Suppose you own two neighbouring plots.
You bought the first one several years ago and later acquired the plot next door. Each has its own parcel number and title, but you now use them as one property.
You may want to build across the old dividing line, redesign the compound as a single site or simply hold the land under one parcel instead of two.
That is where land combination comes in.
Combination takes two or more adjoining registered parcels and creates a new parcel arrangement from them. The survey work establishes how the existing parcels fit together, prepares the information needed to amend the cadastral map and supports registration of the resulting parcel.
What does the surveyor check first?
The team starts with the two existing parcels.
The parcel numbers, titles or certificates of lease and the available survey records are reviewed together. The records may include the cadastral map, previous survey plans, deed plans, mutation records and survey information for neighbouring land.
A cadastral map is the official map used to show parcels within a registration area. It allows the survey team to see how the two plots are recorded in relation to one another and to surrounding land.
The first important question is whether the parcels actually share a boundary.
Combination under the land-registration process applies to contiguous parcels. In ordinary terms, the plots need to touch each other. Two plots owned by the same person but separated by a road or another parcel are not simply one continuous piece of land.
The register also matters. The Land Registration Act provides for combination where the adjoining parcels are owned by the same proprietor and are subject to the same rights and obligations.
The team therefore needs to check more than the names written on the two titles. The register entries affecting each parcel also need to be understood. If the parcels do not have the same registered position, that needs to be identified before the combination is treated as straightforward.
Why does the existing survey information matter?
Imagine the two plots as Plot A and Plot B.
Each already has an outer boundary, and the line between them is currently a parcel boundary as well. When they are combined, that internal line will no longer separate two registered parcels, but the outer perimeter still has to be correctly established.
The surveyor therefore does not begin by simply erasing the line between A and B on a map.
The existing survey evidence is checked first. Boundary beacons, previous measurements, coordinates and the records of adjoining plots help establish the position of the land that is being combined.
Coordinates are numerical values used to describe the position of survey points within a particular reference system. Together with the other survey information, they help the team relate the recorded parcels to the physical ground.
The Survey Regulations require the available information from previous surveys of the property and adjoining land to be obtained before a survey is carried out. This records work gives the field team the information it needs to check the parcels properly on site.
What happens on the ground?
At the property, the team identifies the existing boundary marks and checks them against the survey records.
For Plot A and Plot B, the surveyor is interested in both the outside perimeter and the common boundary between the plots.
Measurements are taken to establish how the two parcels relate to one another. Existing beacons are checked, and relevant site features such as walls, fences, roads and buildings may be recorded where they help explain the parcel arrangement.
The common boundary deserves particular attention. A fence may appear to divide the two plots, but the survey still needs to establish how that fence relates to the recorded parcel line.
If a beacon is placed or verified using calculated survey information, the Survey Regulations require its position to be checked independently in the field. The survey work is also recorded in field notes so that the observations and measurements can be followed later.
The result should establish the geometry of the land before the new combined parcel is prepared.
Does the old boundary simply disappear?
Not immediately.
Until the survey and registration process is completed, Plot A and Plot B remain separate parcels in the cadastral and land-registration records.
The survey documentation shows the proposed combined arrangement. Once the survey information is checked and approved through the applicable process, the cadastral map can be amended to remove the old internal parcel division and show the resulting parcel.
The Land Registration Act provides that when a parcel boundary is altered on the cadastral map, the affected parcel number is cancelled and a new number is assigned.
The practical result is not simply two old parcel numbers sitting under one title. The cadastral identity of the land changes to reflect the new parcel arrangement.
Is county approval involved?
Yes, where the combination is being processed under the current land-registration procedure.
The Land Registration Regulations require the application for combination to be supported by a copy of the relevant county government’s approval of the development application.
This is separate from the survey itself. The approval deals with whether the proposed land arrangement is authorised through the applicable planning process. The survey then measures and documents the land in a way that conforms with that approval.
The Survey Regulations reinforce this connection. Before a survey is submitted for approval, the surveyor must ensure that any statutory approval required for the transaction has been obtained and that the survey agrees with it.
For the owner, it is useful to keep the approval and the resulting survey documents together. They should describe the same proposed combination.
What is the application for combination?
The Land Registration Regulations prescribe Form LRA 26 for the combination application.
The form identifies the existing titles and the registered proprietor. It then sets out the proposed combined arrangement using the cadastral information for the resulting parcel.
The application is supported by the documents required for the transaction. These include the county approval, registered mutation, cadastral map, the existing title or lease documents and any required consents. Where the parcels have fixed boundaries, a cadastral plan for the resulting parcel is also required.
