is to review the titles and survey information.

Preventing Problems During Construction

If a building is proposed across two separate titles, it is wise to investigate whether permission is available and whether the titles need to be consolidated at all. Discovering a problem during foundation work can cost owners and builders both time and money.

Integrating Design and Approval Requirements

A plan of consolidation deals with the legal land layout. It does not remove other approvals that may apply. Depending on the project, planning approvals, building permits, easements, restrictive covenants and other interests in the land may still need to be addressed. The proposed building and its approvals must also fit the planned land layout, because consolidation does not give automatic approval.

When Should Property Owners Consider Consolidating Titles Before Building?

Consolidating titles before building can help when a development treats adjacent titles as a single lot. Common situations include:

• Building a structure across an existing title boundary
• Developing two adjacent residential lots at the same time
• Developing a commercial property that spans several lots
• Combining adjacent lots to create a more practical development site
• Reviewing individual titles before finalising a construction plan

Whether consolidation is appropriate depends on the circumstances. In some cases it supports the project, while in others adjusting the development plan may be the better option. A surveyor can assess the current land information, and planners and lawyers can advise on the requirements.

How Does the Consolidation Process Work?

The exact process varies with the property and the project, but most cases involve these steps.

Step 1: Review the existing titles. The owner and relevant professionals examine the titles, registered plans, easements, restrictions and other documents. This shows how the parcels are currently defined and highlights anything that could affect consolidation.

Step 2: Assess the proposed development. The proposal is evaluated to understand why consolidation is needed. Owners may need to consult a building designer, planner, conveyancer or lawyer to confirm the arrangement and the permissions required.

Step 3: Engage a licensed surveyor. The surveyor reviews the land information and determines the work needed to prepare the plan. This usually includes examining survey records, assessing parcel boundaries and carrying out measurements. Greater Melbourne Surveyors is one team of licensed land surveyors in Melbourne that can assist at this stage.

Step 4: Resolve outstanding issues. In some cases, planning approvals, consents, easements or restrictions must be dealt with before the plan can be registered. Requirements differ from project to project and should be clarified individually.

Step 5: Prepare and register the plan. Once the necessary steps are complete, the plan can be registered. Owners should confirm that the appropriate registrations and building permits are in place before acting on the plan. Land Use Victoria is the official authority providing guidance on plans of subdivision and consolidation.

Where Do Set Out Surveys Fit Into the Process?

Once the land arrangement has been reviewed, builders still need accurate information on where the building will sit. This is where set out surveys come in.

Setting out means marking points from the construction plans onto the ground. Depending on the project, these may include building corners, foundation points, structural grid points, column points and wall points.

A set out survey lets the construction crew work from the correct design points without altering legal boundaries or merging separate properties. For that reason, the land arrangement and related approvals should be settled before the crew uses the set out marks. Where consolidation is involved, close coordination between the surveyor, designer, builder and other professionals is essential.

What If Consolidation Is Not Necessary?

Consolidation is not the only option for developing adjoining properties. Depending on the project, an owner may be able to revise the building layout so it stays within a single parcel, or another suitable arrangement may be available. Any alternative must still be checked against title, planning, building and other requirements.

Do not assume that common ownership removes the need to consider separate title boundaries. Before changing a design or starting construction, seek advice from the relevant professionals about your options.

Benefits of Addressing Title Issues Early

Sorting out land questions before work begins makes planning smoother. The main advantages are:

• Better property information: Reviewing titles and survey records clarifies how the land is formally arranged.
• Better design coordination: Architects, designers and builders can check the building location against parcel boundaries.
• Early problem identification: Easements, restrictions and other issues can be dealt with before they cause trouble.
• Informed decisions: Owners can compare consolidation with other approaches before committing to major work.
• Smoother construction preparation: Once the land arrangement is clear, surveying and setting out are simpler.

This will not eliminate every development risk, but it will reduce many of them.

Conclusion

Building across adjoining properties can create opportunities for larger or more practical developments, but the existing title arrangement should not be overlooked. Understanding whether a plan of consolidation is appropriate before construction begins can help property owners and builders identify potential issues and plan the next steps with greater confidence.

By reviewing titles, investigating relevant restrictions, obtaining the necessary professional advice, and coordinating surveying with the approved construction plans, project teams can establish a clearer path from planning to building.

Greater Melbourne Surveyors provides professional surveying support for property owners, builders, and developers across Melbourne, including consolidation of land parcels, title re-establishment surveys, and set out surveys. Engaging a surveyor early can help you understand the surveying requirements for your proposed development and make better-informed decisions about your land.

Frequently Asked Questions

1. Does building over lot lines automatically require a plan of consolidation?

Not necessarily. It depends on the type of building, the current titles, planning and building rules, and the intended land configuration. Consolidation may be required in some cases, while other options exist in others. Have the land assessed before you build.

2. What is the purpose of a plan of consolidation?

It legally combines two or more parcels of land into one. In Victoria, the plan is prepared and lodged under the relevant subdivision legislation.

3. Who prepares a plan of consolidation in Victoria?

A licensed surveyor. Depending on the property, other professionals may also need to be involved.

4. Can I consolidate two lots before building a house?

Possibly. Owners of adjoining lots can explore consolidation as part of their plans to build a home or another project.

5. Are set out surveys needed after consolidating titles?

Set-out surveying may be needed for the construction project, depending on its design and requirements. It helps mark the intended building positions on the site but is separate from the legal process of consolidating titles.