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Emergency Tree Services in Union City, CA (2026)

Top 50 of 310 tree services, in emergency orderUpdated 0 paid placements in this rankingHow we rank

24 of the 50 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 Union City: Saunders Tree Service Inc, 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 Union City at a glance

Top emergency tree services in Union City at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Saunders Tree Service Inc635.0★ (76)Hayward, 6 mi away24/7
2BioScapes Tree Care Inc634.9★ (36)Union City24/7
3Castillo Tree Service Inc624.9★ (41)Hayward, 5 mi away24/7
4EC Tree Service Inc615.0★ (103)Redwood City, 16 mi away24/7
5ArborTech Inc.615.0★ (85)Ashland, 16 mi away24/7
6Preferred Expert Tree Service Inc605.0★ (66)Dublin, 15 mi away24/7
7JC Tree Service605.0★ (82)Antioch, 18 mi away24/7
8CalTreez604.2★ (15)Fremont, 3 mi away24/7
9Graham Tree Services Inc604.7★ (49)San Leandro, 13 mi away24/7
10NewVista Tree Service605.0★ (89)San Jose, 20 mi away24/7

Call an emergency tree service in Union City 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 50 emergency tree services in Union City, 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 310 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 EC Tree Service Inc

    Based in Redwood City, 16 mi away

    61/100CR Score

    Ranked #4 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 103 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    991 Round Hill Rd, Redwood City, CA 94061
    View profile for EC Tree Service Inc(650) 368-2044

  5. #5 ArborTech Inc.

    Based in Ashland, 16 mi away

    61/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 85 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 85 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for ArborTech Inc.(510) 871-8788

  8. #8 CalTreez

    Based in Fremont, 3 mi away

    60/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.2★ from 15 Google reviews, listed on Google as “Tree service”.

    • 4.2★ from 15 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    4555 Thornton Ave, Fremont, CA 94536
    View profile for CalTreez(510) 203-4334

  12. #12 Terry's Tree Service

    Based in Danville, 14 mi away

    59/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.7★ from 49 Google reviews, listed on Google as “Tree service”.

    • 4.7★ from 49 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    9000 Crow Canyon Rd #622, Danville, CA 94506
    View profile for Terry's Tree Service(925) 820-8733

  22. #22 New Sky Tree Service

    Based in San Jose, 18 mi away

    58/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.6★ from 36 Google reviews, listed on Google as “Tree service”.

    • 4.6★ from 36 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1185 Campbell Ave #25, San Jose, CA 95126
    View profile for New Sky Tree Service(650) 677-1461

Top 50 of 310 tree services by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

tree services in Union City, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Skyline Tree Experts584.9★ (49)23 mi
27Bigg Tree Rooter & Plumbing574.9★ (274)21 mi
28Beyond Tree Care Inc.575.0★ (9)12 mi
29ArborTech Inc.575.0★ (8)11 mi
30Cano Tree Service LLC575.0★ (12)14 mi
31MG TREE CARE575.0★ (10)13 mi
32Rosas Tree Service574.3★ (23)16 mi
33Cavara Tree Services575.0★ (11)14 mi
34A1 Tree care LLC575.0★ (22)20 mi
35Quality Tree Service Fremont575.0★ (3)6 mi
36LIFE Tree Service575.0★ (38)25 mi
37Encinal Tree Service Inc564.8★ (17)19 mi
38Garcia and Amigo Tree Service and Landscaping565.0★ (3)8 mi
39Oseguera Tree Service565.0★ (3)9 mi
40Cbc Tree Service563.8★ (18)17 mi
41Peninsula Tree Care565.0★ (5)15 mi
42Junior's Tree Services Inc.554.2★ (19)22 mi
43P & J Tree Service Inc.554.5★ (17)23 mi
44Mendoza's Professional Tree Service555.0★ (8)20 mi
45Absolute Best Care Tree Service555.0★ (15)25 mi
46Expert Tree Service555.0★ (7)19 mi
47Redwood City Tree Service Pros555.0★ (4)16 mi
48Zazueta Tree Specialists555.0★ (13)24 mi
49Louis Tree Service555.0★ (5)18 mi
50Tree of Life Pro Services555.0★ (7)5 mi

How we ranked emergency tree services in Union City

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 Union City: questions

Which tree services in Union City are open 24/7?

24 on this list post 24/7 hours, including Saunders Tree Service Inc, BioScapes Tree Care Inc, Castillo Tree Service Inc, EC Tree Service Inc and ArborTech Inc..

Who is ranked #1 for emergency tree service in Union City, CA?

Saunders Tree Service Inc is #1, with a CR Score of 63 out of 100 on emergency weights.

How are emergency tree services in Union City 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 Union City

  1. October 2026: CR Scores recalculated for 310 tree services serving Union City.
  2. October 2026: 6 duplicate listings merged.

More emergency and tree service pages