Understanding site hazards and checking approval requirements before work begins helps prevent injuries, service damage, costly delays and disputes. The rules depend on the work, https://perthlandscapingpros.com.au/paving/ the site and the relevant local authority. This guide explains practical safety steps and common permit considerations for Landscape Excavation in Perth in 2026. It is general information, not a substitute for advice from the relevant council, utility provider or qualified safety professional.

Why excavation safety matters in Perth

Excavation can expose workers and nearby residents to hazards that are not obvious from the surface. Trenches and cuttings can collapse without warning, particularly where soil is loose, wet, disturbed or close to a heavy load. Excavators and trucks can strike people, structures or buried assets, while dust, noise and vibration can affect neighbours and surrounding properties.

Perth sites vary considerably. Sandy soils, limestone, reactive clay, groundwater and existing fill can all affect how ground behaves. Conditions may change across a single block, and previous construction can leave buried concrete, rubble or undocumented services. Hot weather can also increase fatigue and dehydration, making safe work practices especially important during summer.

Excavation planning should be part of the broader Landscape Design & Construction process. Levels, drainage, access, retaining structures and finished surfaces need to work together. A design that looks practical on paper may require changes if a service corridor, easement, tree protection area or unstable ground is found during investigation.

Identify underground services before digging

Underground electricity, gas, water, sewer, telecommunications and drainage assets may cross private land. Their location cannot safely be assumed from visible service points or old plans. Hitting a live cable or gas pipe can cause severe injury, outages, fire or major repair costs. Damage to water and sewer assets may also flood an excavation or undermine nearby ground.

Before excavation, lodge a request through Before You Dig Australia to obtain available plans from asset owners. Allow enough time for responses, check the plans’ conditions and confirm whether additional approvals or on-site assistance are required. Plans are an important starting point, but they are not a precise map of every service and should not be treated as permission to dig anywhere shown as clear.

Look for signs such as meter boxes, pits, inspection openings, poles, service entries and changes in ground level. If the work is close to an indicated asset, arrange suitable locating and verification. Depending on the service and task, this may involve a qualified locator, non-destructive digging or hand excavation under an appropriate safe system of work. Follow the asset owner’s instructions for approach distances, exposure and protection. If an unidentified service is uncovered, stop work, keep people clear and contact the relevant authority or utility before proceeding.

Control risks on the excavation site

Prevent trench and soil collapse

Never enter an excavation that may be unstable without a competent person assessing the conditions and putting suitable controls in place. The required approach depends on depth, soil, weather, nearby loads and the work being performed. Controls can include battering or benching the sides, using a suitable shoring system, or keeping people out of the excavation. There is no single depth or method that makes every trench safe.

Keep excavated soil, machinery, building materials and vehicles back from the edge where they could load the sides or fall in. Inspect the excavation after rain, vibration, changes in ground conditions or any interruption that could affect stability. Provide a safe way to enter and exit where access is needed, and keep the edge visible and protected from accidental falls.

Separate people from machinery

Excavators and loaders have blind spots and can slew or reverse into workers, visitors, fences or buildings. Establish clear exclusion zones, use a trained spotter where visibility is restricted, and agree on signals before work starts. Workers should not approach an operating machine unless the operator has stopped and acknowledged them. Keep members of the public, children and pets away from the work area with suitable barriers and signs.

Manage dust, heat, noise and vibration

Use practical dust controls, such as dampening material where appropriate and covering loads during transport. Avoid practices that create unnecessary airborne dust, and consider nearby homes, schools and vulnerable occupants when scheduling noisy work. Monitor vibration where excavation is close to buildings, boundary walls or fragile paving. In hot weather, plan shade, drinking water, rest breaks and work scheduling to reduce heat stress.

Plan for water, access and emergencies

Water entering a trench can soften soil, conceal hazards and affect adjacent structures. Identify how surface runoff will be managed and consider whether groundwater is likely to be an issue. Do not pump water onto neighbouring land, footpaths or roads without confirming that the discharge method is lawful and will not cause erosion or pollution.

Keep access routes clear for workers and emergency response. Before starting, make sure workers know how to raise the alarm, where to assemble and who to contact if a service is struck or a collapse occurs. If a gas smell, electrical hazard or damaged live service is suspected, move people away, avoid touching equipment or the service, and contact emergency services or the utility as appropriate.

