The address on the contract is not the legal description. The legal description of any Australian lot is a "lot on plan" — for example, "Lot 12 in Deposited Plan 1234567." That plan is a survey-accurate drawing held at the land titles office, and it tells you things the title and the address cannot.

Every Torrens lot exists by reference to a registered plan. The name varies by jurisdiction — a Deposited Plan (DP) in NSW, WA, ACT and NT; a Plan of Subdivision (PS) in Victoria; a Survey Plan (SP) in Queensland; a Filed Plan in South Australia and Tasmania. Strata schemes use a Strata Plan and community estates use a Community Plan or its state equivalent. They all do the same job: define the precise boundaries, areas and rights attaching to each lot.

What does a plan show? Every lot identifier on the relevant block of land. The boundary bearings and distances — directions in degrees, minutes and seconds, and distances in metres, often to four decimal places. The area of each lot in square metres or hectares. The scale, usually 1:200 to 1:1000. A true north point (not magnetic). Easements and rights of carriageway as labelled bands ("E1 — Easement for sewerage, 3.00 metres wide"). Road dedications, reserves and common property. The registered surveyor's signature and licence number, the plan number, registration date and local government area, and the administration sheet — the often-overlooked textual side of the plan that references any Section 88B instrument or restriction document (more on those in the next post in this series).

Reading a plan matters for practical reasons. It's the only source for precise lot dimensions, the exact width and path of easements (which constrain where you can build), whether a block is "battle-axe" (a flag lot with a long handle), or whether a lot you thought was rectangular actually narrows or has a chamfered corner. Two lots advertised as "1,200 m²" might have very different usable areas once easements and setbacks are applied.

A few terms worth knowing. The "lot on plan" is the legal identifier — Lot 12 in DP 9876, or Lot 5 on RP 1234. The Volume-Folio or parcel ID is the title reference — they're related but distinct. Bearings describe boundary directions. Easements labelled E1, E2 identify bands of land with another party's rights (usually utilities or neighbours). The administration sheet lists surveyor declarations, council certifications, and references to any associated instruments. Survey marks or DP corner pegs are physical markers placed on the ground — though they can be moved, buried or removed over time.

Questions worth asking the seller:

  • Can I have a copy of the registered plan — not a "proposed" or "draft"?
  • Has council certified the plan (the 8(2) certificate or administration sheet)?
  • What does each labelled easement encumber, and how wide is it?
  • Are the boundary pegs still on the ground? Can you point them out?
  • Is the lot a battle-axe — is the access strip part of my lot or a separate right of way?
  • Does the registered area match what's marketed?
  • Have any boundary fences been built off-line — i.e. does the plan position match physical position?

Who can help. A registered or licensed surveyor (state-licensed; for example, NSW's Board of Surveying and Spatial Information, Victoria's Surveyors Registration Board) is the only professional who can lawfully redefine a boundary. An identification survey on a typical residential block costs around $1,500–$5,000; a full feature and level survey suitable for construction design is $2,500–$8,000. Your conveyancer or solicitor can also help interpret the plan in conjunction with the title.

Plan copies are cheap and quick — typically $15–$40 to order from the relevant state registry, and you can have one in your hands within minutes online. Commission an identification survey if anything about the boundary or fence positions seems uncertain, or if you intend to build close to a boundary. The plan is one of the cheapest pieces of due diligence you can do — and one of the most consequential when something is wrong.

This article is general information only — a starting point for your own questions, not professional advice. Plan terminology, fees and registry processes vary by state and territory and are subject to change. Always engage a registered surveyor and a licensed conveyancer or solicitor, and request from the seller a copy of the current registered plan, any associated instruments, and an identification survey where boundary position matters. Independent advice should be obtained before making any property decision.