Oakville protects its trees more closely than most towns, and its older neighbourhoods are full of big red oaks, sugar maples and spruce that have outgrown their spot. Pruning is how you keep them healthy and off the roof without taking them down. Here is what it costs and the Town rules that shape how the work is done.
2026 tree trimming prices in Oakville
| Job | Typical 2026 price | What it usually involves |
|---|---|---|
| Shrub pruning | $45 - $120 per shrub | Hand pruners and loppers, depends on species and how long since the last cut |
| Cedar hedge shaping | $18 - $32 per linear metre | Trimmed, clippings hauled, edges cleaned up |
| Small tree, under 6 m (about 20 ft) | $240 - $560 | Ladder and pole saw work, no bucket truck |
| Medium tree, 6 to 12 m (20 to 40 ft) | $580 - $1,400 | Climbing with ropes and saddle, or a lift if there is access |
| Large tree, over 12 m (40 ft) | $1,400 - $3,800 | Climbing crew or aerial lift, branches lowered on ropes over roofs and fences |
Those prices include chipping and taking the branches away. Expect the higher end when a big tree leans over the house or a neighbour's garage, when the only way into the backyard is a narrow side path, or when a tree has gone a decade or more without care. Booking several trees at once, or letting us leave the wood chips for mulch, keeps the price down.
Mature lots in Old Oakville, Bronte, Morrison and Eastlake often need climbing work, because big trees sit close to the house and there is no room for a lift. That pushes them toward the top of the range. Newer subdivisions in Glen Abbey, River Oaks, West Oak Trails and north Oakville tend to have younger trees, where a few hundred dollars of structural pruning now saves a much bigger bill later.
The 25% rule in Oakville's by-law
The Private Tree Protection By-law 2017-038 requires a permit to remove a private tree with a trunk of 15 cm or more at breast height. Pruning does not need a permit, but the by-law also regulates injuring trees, and it describes what acceptable pruning looks like:
- removing dead limbs, keeping the tree structurally sound and balanced, or encouraging its natural form;
- taking off no more than 25% of the live branches, as part of good arboricultural practice;
- not pruning just to let in more light or make more space, unless the Town approves it.
In plain terms, a crew that strips a protected tree down to a pole, or tops it to get more sun on the pool, may be injuring it under the by-law, and the homeowner can end up answering for it. A proper job stays well under a quarter of the live crown in any one year. If a tree needs more taken off than that, the work is spread over two or three years, or you talk to the Town first.
There is one useful exemption. Pruning branches that interfere with utility wires, buildings or other structures is allowed, as long as it is done to good arboricultural standards. Cutting back limbs that rub the roof or block the eavestroughs is fine; using that as a reason to remove half the tree is not.
Town trees and the ten-year pruning cycle
Oakville prunes all of its roughly 108,000 street trees on a ten-year cycle under its rotational tree maintenance program. Certified arborists inspect each area a year ahead, and residents get a letter before their Town trees are pruned. Remove lights, decorations and swings from the Town tree before the crew arrives.
Town trees are not always at the curb. Some grow on Town land on the house side of the sidewalk, which looks like your front lawn. The Town will not prune your private trees, and you should not prune its trees either. If the tree out front is the Town's and needs attention between cycles, call ServiceOakville at 905-845-6601. We check ownership before quoting any front-yard tree.
Hydro lines in Oakville
The Town also does hydro line clearing for Oakville Hydro, on a four-year cycle. Crews keep at least 3 m between branches and primary power lines and 1 m from secondary lines, the Electrical Safety Authority standard. Where lines run along rear yards, Oakville Hydro has an easement that lets its arborist reach the trees, and the Town sometimes has to prune private trees that have grown too close to the wire.
We do not prune branches near energized lines. If part of your tree is close to a wire, we prune the rest and you contact Oakville Hydro for the section near the line. If the wire from the pole to your house is buried in branches, mention it when you ask for a quote and we will tell you who to call.
Types of pruning, in plain words
Ask any crew which of these they plan to do, and how much of each tree will come off. If they cannot say, keep looking.