A cadastral plan is a geo-referenced plan approved by the authority responsible for land survey. For fixed-boundary parcels, it provides the precise survey information used for the resulting property.
The exact supporting documents therefore depend partly on the boundary system and the registered interests affecting the land.
What does the mutation form show?
The mutation form records the change being made to the parcel arrangement. The prescribed form is Form LRA 27.
For a combination, the proprietors’ instructions section allows the owner to instruct the surveyor to combine the parcels according to the proposed layout or approved scheme plan.
The survey section then records the layout measured on site. The surveyor confirms that the plotted information contains the actual field measurements and takes responsibility for the work carried out in the field and office.
Later sections allow the survey information to be checked, new parcel numbers to be provided and the cadastral map to be amended. The form then moves to registration by the Land Registrar.
This makes the mutation useful for understanding the progress of the combination. It connects the original parcels, the survey work, the amended cadastral map and the registration of the resulting parcel.
A mutation that has only been prepared or signed at the first stage is not the same thing as a completed combination. The checking, map amendment, new parcel number and registration stages still matter.
What happens to the old parcel numbers and titles?
When the combination is completed, the land registry closes the registers relating to the old parcels and opens the register for the parcel resulting from the combination.
The old parcel identities are therefore replaced by the new registered parcel arrangement.
This is an important distinction for an owner who has physically used two plots as one property for years.
Removing a fence or opening a gate between the plots does not combine the parcels in the land records. They remain separate until the cadastral map and register are changed through the required process.
For Plot A and Plot B, the final records should allow you to follow both old parcels into the new parcel number and its register.
What happens to the beacons along the old internal boundary?
The survey records need to show clearly which marks still define the resulting parcel and which no longer serve as parcel corners.
Some beacons along the old dividing line may become redundant after the combination.
The Survey Regulations deal with redundant beacons where a visible old mark could cause confusion. In that situation, the mark may be removed or replaced by an underground witness mark.
This matters because an old beacon left between the combined plots can later be mistaken for a current parcel corner.
The outside boundary marks of the resulting parcel remain important. Those are the points that now help define the perimeter of the combined property.
How is the new area worked out?
The resulting parcel has an area calculated from the survey information.
For straight-sided boundaries, the Survey Regulations require the area to be computed mathematically. The calculations are independently checked before they are submitted for authentication.
The survey plan shows the numerical information used to describe the parcel, including coordinates and, where applicable, boundary lengths and bearings.
The area of the resulting plot is then shown on the plan to the required degree of precision.
This provides a measured survey result for the combined property rather than simply adding the approximate areas printed on the two old titles and assuming the figures must match exactly.
What should you have at the end?
You should be able to follow the transaction from Plot A and Plot B to the new combined parcel.
The project file should contain the relevant approval, completed survey and mutation records, the amended cadastral information and the new parcel details.
The outer boundary on the ground should correspond with the survey information for the resulting parcel. The land register should also reflect the new parcel rather than continuing to treat the property as the two previous titles.
When commissioning the work, ask what parts of the process are included in the quotation. Records research, field survey, preparation of the mutation and survey records, statutory approval and registration follow-up may involve different steps.
The scope should make clear what the survey team will prepare, what approvals are required and what documents or references you will receive when the work is complete.
What should you send to Walterland?
Send the parcel numbers and copies of the titles or certificates of lease for all the plots you want to combine.
If you have cadastral maps, deed plans, survey plans, mutation forms or previous boundary reports, include them.
Explain why you want the parcels combined and how the property is currently used. Mention any walls, buildings, roads or other features that cross or sit close to the existing common boundary.
These details help the team identify the records to obtain, the boundary work required and the approvals relevant to the proposed combination.
Related Walterland services and guides
- Cadastral surveys: Check the existing parcels and prepare the survey records for an approved combination.
- Boundary verification: Confirm the existing outer and common boundary evidence before the parcel arrangement changes.
- How partition works: See the related process for separating co-owned land into individual registered parcels.
- How subdivision works: Understand how one parent parcel is divided into separately registered plots.
- When title area and the ground differ: Learn why boundary evidence is checked before interpreting a difference in area.
Do you want two plots registered as one?
Send the parcel numbers, location, title copies and any survey or mutation records you already have. Walterland can advise on the records, approvals and survey work needed for the proposed combination.
Need to check the existing parcel boundaries first? Read the boundary-verification guide →
Legal references
General guidance, not a determination of a particular property or legal advice. A licensed surveyor and the relevant professionals should check the register, approvals and current process for the parcels.