A Simplified Explanation Of Site & Earth Works Part 4

Site & Earthworks on a small and narrow block

In the 4th post of the series, we discuss other possible site & earthworks related items that you may encounter when designing and building your new home.


Where there is too much of a slope on a block to have a simple cut and fill earthworks, retaining walls of some sort will be required to hold the soil in place.

Retaining walls can be a simple brick build up, so the footings and brickwork are just built down to accommodate the slope or it could be a retaining wall.

They can be built out of double brick, concrete post and rail or limestone blocks, depending on where the wall is to be and how high it needs to be.

Other possible site – earthworks related items are covered in our next instalment of this series, Part 5

Removal of existing fencing

In older areas, there may be old asbestos fencing that will need to be removed. Some blocks may have fencing that is on the boundary that may have to be removed to allow for online boundaries. Alternatively, there might be fencing that is inside your boundary that must be removed in order for the walls to be placed in the correct position.

When fencing is needed to be removed, the neighbours will need to be kept informed. Sometimes, the neighbours will need to give approval for the fence to be removed to allow room for the online boundary walls.

The neighbours may have pets or children, and removing the fence may create issues with them being able to get out, so some agreement may have to be met to solve this issue.

A cheaper option when a fence needs to be removed, is for the clients is to remove the existing fencing and dispose of it themselves.


Your lot is surveyed to determine the boundaries and the size of the block.  In order to complete a survey, you will need to provide a copy of the plan # for your lot. The plan number is found on a copy of your title.  Providing the plan number enables the surveyor to find the information from the titles office a lot easier.

The survey provides a lot of information, not just the size of the lot and the boundaries. It may also show

  • location of the services, eg, water, sewer, power pole, gas, etc.
  • any trees, the height and position
  • fencing – if on the boundary, or what it is made from
  • and in some cases limited info regarding the adjacent home, eg if it is only a short distance from the boundary, or asbestos roof,
  • Water meter position
  • power pole position
  • Telstra pit location
  • if applicable, sewer details, depth and position,
  • any levels of the lot,
  • access ways,
  • and any cross roads.
  • Once the survey has been received, the draftee will draw your home on the survey to ensure that the house fits will form part of your working drawings.

Engineers reports details 

Some of the more common engineering reports that may be required for your lot are:

  • Site classification Report (bore holes, footings and slab details) and soil testing on clay sites
  • Piling details
  • Suspended slab details
  • Compaction certificates
  • Slab inspection details
  • Post details
  • Retaining & brick build up details
  • BAL (Bushfire Attack Level) assessment
  • Geo technical report  – required for all clay sites and some shires for storm water designs
  • Hydraulic Storm water designs
  • Column details –
  • Masonry pier details (piers under the main roof)
  • Roof tie downs

All builders need to do the same amount of work to comply with Shire and Engineer’s requirements. They will all charge for these works somewhere. Central Avenue Homes provides you with those costs up front.

No Surprises or additional unknown costs

With Central Avenue Homes, completing these works, you will be guaranteed:

  • We provide you with all costs provided upfront
  • There will be no unexpected or unknown costs.
  • We supervise these as part of the building process.
  • These items are completed to Shire and Engineer requirements.

For a more specific idea of what your blocks Site – earthworks will include contact us at Central Avenue Homes.

Or call and speak to our in house designer 9456 3366