You have a DA sitting with council, a builder asking where the side setback starts, and a neighbour who swears the fence has always been the line. Three people. Three versions of the same allotment. This is the point where a lot of Queensland jobs stall, not because the architecture is wrong, but because nobody has asked a registered cadastral surveyor to put the legal boundary back on the ground.
By now we all mostly know what land surveyors are, but people still type “boundary surveys” or “identification survey” into Google and assume they are the same product. They are not. Order the wrong one and you wait on a plan you did not need, or worse, you set a slab from a fence that wandered twenty years ago.
At Leading Surveys we hear this mix up every week. Developers, builders, architects and project managers across South East Queensland (and on jobs further afield) ask for a Boundary Survey when they really need corners marked on an existing lot. Others ask for a peg out when the real task is creating new titles. This guide sets out the difference in plain language, when each survey is the right call, and how to brief us so the work lands first time.
What cadastral surveys do in Queensland
Queensland property boundaries are not defined by a pin on your phone. They are not defined by the kerb, the fence, or the edge of the driveway. They are defined by cadastral survey marks, usually white pegs at the corners, placed by a surveyor registered with the Surveyors Board of Queensland.
Cadastral surveys deal with land tenure, ownership and legal definition. Two of the most common jobs in that family are:
- Surveys that mark existing boundaries. That is an identification survey.
- Surveys that create or change boundaries. That is typically a subdivision or other boundary definition survey.
Only a registered cadastral surveyor can undertake this work and place a mark that defines a property boundary. Only that surveyor can certify the plan for lodgement with the Queensland Government.
If you need levels, trees, pits and building footprints for design, that is a different product. A contour and detail survey captures the physical site. Useful. Often essential. Not a substitute for cadastral definition.
What an identification survey is
An Identification Survey (often called an Ident) finds and marks the existing legal boundaries of a parcel that already exists on title. We are not creating a new lot. We are putting the current title back on the ground so you can see it, measure from it, and act on it.
Typical reasons clients commission one:
- You want to build or replace a fence and you need the true line, not the old palings.
- A neighbour disputes where the common boundary sits.
- You are buying, and you want to know if the garage, retaining wall or pool sits inside the lot.
- Council or a certifier wants confirmation of setbacks before certification.
- You are about to start a Construction Survey or Set Out Survey and the control has to sit relative to the legal boundary, not a fence.
The surveyor considers the title, the registered plans, reference marks, occupation (fences, walls, buildings), and the surrounding cadastre. Then we mark the corners, usually with pegs, and prepare a plan that is lodged as an official record.
An Ident does not create new lots. It does not move a boundary. It tells you where the boundary already is.
What people mean by a boundary survey
Boundary surveys cover more than one cadastral job, and that is where the confusion starts.
When a client asks us for boundary work, we first ask what they are trying to achieve.
If the lot already exists and you only need it marked, you want an identification survey.
If you need new boundaries created, altered, or formally redefined as part of a development, you are in different territory. That includes:
- A Subdivision Survey, from a simple one into two through to a staged residential estate
- Amalgamations
- Easement surveys
- Volumetric surveys and building format plans
- Community title and exclusive use
- Watercourse or tidal boundaries where the bank has moved
Those surveys change the cadastre. New lots get dimensions, areas and identifiers. Plans are prepared to the Cadastral Survey Requirements and lodged so titles can issue.
A boundary survey in the development sense is a legal act, not just a field visit with a total station. It sits alongside town planning, engineering and titles work. Get the sequence wrong and you can design a tidy site layout that cannot be registered.
How the two jobs differ on a live project
Due diligence and purchase
A Brisbane infill buyer looks at a 600 square metre lot in a character suburb. The listing photos show a wide side yard. The fence sits well off the neighbour’s wall. Looks generous.
An identification survey later shows the fence is 0.4 metres inside the subject lot. The extra yard belongs to the neighbour in occupation, not in title. Setback calculations for the proposed duplex just got tighter. Better to know that before you go unconditional than after you have paid a design team.
If the same buyer intends to split the lot, the Ident is still useful early. The work that creates the new lots is a subdivision. Different plan, different lodgement, different timeline.
Fences, encroachments and neighbours
Queensland’s Neighbourhood Disputes (Dividing Fences and Trees) Act 2011 is the usual backdrop here. People argue about who pays, then discover they do not even agree where the fence should go.
An identification survey is the tool for that. We mark the common boundary. You can then talk about a dividing fence on the line, or document an encroachment if a slab, eave or retaining wall has crossed it.
Do not measure from the kerb. Do not trust a phone GPS. Do not assume the existing fence is the boundary because it has always been there. Occupation is evidence. It is not the title.
Building, DA and construction
Architects and builders often need the boundary before they lock a building envelope. Side and rear setbacks, site cover, and whether a proposed wall is on the boundary all hang off cadastral position.
Once design is approved, construction setout should be based on that same definition. We regularly see setout requested from architectural drawings that were prepared from an old contour plan with an “approx boundary” note. That is a risk. If the true boundary is 150 millimetres different, a wall on the boundary becomes an encroachment, or a setback fails.
The clean sequence on most builds is:
- Identification survey to mark the existing lot
- Detail and contour information for design
- Design and approval
- Construction setout from coordinated control
Construction surveying then carries that geometry through excavation, footings, grid lines and as-constructed checks.
Subdivision and new lots
If the project is a one into two in a Brisbane backyard, or a multi-lot industrial park, you are creating boundaries that did not exist yesterday. That is not an Ident. It is cadastral definition for new tenure.
