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Minor Change Existing Approval - RAL19 0018.01 (As Published)
Geotechnical Stability - Subdivisional Requirements
26. All subdivisional works must be carried out in accordance with a Geotechnical Report
prepared by a qualified person* and endorsed through an Operational Works approval. The
Geotechnical Report must include a site-specific geotechnical investigation for each
approved lot which identifies the building pads, building foundation requirements and stability
considerations necessary for each future dwelling (and their associated ancillary structures)
to maintain the stability of those dwellings for the long term. Each site-specific investigation
report must include a certificate of stability which certifies, verbatim, that: “the lot is stable,
can be safely built upon, and has a factor of safety in excess of 1.5, both prior to the
development and in the long term”
*(Refer to advisory Note)
27. Certification must be submitted to Council from a qualified person* which certifies that:
a. the subdivisional works have been constructed in accordance with the
recommendations contained in the approved the Geotechnical Report for the
development
b. the subdivisional works (roads, drainage, services and driveways) are stable and will
remain so over the long term.
c. a stable building pad has been constructed on each lot and the pad will remain stable
over the design life of a dwelling for the long term.
d. the works have a minimum factor of safety against landslip of 1.5 in the long term.
*(Refer to advisory Note)
Geotechnical Stability - Future Dwelling Requirements
28. All future dwellings on the approved lots must be sited and constructed in accordance with
any building siting and construction recommendations contained within the approved
Geotechnical Report for the development.
Earthworks
29. All earthworks and any associated batter/walls must be undertaken in accordance with an
Operational Works approval, and contained entirely within the subject site unless written
permission from the respective landowner(s) is provided to Council.
30. All retaining walls must be designed and constructed in accordance with the planning scheme
and must be certified by an RPEQ where exceeding 1.0m in height. All retaining walls that
are publicly accessible and exceed 1.0m in height must be fitted with a commercial grade
safety fence.
Damage to Services and Assets
31. Any damage caused to existing services and assets as a result of the development works
must be repaired at no cost to the asset owner at the following times:
a. where the damage would cause a hazard to pedestrian or vehicle safety, immediately;
or
b. where otherwise, upon completion of the works associated with the development.
Any repair work which proposes to alter the alignment or level of existing services and assets
must first be referred to the relevant service authority for approval.
Page 6 of 15
Document Set ID: 24931816
Version: 3, Version Date: 13/07/2026
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