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(02) 9607 2864


Unit 5, 1 - 3 Whyalla Place,
Prestons, NSW 2170

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Experienced in Surveying

Nastasi & Associates provides a comprehensive range of surveying services. Alongside our engineering services we've taken an integrated approach with an experienced surveying team to streamline design, inspections and surveying to allow our customers building sites to carry on with building from start to finish. The following residential surveys are currently provided in NSW and we’ve explained the differences between them and when they are required. Our surveying team can carry out other surveying services for land development, civil and construction.


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Detail Survey

When: Before a DA or CDC
Who For: Architects or Draftsman
Lead-time: 7days

A detail survey is most commonly used as an initial survey for the purposes of a development application (DA) also known as a Contour, feature or level survey. Typical situations where a detail survey is required are for a knockdown rebuild, granny flat, house extension, swimming pool, landscaping and garage addition. A detail survey is a plan that shows the features (structures, drains, trees, fences, utility services etc.) and levels across a property and any relevant adjoining property that maybe required. It will be used by builders, architects, designers or draftsman to design any future works. The survey must also be lodged as part of a DA or complying development to your local Government authority or private certifier. The amount of detail shown varies from job to job and is dependent on the information required by the Council for development application purposes, or your architect’s scope of work required.

Notes: It is recommended a boundary definition survey be undertaken with all detail surveys as most Local Councils require it.


Drawing Examples: Typical Detail Survey    Granny Flat Example



Boundary Definition Survey

When: Required by some councils in Sydney such as Northern Beaches Council, Sydney City Council, Inner West Council & Parramatta Council

Who For: Architects, Draftsman & Council

A Boundary definition is where we find the underlying plans that relate to the definition of a property. These plans show information required to accurately position the boundary corners of a lot. This allows the surveyor to overlay these boundaries onto a detail survey or come back and mark the boundaries. 


Notes: A boundary definition survey must be undertaken by or under the supervision of a Registered Surveyor as it relates to the legal definition of a parcel of land. Most properties can have a boundary definition undertaken on them. In cases where the underlying information is very old or limited, a plan of redefinition maybe required.



Boundary Marking Survey

When: Whenever or before construction

Who For: House owners or Builders

A boundary marking is the process of physically marking out a boundary definition survey by marking the boundary corners onsite and providing a plan showing what has been marked. This allows you to see on the ground where the extent of your property is.  It may be required for construction like retaining walls, as this allows the builder to build the wall in the correct location.


Example Drawing 



House Setout Survey

When: Whenever or before construction

Who For: House owners or Builders

Once a construction certificate has been granted for a new house, house extension, granny flat, garage or swimming pool application, a house set out survey will be required to accurately mark out the proposed new works in relation to boundaries. This will need to be done as the Council or certifier will require a final occupation survey once construction has been completed. This will show the new structure in relation to the boundary.  If this does not match, final approval cannot be granted.


Example Drawing 



Final Occupation Survey

When: After construction

Who for: House owners, Builders & Certifiers

The final occupation survey (Final OC survey) is one requirement to gain your occupation certificate on the completion of new works.  Councils potentially will not issue garbage bins, and banks may not release final payments until this has been completed. A sketch showing the completed works in relation to boundaries is supplied to ensure that it corresponds with the proposed design plans.


Example Drawing 



Work As Executed Survey

When: After construction

Who for: House owners, Builders, Certifiers & Engineers

A Work-As-Executed (WAE) Survey is carried out at the completion of civil and hydraulics work. The importance of this survey is to confirm dimensions and reduced levels (RLs) of roads, driveways, stormwater systems, pits etc. compared to approved plans and designs.


Example Drawing 



Identification Survey

When: Before selling house

Who for: House owners & Solicitors

An identification survey identifies existing buildings and improvements on a block of land, as well and any limitation from the title.  It is recommended to have an ident survey done prior to purchasing a property, to protect against any potential disputes.  It also gives the purchaser an understanding of any existence of easements, covenants and restrictions on the use of the land, and whether the subject land complies with the conditions.  It also shows the distances of the walls, eaves and/or gutters from the boundaries of the property, or if there are any encroachments.  A site plan and report are provided on the completion of this work.


Example Drawing 



PPN Numbers

When: Before Subdividing

Who for: House owners, Planners & Sydney Water

Pre-Allocated Plan Numbers (PPNs) are unique plan numbers issued to surveyors by NSW Land Registry Services (LRS) for a proposed land development. A PPN is requested by a surveyor and is allocated to a specific parcel of land before plans are ready for lodgement. PPNs do not have an automatic or early right to registration and are subject to the usual NSW LRS plan registration processes. They are also required in advance by Sydney Water of proposed subdivisions that require the provision of water utilities.