We still often start with identification of the parent parcel, because you cannot cut new lots from a parent boundary you have not proven. Then the subdivision plan does the legal work.
What these surveys will not do
A cadastral survey will not tell you the fall across the site, the location of a sewer, or the canopy spread of a significant tree. That is contour and detail work.
It will not replace a town planner’s advice on zoning, overlays or yield.
It will not, by itself, settle a court dispute. It gives you a professional, lodgable determination. Legal strategy sits with your solicitor. We do provide professional advisement and expert witness services where a matter needs a surveyor in the room.
It will not show the kerb relative to the boundary unless that is separately surveyed as a feature.
How we work through the evidence
Cadastral work is part measurement, part legal interpretation. On a typical inner Brisbane lot the original survey might be a century old. Pegs are gone. Reference marks may be buried under a driveway. Fences have been replaced twice. A brick wall might sit 80 millimetres over the line.
Our cadastral team, registered and accredited to carry out this work, will:
- Search titles, registered plans, easements and relevant survey records
- Recover or connect to existing survey marks and the surrounding cadastre
- Measure occupation and improvements that sit near the line
- Weigh conflicting evidence and apply Queensland cadastral practice
- Mark the corners and, where required, lodge the plan
Rural jobs look different. GNSS can be the right tool over larger parcels. Tight urban infill often needs a total station and a lot of digging for old marks. Complex volumetric boundaries in mixed use buildings can involve laser scanning. We pick the method that fits the parcel, not a single method for every site.
That mix of field craft and title knowledge is why About Us is worth a look when you choose a firm. Our team has over 100 years of collective surveying experience, and cadastral work is not a sideline. It is core.
What to send us in the first email
If you want a useful quote and a survey that answers the real question, include:
- Real property description (lot on plan) and street address
- What you are about to do: fence, purchase, DA, setout, subdivision
- Any council or certifier request you have in writing
- Known disputes, encroachments or missing pegs
- Whether easements, leases or volumetric interests are in play
- Your program. Cadastral searches and mark recovery take time. Do not leave it until the excavator is booked.
Tell us the decision you need to make. “We need the side boundary before we lock the townhouse setback” is a better brief than “please survey the block”.
Mistakes that keep showing up
Relying on a contour plan for legal setbacks. Feature surveys often show an indicative boundary. It is not certified cadastral definition.
Assuming a previous Ident from ten years ago is still marked. Pegs get knocked. Always check.
Asking a builder’s labourer to find the pegs and then setting a slab from that. If the peg was a garden stake, you have a problem.
Ordering a full subdivision process when you only needed corners marked for a fence. You will overspend and wait for a plan you did not need.
Ordering only an Ident when the commercial goal is new titles. You will get pegs and still have one lot.
Skipping cadastral input on a machine control or drone model. Beautiful surface data sitting on the wrong boundary is still wrong.
If the lot already exists and you need to see it on the ground, commission an identification survey. If you need new or altered legal boundaries, you need a cadastral boundary definition job, most often a subdivision or related plan.
Both are cadastral surveys. Both must be done by a registered cadastral surveyor. Neither is a contour plan, and neither should be guessed from a fence.
Leading Surveys works this through with developers, builders, civil contractors, architects, town planners and project managers across Queensland and on jobs further afield. If you are unsure which product you need, say what the project is trying to achieve. We will tell you the right survey, not the largest one.
For cadastral, construction and site mapping support, Contact Us and we will get a registered surveyor onto the question quickly.
Common Questions
Is an identification survey or a boundary survey needed to build a fence?
If the lot already exists, an identification survey is the right job. A registered cadastral surveyor marks the existing common boundary so the fence can be built on the line. A subdivision style boundary survey is only relevant if new lots are being created.
Can any land surveyor mark property corners in Queensland?
No. In Queensland, only a surveyor registered with the Surveyors Board of Queensland as a cadastral surveyor can perform a boundary survey and place a mark that defines a property boundary. A feature surveyor or construction surveyor without cadastral registration cannot legally define title boundaries.
Will a contour and detail survey show the legal boundary?
It may show an approximate line for design context. That line is not a certified cadastral determination. If setbacks, encroachments or fencing depend on the result, commission an identification survey as well.
How long does an identification survey take?
It depends on the age of the original survey, whether marks still exist, and how built up the site is. Inner city lots with missing marks and heavy occupation take longer than a recently pegged greenfield lot. Searches and lodgement sit around the field work, so talk to us early if you have a DA or settlement date.
What if a landowner disagrees with where the surveyor placed a corner?
Speak with the surveyor first and ask them to walk through the evidence. Cadastral decisions weigh title, registered plans, marks and occupation. If the disagreement remains, seek advice from another registered cadastral surveyor and, where needed, legal advice. Neighbours sometimes commission their own Ident.
Is a survey needed before going unconditional on a purchase?
Not every contract requires it. It is still one of the cheapest ways to find an encroachment, a missing corner, or a fence that does not match title. For development sites, an Ident plus contour and detail information is a common due diligence package.
Is a subdivision survey the same as an identification survey?
No. An identification survey marks an existing parcel. A subdivision survey creates new boundaries and supporting plans so new titles can issue. Many projects need both, in that order.
Can you survey if the pegs are gone?
Yes. Missing pegs are a common reason to call us. The surveyor reconnects to the surrounding cadastre and remaining reference marks, then re-marks the corners and lodges the plan.
Do you work outside Brisbane?
Yes. Leading Surveys is Queensland based and takes on cadastral and construction work across South East Queensland and further afield, including Australia wide capability where the project needs it. Talk to us about the site and we will confirm coverage.