Root Pruning
Root Pruning & Excavation
Root exposure and pruning for approved construction work near protected trees, with arborist supervision where required.
Approved construction that enters a tree protection zone needs root pruning or air excavation when the permit conditions require it. We review the arborist report, drawings, and permit conditions before work begins. If you only need an arborist to attend your contractor's work, book construction supervision instead.
Who needs this service
- Contractors and builders whose excavation brings them within a protected tree's root zone
- Homeowners whose permit conditions require arborist-supervised root work before digging
- Developers with site plans that intersect municipal or heritage trees
- Property owners facing a Stop Work Order tied to unauthorized root disturbance
When you don't need it
- Branch or canopy pruning that doesn't disturb soil or roots
- Tree removal already approved under a separate removal permit
- Construction on a site with no protected trees within or adjacent to the footprint
- Soil amendment or aeration on a healthy, open-grown tree well away from any construction zone
Root pruning and air-spade digging
Root Pruning
Root pruning led by an ISA Certified Arborist when construction requires work within a tree's root zone.
- Clean cuts with sharp, sterilized tools
- Species-specific assessment of root importance
- Photo documentation for municipal compliance
Air Spade Excavation
Compressed air removes soil so roots can be exposed and assessed before cutting or mechanical excavation. The method reduces direct contact with roots.
- Roots exposed for assessment before further work
- Root mapping and assessment
- Used for utility and foundation work near trees
How It Works
Document Review
Before soil disturbance
We review the approved arborist report, construction drawings, permit conditions, and proposed excavation.
Root Work
Scheduled to fit your timeline
Root pruning, air spade excavation or both, led by an ISA Certified Arborist and coordinated with your construction schedule.
Documentation
Municipal-ready reports
Complete documentation of all work performed, including photos and arborist notes, ready for municipal inspection or permit compliance.
When You Need Root Management
Foundation & footing excavation near trees
Utility installation within the tree protection zone
Grading or landscaping near mature trees
Permit conditions requiring arborist-supervised root work
Root investigation before construction begins
Custom Quotes
We quote on the number of trees, the scope of excavation and your construction timeline.
Request a QuoteCall (647) 479-8778Serving Toronto & the Greater Toronto Area
In York Region, the Regional Forest Conservation By-law covers woodlands of 1 hectare or more, and woodlots of 0.2 to 1 hectare where the town delegated them to the Region. Aurora, Newmarket and Vaughan regulate their own woodlots. In Durham Region, the Woodland By-law 30-2020 covers woodlands of 1 hectare or more. Near valleys, ravines and waterways, TRCA also reviews development.
What it costs
There is no flat fee for root pruning. Scope varies too much by site. We quote after reviewing your plans or permit conditions. The main variables:
- Projects with more trees in the construction footprint take longer to assess and supervise.
- Excavation method: air spade work adds equipment time when hand-cutting isn't safe near dense root systems.
- Tight urban lots, grade changes, and existing underground utilities affect site access and total crew time.
- Post-work documentation varies by municipality. Markham requires a Tree Impact Report listing the roots removed and a compliance inspection one month after completion, which adds arborist hours.
- Rush scheduling to unblock a stalled crew costs more than work planned with lead time.
Share your site plan or permit conditions when you request a quote. That detail lets us scope accurately on the first pass.
Root pruning must happen before excavation, not during
Root Pruning & Excavation FAQ
When is root pruning required?
Root pruning is needed when construction, excavation or grading cuts roots inside the tree protection zone (TPZ) of a protected tree. Markham and Mississauga require an arborist on site for work inside the protection zone, and Oakville requires on-site monitoring that covers root pruning. No by-law requires an ISA Certified Arborist specifically.
What methods do you use for root pruning?
We use clean, manual cutting techniques with sharp tools to create smooth cuts that promote healthy regrowth. For sensitive excavation near roots, we use air spading (pneumatic excavation). It removes soil without damaging roots, so we can expose, assess and prune them.
What is air spading?
Air spading uses compressed air to safely remove soil around tree roots without cutting or tearing them. Arborists use it to expose roots for inspection or pruning, or to clear space for construction.
Will root pruning harm my tree?
Yes, any root cut does some harm. We keep it small. We decide which roots can go by size, species and structural role, and we follow ISA practice: clean cuts in the right places so the wounds close and roots regrow.
Do I need a permit for root pruning?
Yes, in Toronto, Mississauga, Burlington, Richmond Hill, Oakville, East Gwillimbury and Markham. Cutting roots or digging inside the protection zone counts as injury there. Work there needs a tree permit or must be covered by the approved construction permit.
Can you provide documentation for the municipality?
Yes. We provide detailed arborist documentation of all root pruning work including pre- and post-work photos, root sizes and locations, methodology used, and recommendations for ongoing tree care. Markham requires a Tree Impact Report listing the roots removed.
What areas do you serve?
We serve the entire Greater Toronto Area including Toronto, Mississauga, Oakville, Markham, Vaughan, Richmond Hill, Brampton, Burlington, Hamilton, Pickering, Caledon, King, Durham Region, and York Region.
Contact us or call (647) 479-8778 with any other question.
Related Services
Tree Protection & Fencing
Municipal-compliant tree protection fencing to safeguard trees during construction.
Learn More →Construction Reports
The written arborist document submitted before construction begins. Root pruning is the on-site work done during construction. Most permits require both.
Learn More →Construction Supervision
Book the arborist to attend contractor excavation or other approved work near protected roots.
Learn More →Get a quote
Tell us about your property. An ISA Certified Arborist will reply with a firm quote.
- Free consultation, response within 24 hours.
- We confirm the work and documentation in your quote.
- We do not sell tree removal.
Serving Toronto, the GTA and Southern Ontario.
ISA Certified Arborist · ISA Member · ISA Ontario Member