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Emergency Tree Services in Thornton, CO (2026)

Top 25 of 366 tree services, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 25 tree services on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

Tree on a power line: stay 30 feet away and call your utility. Tree on the house: leave the affected rooms.

The short answer

  1. 1

    #1 for emergency tree service in Thornton: Environmental Tree Care LLC, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency tree services in Thornton at a glance

Top emergency tree services in Thornton at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Environmental Tree Care LLC634.7★ (711)Denver, 13 mi away24/7
2AAA Emergency Tree Service624.8★ (278)Aurora, 10 mi away24/7
3Tree Service Denver LLC624.9★ (158)Aurora, 7 mi away24/7
4American Stumpbusters624.9★ (87)Westminster, 3 mi away24/7
5Arvada Tree Service LLC625.0★ (65)Arvada, 3 mi away24/7
6Arbor Doctor Tree Service625.0★ (69)Berkley, 4 mi away24/7
7John Egart's Tree Service624.7★ (117)Aurora, 5 mi away24/7
8Environmental Tree Care LLC614.8★ (251)Lakewood, 13 mi away24/7
9Robertson Tree Service614.8★ (115)Englewood, 8 mi away24/7
10LCM Tree Services LLC614.4★ (36)Thornton24/7

Call an emergency tree service in Thornton now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 25 emergency tree services in Thornton, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 366 is on the tree services page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  4. #4 American Stumpbusters

    Based in Westminster, 3 mi away

    62/100CR Score

    Ranked #4 because of its Google rating and trade focus: 4.9★ from 87 Google reviews, listed on Google as “Tree service”.

    • 4.9★ from 87 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3051 W 105th Ave #350771, Westminster, CO 80031
    View profile for American Stumpbusters(720) 261-8680

  13. #13 Expert Trees

    Based in Berkley, 3 mi away

    60/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.0★ from 104 Google reviews, listed on Google as “Tree service”.

    • 4.0★ from 104 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Expert Trees(720) 499-9208

  14. #14 Northwest Services

    Based in Denver, 2 mi away

    60/100CR Score

    Ranked #14 because of its Google rating and trade focus: 4.8★ from 24 Google reviews, listed on Google as “Tree service”.

    • 4.8★ from 24 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    8256 Conifer Rd, Denver, CO 80221
    View profile for Northwest Services(720) 628-9999

  16. #16 10 Star Tree Care

    Based in Boulder, 18 mi away

    60/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 153 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6985 Lodgepole Ct, Boulder, CO 80301
    View profile for 10 Star Tree Care(720) 626-8745

  18. #18 TLC Tree Expert Inc

    Based in Boulder, 18 mi away

    60/100CR Score

    Ranked #18 because of its Google rating and trade focus: 5.0★ from 140 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 140 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4845 Pearl E Cir #101, Boulder, CO 80301
    View profile for TLC Tree Expert Inc(303) 506-9834

How we ranked emergency tree services in Thornton

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 tree services are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency tree services in Thornton: questions

Which tree services in Thornton are open 24/7?

25 on this list post 24/7 hours, including Environmental Tree Care LLC, AAA Emergency Tree Service, Tree Service Denver LLC, American Stumpbusters and Arvada Tree Service LLC.

Who is ranked #1 for emergency tree service in Thornton, CO?

Environmental Tree Care LLC is #1, with a CR Score of 63 out of 100 on emergency weights.

How are emergency tree services in Thornton ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 tree services are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the tree service arrives?

Tree on a power line: stay 30 feet away and call your utility. Tree on the house: leave the affected rooms.

How many emergency tree services here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Thornton

  1. October 2026: CR Scores recalculated for 366 tree services serving Thornton.
  2. October 2026: 8 duplicate listings merged.

More emergency and tree service pages