ArborProof

Checked before you call.

Oshawa, Ontario · Updated September 2026

Best Tree Services in Oshawa

The three highest-scoring tree companies that serve Oshawa, ranked by ARB Score. Every company in Ontario is checked the same way, on insurance coverage, arborist credentials, experience and reviews. No company can pay to be at the top of this page.

12companies serve Oshawa
4with WSIB clearance confirmed
4.8average ARB Score here

Oshawa’s top 3 by ARB Score

1

Evans Tree Work

Serves Oshawa, Clarington, Whitby, Ajax and Pickering and more

4.9 · 112 Google reviewsWSIB clearance not issued on the date checked
Not yet verified by the businessThese details come from our own research. Is this your business? Claim this listing
SpecializationsHighlighted: what they specialize in (up to 6)
Call 905-718-9528Visit websiteFull profile →
10ARB Score

Score breakdown

Positive client experiences112 Google reviews
3
Compliance & transparencyInsurance proof and prices not posted yet
0
Years of experience25+ years in business
6
Education & trainingNo arborists listed in the ISA directory
0
Local & independentFounded in Canada
1

The ISA directory is opt-in, so a company may have certified arborists we can't see. Ask.

2

Davey Tree Care Services (East Toronto office)

Serves Oshawa, Scarborough, Stouffville, North York and Pickering and more

4.7 · 80 Google reviewsWSIB clearance confirmed · to Nov 19, 2026
Not yet verified by the businessThese details come from our own research. Is this your business? Claim this listing
SpecializationsHighlighted: what they specialize in (up to 6)
Call 416-248-9644Visit websiteFull profile →
9ARB Score

Score breakdown

Positive client experiences80 Google reviews
2
Compliance & transparencyWSIB clearance confirmed
1
Years of experience25+ years in business
6
Education & trainingNo arborists listed in the ISA directory
0
Local & independentNot founded in Canada
0

The ISA directory is opt-in, so a company may have certified arborists we can't see. Ask.

3

Cross Brothers Tree Service

Serves Oshawa, Whitby, Pickering and Ajax

WSIB clearance confirmed · to Nov 19, 2026
Not yet verified by the businessThese details come from our own research. Is this your business? Claim this listing
SpecializationsHighlighted: what they specialize in (up to 6)
Call 905-725-5415Visit websiteFull profile →
8ARB Score

Score breakdown

Positive client experiencesNo Google reviews found
0
Compliance & transparencyWSIB clearance confirmed
1
Years of experience25+ years in business
6
Education & trainingNo arborists listed in the ISA directory
0
Local & independentFounded in Canada
1

The ISA directory is opt-in, so a company may have certified arborists we can't see. Ask.

Ties are broken by number of Google reviews.

More companies serving Oshawa

4Darlington Tree ServiceDurham Region · 4.6 from 27 reviewsNot verified by businessWSIB confirmed75Dreamworks Tree ServicesDurham RegionNot verified by businessWSIB not confirmed56Royal Tree Service OshawaDurham Region · 5.0 from 193 reviewsNot verified by businessWSIB not confirmed47Tree Menders (Markham)Markham · 4.0 from 134 reviewsNot verified by businessWSIB not confirmed48About the Cut Tree ServiceDurham Region · 5.0 from 76 reviewsNot verified by businessWSIB confirmed4See all 12 companies serving Oshawa on the map →
Before you cut

Oshawa’s private tree rules

No permit needed for private trees

Oshawa has no by-law requiring a permit to remove a tree on a regular private lot. Only City-owned trees and large woodlands (1 hectare or more, regulated by Durham Region) are protected.

Whole city

No private tree permit

The City does not require a permit to prune or remove a tree on your own property. Owners are responsible for their own trees.

City-owned trees

City trees are protected

City Trees By-law 78-2008 bans injuring or removing trees on City land, including boulevard trees. A tree is a City tree if half or more of its trunk is on City property; these are usually within 2 m of the curb or 1.5 m of the sidewalk.

All of Durham Region

Woodlands 1 ha and larger

Durham Region's Woodland By-law 30-2020 requires a Region permit to cut in woodlands of 1 ha (2.5 acres) or more. A clear-cutting permit is needed to clear more than 0.1 ha.

Anywhere in Ontario

Trees on a property line

A tree whose trunk sits on the line belongs to both neighbours. Ontario’s Forestry Act says you need your neighbour’s consent before removing or injuring it.

Not sure if you need a permit?

Ask the municipality before any work starts. A good tree company will also check for you and tell you who applies for the permit.

Service Oshawa

905-436-3311Official information page →

Summary checked September 2026. It’s a plain-language guide, not legal advice. Bylaws change, so confirm with the municipality before you remove a tree.

Sources
Before you hire

What to check before you hire a tree service

Tree work is dangerous, and it’s expensive to fix when it goes wrong. Six questions worth asking any company, including the ones on this page.

  1. Ask for a WSIB clearance certificate and proof of liability insurance

    Tree work is one of the most dangerous jobs out there. We do our best on our end, but these certificates can change before we have a chance to update them. Some good companies will give them to you without you even having to ask. Bonus!

  2. Find out who will actually do the work

    You may get a Certified Arborist as your salesperson, but will the same be true of the person who works on your property? You won't know until you ask. A Certified Arborist may cost more, but it can cost a lot more if the work is done wrong and the tree dies early or your property is damaged.

  3. Get the quote in writing

    It should say exactly which trees, and whether cleanup, wood removal, stump grinding and so on are included. The more detailed the quote, the better.

  4. Ask who handles the permit

    If a bylaw applies, agree up front who applies for the permit and who pays the fee. Removing a protected tree without one usually means a fine for the property owner, not the tree company.

  5. If money is tight, try this

    See if the work can be scheduled in a slower season for a lower price. Clear obstacles (fences, gates, lawn ornaments, plants) before the crew arrives. Find someone online, such as on Facebook Marketplace, who will take the wood for free. Or change the scope of work, for example pruning only the lower half of the tree instead of the whole tree.

  6. Trees near power lines are a utility job

    If branches touch or come close to a hydro line, call your local hydro utility (the one on your electricity bill) first. Only crews the utility approves can work near power lines.

How we pick Oshawa’s top 3

We rank every company whose service area includes Oshawa by ARB Score. The score counts Google reviews, WSIB clearance, published insurance and pricing, years in business, ISA-verified arborists and Canadian ownership. We look up everything except insurance and pricing, which a company tells us itself.

Tree services near Oshawa

WhitbyAjaxClaringtonPickeringMarkhamRichmond Hill

ARB Scores reflect public records and research on the date checked. Always confirm insurance, certification and WSIB coverage directly with a company before you hire it.