How to find your property boundary in New South Wales

You can find any property boundary in New South Wales by searching the street address on MapMyLot. The boundary polygon appears on the map in seconds - no lot number required, no account, no navigating through government map layers. The data comes from NSW DCCEEW (data.nsw.gov.au), the official NSW cadastral dataset, and covers all 4.89 million parcels in the state.

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What a property boundary is

A property boundary is the legal line that marks the extent of a land parcel. In New South Wales, every lot has a unique lot-on-deposited-plan reference (for example, Lot 1 DP 123456) recorded in the NSW cadastre. The boundary is the spatial representation of that legal description - it tells you exactly where your land starts and stops.

People commonly need to find their boundary when planning a fence or retaining wall, checking building setbacks before a development application, confirming lot area for a renovation estimate, or assessing a property during a purchase inspection.

How NSW Spatial Viewer works (and its limitations)

NSW Spatial Viewer (maps.six.nsw.gov.au) is the state government's official mapping tool. It includes cadastral boundaries, but the standard workflow requires you to either pan the map to your area or enter the lot-on-deposited-plan reference. That reference is on the Certificate of Title or a section 10.7 planning certificate - not something most people carry around.

MapMyLot accepts a plain NSW street address. The geocoding matches the address to the correct cadastral parcel and loads the boundary polygon without any lot-plan knowledge. This is particularly useful on-site during a property inspection when you need a quick answer.

How to find your boundary from a street address

  1. Go to mapmylot.com/app on any device.
  2. Type your NSW street address into the search bar and select the matching result.
  3. The map centres on the property and highlights the boundary polygon in teal.
  4. Tap the polygon to see area in square metres and hectares, and perimeter in metres.
  5. Toggle satellite imagery using the layer button to visually compare the boundary against the physical property.
  6. Download a PDF report of the boundary for $4.99, or access unlimited PDF exports with a Pro subscription at $19.99/month.

What the boundary data covers

The NSW cadastral data in MapMyLot comes from the NSW Department of Climate Change, Energy, the Environment and Water (DCCEEW) via the data.nsw.gov.au open data portal. It covers all 4.89 million lots in NSW - residential, rural, commercial, crown land, and stratum parcels. The data is in GDA94 (EPSG:4283) and is reprojected to WGS84 for display.

The boundary represents the compiled cadastral boundary from government records. It does not show easements, planning overlays, heritage listings, or bushfire risk zones. For those layers, refer to NSW Spatial Viewer or your council's DA mapping tools. MapMyLot gives you the lot boundary from a plain address - quickly, on any device.

Accuracy note: Cadastral data is accurate to approximately 1 to 2 metres. For a legally binding boundary determination - for example to resolve a fence dispute or establish a setback measurement - engage a registered surveyor licensed in New South Wales.

Frequently asked questions

How do I find my property boundary in NSW?

Search your street address on MapMyLot and the boundary polygon will appear on the map. No lot number or account is required. The data comes from NSW DCCEEW (data.nsw.gov.au), the official government cadastral dataset covering 4.89 million parcels.

What is NSW Spatial Viewer and how does it compare to MapMyLot?

NSW Spatial Viewer is the government mapping portal at maps.six.nsw.gov.au. It has cadastral layers but requires navigating by lot number or panning on a map. MapMyLot accepts a plain street address and shows just the boundary with area and perimeter - faster for day-to-day property checks.

How accurate is NSW property boundary data?

NSW cadastral data is accurate to approximately 1 to 2 metres. It reflects the compiled cadastral register from NSW DCCEEW. For a legally binding determination of a boundary - such as for a fence dispute or development application - you must engage a registered surveyor.

Can I see my lot size in NSW?

Yes. MapMyLot shows the area of your NSW property in square metres and hectares, and the perimeter in metres, once you search your address. No lot number is needed.

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