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Adams Arboriculture
Temporary fencing and an exclusion zone sign enclosing the protected root zone of a retained tree on a construction site

Development & construction · Brisbane and South East Queensland

From first sketch to final sign-off.

Adam works with developers, architects and builders from before a DA is lodged through to completion certification. One arborist across the whole project, with no stake in the tree work it recommends.

0415 105 592Call 0415 105 592or send the details across

Start here

Send the site address

Early is cheap. Send the address and the stage you are at, and Adam will tell you what the trees mean for the project.

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An excerpt from a tree protection drawing showing root zones drawn over street trees against a proposed subdivision layout, with the encroachment percentages noted

What it covers

The trees are a constraint you can design around

Trees on a development site are rarely a yes-or-no question. They are a set of constraints — root zones, protection distances, construction methods — and constraints are much cheaper to work with while the layout can still move.

The cheapest time to find a tree constraint is before the plans are fixed. Once a design is locked, working around a retained tree means redesign, a changed approval pathway, or both. Adam is engaged early for exactly that reason, often verbally, well before any formal report is needed.

From there he stays on the project: the report the approval names, the protection documented for construction, supervision while works happen around retained trees, and the final inspection where a condition requires one.

  • Preliminary Arboricultural Report (PAR)The design and planning stage document under AS 4970:2025, while the layout can still change.
  • Arboricultural Impact Assessment (AIA)The impact of a proposed development on the trees. What most approvals name.
  • Tree Protection Plan (TPP)The protection measures, drawn for the site and the works proposed.
  • Tree Protection Specifications (TPS)How that protection is built, maintained and inspected through construction.
  • Tree Management Plan (TMP)How identified trees are to be managed over time.
  • Completion Report or Declaration of ComplianceAfter approved works, where a permit or condition requires an arborist to certify them.
What AS 4970:2025 requires

How Adam is engaged

Four points a project usually needs an arborist

Not every project needs all four. Knowing which one you are at is usually a five-minute conversation.

  1. 01

    Before the design is locked

    A site walk and a conversation while the layout can still move. Which trees are constraints, which are opportunities, what council is likely to require, and how retained trees might be incorporated. Often verbal, and often the most valuable step in the project.

  2. 02

    The report the approval names

    A Preliminary Arboricultural Report at design stage, or an Arboricultural Impact Assessment where the impact of the proposal on the trees has to be addressed. They are separate documents under AS 4970:2025 and are not interchangeable — the one you get is the one the condition, permit or certifier named.

  3. 03

    Protection documented for construction

    Tree Protection Plans and Tree Protection Specifications: what is fenced, how far out, what may happen inside the zone and what may not. Written so a site supervisor can act on it, not so it reads well in a folder.

  4. 04

    On site through the works

    As project arborist Adam reviews works around retained trees, supervises inside tree protection areas, attends root investigations and vac-ex, and liaises with the builder, the other consultants and council. Root pruning and plant healthcare treatments are carried out where the role requires them.

Talk to Adam before design is locked
An open trench beside a retained tree with structural roots left intact and exposed across the cut, the excavation shored and propped around them

Common questions

From developers, architects and builders

Ask Adam your question
  • Before the design is finalised, wherever possible. Trees identified early become part of the layout. Trees identified after the plans are locked become a constraint, and resolving one can mean redesign, delay or a changed approval pathway. Adam can be engaged for verbal advice at concept stage, well before any formal report is required.

  • It sets out the process for retaining, protecting and integrating trees through development. That includes preliminary tree assessment, a Preliminary Arboricultural Report at design stage, development design review, an Arboricultural Impact Assessment, Tree Protection Specifications and a Tree Protection Plan, the Notional Root Zone, Tree Protection Zone and Structural Root Zone, encroachment classification, protection measures, and monitoring and certification. Which of those your project needs depends on the site and the approval.

  • Sometimes, and it depends on the tree, the site and what is proposed. AS 4970:2025 classifies encroachment into the Notional Root Zone as minor, moderate or major, and the response differs at each level. It is a question for the project arborist against the actual tree and the actual works, not something that can be settled from a plan alone or from a calculator.

  • Acts as the named arborist through construction: reviewing works around retained trees, supervising work inside tree protection areas, attending root investigations and vac-ex, carrying out root pruning where it is appropriate, inspecting protection measures, and liaising with the builder, the other consultants and council. Where a condition requires a completion inspection, the same arborist closes it out.

  • All three, and often on the same project at different stages. Architects and designers usually want the constraints before the layout is set. Developers want to know what the approval pathway looks like. Builders want to know what they can and cannot do inside the fence. The advice does not change depending on who engaged him.

  • Send the wording through. Council conditions, permits and certifier requests name specific documents — a Preliminary Arboricultural Report, an Arboricultural Impact Assessment, a Tree Management Plan, a Declaration of Compliance — and they are not interchangeable. Reading what was actually asked for is the first job, and it is often the difference between one report and two.

Adam De Regt marking up site plans spread across the open tailgate of a ute, protection fencing behind him on the site

Contact

Send Adam the address and he will take it from there

For many protected vegetation questions, the property address is enough to start checking. Call, or send the details below.

Adam De RegtConsulting Arborist (AQF Level 5)
0415 105 592Call 0415 105 592info@adamsarboriculture.com.au

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