- Cleaning out deadwood: dead, broken and diseased limbs only. Low risk, and usually the first job on a neglected tree.
- Raising the canopy: lower limbs removed so the driveway, sidewalk or roof is clear. On a protected tree, this counts toward the 25%.
- Light thinning: a few crossing or crowded inner branches removed. Heavy thinning, often sold as "lion-tailing", strips the inside of the tree and leaves it top-heavy.
- Reducing length: long limbs cut back to a strong side branch, the right way to make a tree a little smaller or lift it off the house.
- Training a young tree: choosing one central leader and spacing the main limbs early. It costs little and prevents the split trunks we see on so many twenty-year-old maples.
We do not top trees. Topping cuts the leaders to stubs, which in Oakville is also likely to break the 25% guideline, and it leaves a tree that is weaker and more dangerous within a few years.
Oaks, oak wilt and timing
Oakville has a lot of red and black oaks, and those are the most vulnerable to oak wilt, a fungal disease that kills oaks quickly. Beetles that carry it are drawn to fresh pruning cuts in spring and early summer. Ontario's advice is not to prune or wound oaks from April to July. We go further and only prune oaks from November to March, when there is no risk.
For other trees:
- November to March is the best window for most shade trees. The structure is easy to see with the leaves off and no birds are nesting.
- Maples bleed sap if cut in late winter. It is harmless, but early summer is fine too.
- Magnolias, serviceberries and redbuds are pruned right after they flower.
- Spruce and pine need very little; mostly deadwood and lower limbs. Never cut a conifer's top.
- Cedar hedges are trimmed in late spring or early summer, and never cut back into bare brown wood, because cedar will not regrow from it.
Any heavy pruning between early April and late August needs a nest check first. The federal nesting period guidance puts the main nesting season in that window, and disturbing an active nest of a protected bird is illegal.
Neighbour's branches over your yard
Branches hanging over your side are a common reason for calls in Oakville. You can usually have overhanging branches trimmed back to the property line, but not in a way that injures the tree, and the 25% limit still applies to the tree as a whole. If the trunk sits on the line, the tree is jointly owned under Ontario's Forestry Act, and you need your neighbour's consent. Talk to them first. Often the easiest answer is to split one visit and do the whole tree properly.
What a good trimming quote includes
- Each tree, the type of pruning, and roughly what share of the crown comes off
- A commitment to stay within the by-law's 25% guideline on protected trees
- Proper cuts at the branch collar, no stubs, and no climbing spikes on a tree that is staying
- Oak work booked only between November and March
- Chipping, hauling and cleanup, insurance and WSIB
Where we prune in Oakville
Old Oakville, Bronte, Eastlake, Morrison, Clearview, Glen Abbey, River Oaks, West Oak Trails, Joshua Creek, Palermo and north Oakville. If a tree cannot be saved, our Oakville tree removal page explains the permit and fees.
Hedges too? See hedge trimming in Oakville including the Town's visibility triangles.
Frequently asked questions
How much does tree trimming cost in Oakville?
About $240 to $560 for a small tree, $580 to $1,400 for a medium tree and $1,400 to $3,800 for a large tree over 12 m, cleanup included.
Do I need a permit to prune a tree in Oakville?
Not for proper pruning. A removal permit is needed for trees 15 cm or more across, and over-pruning can count as injuring a protected tree.
How much of a tree can you prune in Oakville?
The by-law treats pruning of no more than 25% of the live branches as good practice. Anything more should be spread over several years or discussed with the Town.
How often does Oakville prune street trees?
Every street tree is pruned on a ten-year cycle, and residents get a letter first. Call ServiceOakville at 905-845-6601 if one needs attention sooner.
When should oak trees be pruned in Oakville?
Only in late fall and winter. Do not prune or wound oaks from April to July, because of oak wilt.
Who trims trees near hydro lines in Oakville?
The Town does it for Oakville Hydro on a four-year cycle, keeping 3 m from primary lines and 1 m from secondary lines.