Permits and approvals to check in Perth

There is no single permit that covers every landscaping excavation. Requirements vary with the property’s local government area, the scale and location of the work, and whether it affects a building, road reserve, public land or regulated asset. Contact the relevant City or Shire before work if the proposal involves substantial earthworks, significant level changes, retaining structures, drainage changes or excavation near a boundary.

Planning and development approval

Earthworks may need planning or development approval depending on the local planning scheme, site constraints and the nature of the proposal. Check requirements if excavation changes land levels substantially, affects adjoining properties, forms part of a larger development or is in an area with special controls. Heritage considerations, bushfire requirements, coastal conditions, vegetation controls and easements may also affect what is permitted.

Ask the local authority whether the proposal needs approval and what plans or supporting information it expects. This may include existing and proposed levels, cross-sections, drainage details, retaining wall design, service information and a construction management plan. Do not rely on a contractor’s assumption that no approval is required simply because the work is in a backyard.

Retaining walls and building approvals

Retaining Walls can require engineering design and, in some circumstances, a building permit. Requirements depend on factors such as wall height, location, loads, boundary conditions and the relevant building rules and exemptions. A wall supporting a driveway, building or neighbouring land may have different design needs from a low garden edge. Confirm permit requirements with the local government before construction and use an appropriately qualified designer or engineer where needed.

Excavating beside an existing wall or building can remove ground that provides support. This may affect foundations, fences, paving and neighbouring structures. Where excavation approaches a boundary or existing footing, obtain professional advice before digging and agree on safe access and protection measures. Do not undermine a neighbour’s land or structure.

Road reserves, crossovers and public land

Work in a verge, footpath, road reserve or other public area may require separate permission from the local government or road authority. This can apply to machinery access, temporary occupation, skip bins, traffic control, service connections or changes to a crossover. Approval to work on private land does not automatically authorise work in a public reserve.

Check who manages the road and whether a traffic management plan, pedestrian detour or reinstatement bond is required. Protect street trees and public assets, and confirm restoration standards before removing or disturbing verge surfaces.

Environmental and drainage considerations

Excavation can redirect stormwater, expose contaminated material or disturb protected vegetation. Do not direct runoff onto adjoining lots or public paths. If the site has a drainage easement, keep the easement’s purpose and access needs in mind, and ask the relevant authority before building over or obstructing it. If unexpected odours, stained soil, buried drums or other signs of possible contamination appear, stop work and seek specialist guidance.

How excavation supports common landscaping projects

Good ground preparation affects the durability and safety of many outdoor features. For Concreting, excavation must account for the specified base, levels, drainage and finished thickness. For Paving, correct excavation depth and compaction help reduce settlement and uneven surfaces. These requirements should be set by the project design and site conditions rather than guessed during construction.

An Artificial Lawn installation also needs appropriate subgrade preparation, edge restraint and drainage. Poor excavation or compaction can lead to low spots and water pooling. Pool Landscaping requires coordination with pool barriers, plumbing, drainage and the pool contractor so that earthworks do not compromise safety or interfere with the pool structure.

Excavation may also be needed before Decking Installation or Pergolas Installation, especially where footings, posts, retaining work or surface levels are involved. Confirm footing locations against service plans and the structural details. For any integrated landscaping project, coordinate excavation with the people responsible for design, engineering, services and construction.

A practical pre-start checklist

Choosing a safe excavation contractor

Ask prospective contractors how they check underground services, assess ground stability and protect neighbouring properties. Confirm that the scope identifies who is responsible for permits, service locating, traffic control, spoil removal and reinstatement. Request evidence of relevant insurance and qualifications where the work calls for specialist design or operation.

A reliable contractor should be willing to pause if site conditions differ from the plan. Changes such as unexpected rock, groundwater, buried debris, an unknown service or a shifting boundary level may require a revised method or professional assessment. Treating these findings as a reason to reassess is safer than continuing to meet a schedule at any cost.

Plan carefully before the first bucket of soil is moved

Safe Landscape Excavation begins with accurate information, suitable controls and clear communication. In Perth, service locations, soil conditions, local planning rules and the type of landscaping work all influence the right approach. Check requirements with the relevant authority, follow utility instructions and obtain engineering or safety advice where the risks warrant it. Careful preparation helps protect workers, neighbours and property while creating a sound base for the finished landscape.

Perth Landscaping Pros

4/78 McCoy St, Booragoon WA 6154

ph. (08) 5122 6359