Tree Preservation Plans in Mississauga
A tree preservation plan is a formal document that identifies which trees on or near a construction site will be retained, how they will be protected during construction, and what monitoring is required afterward. In Mississauga, tree preservation plans are required by the City before certain building permits are issued particularly for new builds, additions, severances and development applications where protected trees are within the construction impact zone.
Getting the plan done right matters. A poorly prepared plan gets rejected by the City's Urban Forestry staff and delays your permit. A well-prepared plan gets accepted and gives your contractor a clear set of instructions that actually protects the trees. Our arborist has prepared tree preservation plans for residential and commercial projects across Mississauga and knows exactly what the City expects.
What Is a Tree Preservation Plan?
A tree preservation plan starts with a tree inventory a survey of all trees on and immediately adjacent to the property that may be affected by the proposed work. Each tree is tagged, measured, identified by species, assessed for condition, and mapped on a site plan. The plan then identifies which trees are to be retained and protected, which are to be removed (and what permits are required for removal), and what protection measures will be in place during construction.
The protection measures section covers tree protection fencing placement, construction exclusion zones, soil and root protection specifications, construction sequencing near retained trees, and monitoring requirements during the active construction phase. After construction, the plan typically requires a post-construction assessment to confirm that retained trees remain in acceptable condition.
When Mississauga Requires a Tree Preservation Plan
The City of Mississauga may require a tree preservation plan as a condition of several types of permits and approvals. These include building permits for new construction on lots with existing protected trees, permits for additions or accessory structures close to protected trees, site plan approvals, minor variance applications, and severance applications where tree coverage is a consideration.
The trigger is typically proximity if your proposed construction footprint, grading, excavation or service trenching comes within the critical root zone of a protected tree (trees 15cm diameter or larger on private property), a tree preservation plan will likely be required. The sooner you engage an arborist in the design process, the better a tree preservation plan done before the design is finalized can influence the layout in ways that make the plan easier to satisfy.
Tree Protection Fencing
The most important physical protection measure for trees during construction is the installation of proper tree protection fencing before any work begins on site. Fencing must be installed at the drip line of the tree or at a minimum distance from the trunk calculated from the tree's diameter whichever is greater. The fence must remain in place for the entire duration of construction and must not be moved without arborist approval.
Inside the tree protection zone, there should be no storage of materials, no machinery operation, no soil disturbance, no trenching and no changes to grade. Compaction of the soil within the root zone is one of the most common and damaging construction impacts on trees and one of the most preventable with proper fencing and site management.
We supply and install tree protection fencing as part of our tree preservation plan services. We can also conduct site monitoring visits during construction to confirm that the protection measures are being followed and to document compliance for the City.
ISA Tree Risk Assessments
Some tree preservation plans require an ISA tree risk assessment for trees that are being retained near active construction. A risk assessment evaluates the likelihood and consequence of tree failure it is a more formal and detailed document than a general condition assessment. The ISA's Basic Risk Assessment methodology is the standard framework used in Mississauga for this purpose.
We conduct ISA-format risk assessments as part of tree preservation plan preparation and as standalone assessments for homeowners, property managers and legal proceedings. The assessment results in a formal risk rating and a set of recommended actions retain as-is, prune to mitigate, cable and monitor, or remove with a written justification for each recommendation.
Tree Protection Fencing Installation
We don't just prepare the plan document: we install the tree protection fencing on site. Once the preservation plan is approved and the permit is in place, we supply and install the orange construction snow fence TPZ barriers at the exact locations specified in the plan, attach the required signage to each panel, and walk the contractor through which areas are off limits for equipment access, material storage and soil stockpiling. Fencing installation is available as part of our complete plan-plus-installation package, or as a standalone service where a plan has already been prepared by another arborist and you simply need the physical barriers erected to a specific layout before construction starts.
Frequently Asked Questions About Tree Preservation Plans in Mississauga
When in the construction process should I get a tree preservation plan?
As early as possible ideally before the design is finalized. Bringing an arborist in at the design stage means that the location of the structure, the foundation type, the driveway layout and the service connections can all be influenced by tree locations. This is much easier and cheaper than trying to design a preservation plan around a footprint that has already been fixed. Once permits are in, options become limited.
What if the trees I need to protect belong to my neighbour?
Adjacent trees trees whose trunks are on the neighbouring property but whose roots and canopy extend onto yours are still subject to protection requirements if they meet the diameter threshold. Your construction cannot damage a neighbour's protected tree. The tree preservation plan will address these trees the same way it addresses on-site trees, and your contractor is responsible for not damaging them during construction.
How long does it take to prepare a tree preservation plan in Mississauga?
A straightforward residential plan typically takes seven to ten business days from the site visit. Larger or more complex projects multiple trees, development applications, projects requiring coordination with the City's Urban Forestry staff take longer. We will give you a realistic timeline when we assess the scope, and we will flag anything that might extend the turnaround.
Do you supply and install the tree protection fencing?
Yes. We supply, install and remove tree protection fencing as part of our service. We can also conduct monitoring site visits during the construction phase to document that the protection measures are being maintained which is sometimes required as a condition of the City's approval. If you need a letter confirming compliance at the end of the project, we provide that too.
More Mississauga Tree Services
Get a Free Estimate for Tree Work in Mississauga
We serve all of Mississauga including Port Credit, Lorne Park, Mineola, Streetsville, Erin Mills, Clarkson, Cooksville, Meadowvale and Malton. Our certified arborist visits your property, assesses the permit requirements that apply, and provides a firm quote before any work begins.