Product Overview

Summary: This Safe Operating Procedure sets out clear, practical steps for protecting existing trees on and around construction sites, while keeping workers and the public safe. It helps construction businesses meet their WHS and environmental obligations by controlling plant, excavation and traffic activities within tree protection zones and managing associated site hazards.

Construction activities near existing trees create a complex mix of safety, environmental and compliance risks. Uncontrolled excavation, plant movement or materials storage can undermine tree stability, damage roots and branches, and create falling object or collapse hazards for workers and the public. This Construction Site Tree Protection SOP provides a structured, step‑by‑step process for planning, installing and maintaining tree protection measures that keep people safe while preserving valuable vegetation and complying with Australian WHS and environmental requirements.

The procedure covers the full lifecycle of tree protection on site – from pre‑start assessment with arborists and surveyors, through establishing Tree Protection Zones (TPZs) and Structural Root Zones (SRZs), to day‑to‑day controls for machinery, excavation, trenching, scaffolding and material handling around trees. It gives your teams clear rules for fencing, signage, exclusion zones, safe work distances and alternative methods (such as vacuum excavation or hand digging) to avoid root and canopy damage. By implementing this SOP, construction businesses can reduce the risk of injury from unstable trees or falling limbs, avoid costly rectification orders and fines from councils or regulators, and safeguard the amenity value of trees that are often protected under planning approvals.

Written specifically for Australian construction and civil works environments, the SOP aligns with WHS duties to manage risks associated with plant, working at height, falling objects and ground stability. It also supports compliance with local council tree protection conditions and development consents. The result is a defensible, repeatable process that integrates tree protection into normal site management, toolbox talks and subcontractor controls, rather than treating it as an afterthought.

Key Benefits

• Ensure WHS compliance by systematically managing the risks of working in and around tree protection zones.
• Reduce the likelihood of worker injury from falling branches, unstable trees and unexpected ground movement.
• Protect high‑value and regulated trees, minimising disputes, rectification costs, council penalties and project delays.
• Standardise how supervisors, subcontractors and plant operators plan and execute works near trees across all projects.
• Demonstrate due diligence to clients, regulators and local councils through documented, auditable tree protection controls.

Who is this for?

• Construction Project Managers
• Site Supervisors
• WHS Managers and Advisors
• Civil Engineers
• Landscape Architects
• Site Forepersons
• Plant and Machinery Operators
• Local Government Infrastructure Managers
• Environmental and Sustainability Coordinators
• Urban Development Managers

Hazards Addressed

• Falling branches and canopy material impacting workers, plant or the public
• Tree instability or collapse due to root damage from excavation or trenching
• Struck‑by incidents involving mobile plant operating too close to trunks and low branches
• Ground instability and slips, trips and falls around exposed roots and uneven surfaces
• Manual handling injuries when installing tree protection fencing, barriers and bracing
• Contact with overhead branches during operation of EWPs, scaffolding and cranes
• Damage to underground services when altering excavation paths to avoid tree roots
• Reduced visibility and access constraints created by tree protection barriers and fencing

Included Sections

• 1.0 Purpose and Scope
• 2.0 Definitions (TPZ, SRZ, significant tree, exclusion zone)
• 3.0 Roles and Responsibilities (PCBU, Project Manager, Site Supervisor, Arborist, Workers)
• 4.0 Pre‑Construction Tree Assessment and Planning
• 5.0 Establishing Tree Protection and Exclusion Zones
• 6.0 Required PPE, Signage and Safety Equipment
• 7.0 Safe Use of Plant and Equipment Near Trees
• 8.0 Safe Excavation, Trenching and Service Installation Around Roots
• 9.0 Working at Height and Falling Object Controls Near Tree Canopies
• 10.0 Materials Storage, Waste Management and Access Routes Around Trees
• 11.0 Inspection, Monitoring and Maintenance of Tree Protection Measures
• 12.0 Managing Damage, Near Misses and Non‑Conformances
• 13.0 Emergency Procedures for Tree Failure or Falling Branches
• 14.0 Training, Induction and Toolbox Talk Requirements
• 15.0 Documentation, Records and Council/Regulator Liaison
• 16.0 Review and Continuous Improvement of the SOP

Legislation & References

• Work Health and Safety Act 2011 (Cth and relevant state/territory variants)
• Work Health and Safety Regulations 2011 (Cth and relevant state/territory variants)
• Safe Work Australia – Code of Practice: Construction Work
• Safe Work Australia – Code of Practice: Managing the Risk of Falls at Workplaces
• Safe Work Australia – Code of Practice: Managing Risks of Plant in the Workplace
• AS 4970–2009: Protection of trees on development sites
• AS/NZS ISO 31000: Risk management – Guidelines
• Local government tree protection and vegetation management policies (varies by council)