62/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 144 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Excavating Contractors in Union City, CA (2026)
88 excavating contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Union City: Diaz Hauling, Inc., CR Score 62/100; 5.0★ from 144 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #2 of 88.
- 5
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 2,560 Google reviews at 4.8★, the most of 88 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
88 Union City excavating contractors are ranked here by CR Score, from ten published factors. 15 are open 24/7, 56 open Saturdays and 39 open Sundays, based on posted hours. The median Google rating is 5.0★ across 88 rated businesses.
Top 10 excavating contractors in Union City at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Diaz Hauling, Inc. | 62 | 5.0★ (144) | Hayward, 3 mi away | Sat · Sun · Evenings | Overall |
| 2 | Roto-Rooter Plumbing & Water Cleanup | 60 | 5.0★ (510) | Union City | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 58 | 4.8★ (1,239) | East Palo Alto, 11 mi away | 24/7 | — |
| 4 | Roto-Rooter Plumbing & Water Cleanup | 57 | 4.9★ (222) | Fremont, 5 mi away | 24/7 | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.8★ (2,560) | Oakland, 20 mi away | 24/7 | Most reviews |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.8★ (1,594) | Livermore, 18 mi away | 24/7 | — |
| 7 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.8★ (229) | Hayward, 6 mi away | 24/7 | — |
| 8 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.8★ (1,039) | Santa Clara, 16 mi away | 24/7 | — |
| 9 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.8★ (781) | Sunnyvale, 15 mi away | 24/7 | — |
| 10 | Roto-Rooter Plumbing & Water Cleanup | 56 | 4.9★ (339) | San Ramon, 12 mi away | 24/7 | — |
The 88 best excavating contractors in Union City, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Union City
60/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 510 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in East Palo Alto, 11 mi away
58/100CR ScoreRanked #3 because of its Google rating and review volume: 4.8★ from 1,239 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fremont, 5 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 222 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakland, 20 mi away
56/100CR ScoreRanked #5 because of its Google rating and review volume: 4.8★ from 2,560 Google reviews, the most in Union City.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Livermore, 18 mi away
56/100CR ScoreRanked #6 because of its Google rating and review volume: 4.8★ from 1,594 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 6 mi away
56/100CR ScoreRanked #7 because of its Google rating and review volume: 4.8★ from 229 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Santa Clara, 16 mi away
56/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 1,039 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sunnyvale, 15 mi away
56/100CR ScoreRanked #9 because of its Google rating and review volume: 4.8★ from 781 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Ramon, 12 mi away
56/100CR ScoreRanked #10 because of its Google rating and review volume: 4.9★ from 339 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Mateo, 16 mi away
56/100CR ScoreRanked #11 because of its Google rating and review volume: 4.8★ from 947 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#12 wl demo corp
Based in Oakland, 1 mi away
54/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#13 AIMS Companies
Based in San Leandro, 12 mi away
54/100CR ScoreRanked #13 because of its Google rating and trade focus: 2.8★ from 4 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Alameda, 19 mi away
53/100CR ScoreRanked #14 because of its Google rating and review volume: 5.0★ from 191 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South San Francisco, 23 mi away
53/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 25 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Newark, 5 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 16 Google reviews, listed on Google as “Paving contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 6 mi away
53/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.6★ from 21 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Milpitas, 15 mi away
53/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 121 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Pleasanton, 9 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 3.2★ from 6 Google reviews, listed on Google as “Excavating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in San Carlos, 14 mi away
52/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.3★ from 10 Google reviews, listed on Google as “Excavating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in San Bruno, 21 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Oakland, 13 mi away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Milford, 5 mi away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Demolition contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 4 mi away
51/100CR ScoreRanked #24 because of its Google rating and trade focus: 2.8★ from 13 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Atherton, 3 mi away
50/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Excavating contractors ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 88 ranked excavating contractors here; the rest are on their profiles.
Also serving Union City
20 more excavating contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Asphalt Paving Union City | In Union City | |
| Axilfix | 5.0★ (5) | In Union City |
| Badger Infrastructure Solutions - San Jose, CA | 3.0★ (2) | 17 mi |
| Bay Area Hydrovac | 1.0★ (2) | 6 mi |
| BREAKGROUND EXCAVATING | 5.0★ (2) | 17 mi |
| Demolition And Excavation Heroes | 5.0★ (2) | 17 mi |
| Double M Construction | In Union City | |
| Extra Mile Excavating | 3.0★ (2) | 11 mi |
| Fanfa Inc | 5.0★ (2) | 9 mi |
| Kent Kitchen Renovations Union City | 5.0★ (2) | In Union City |
| Leal Construction & Remodeling | 5.0★ (1) | In Union City |
| Luciano Concrete Construction | 5.0★ (2) | 15 mi |
| Matthew Valle Construction | MVC | In Union City | |
| Morgan Hill Models | In Union City | |
| Musk Construction Bathroom Remodeling | Union City | 5.0★ (6) | In Union City |
| Production Excavating | 5.0★ (2) | 15 mi |
| Sterling Air HVAC | In Union City | |
| Union City Roof Repair | 4.9★ (46) | In Union City |
| V&B Grading Inc. | 5.0★ (2) | 8 mi |
| W. M. Lyles Co. | In Union City |
How we ranked Union City excavating contractors
We scored 88 Union City excavating contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Union City data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Excavating contractors in Union City: frequently asked questions
Who is the best excavating contractor in Union City?
By CR Score, the highest-ranked excavating contractor in Union City, CA is Diaz Hauling, Inc. with a CR Score of 62/100. It has 5.0★ from 144 Google reviews. It is open 7 days a week. Roto-Rooter Plumbing & Water Cleanup (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 88 excavating contractors on ten factors, last updated November 3, 2026.
How many excavating contractors are there in Union City?
ContractorsRanked ranks 88 excavating contractors serving Union City, CA. 1 of them is based in Union City; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which excavating contractors in Union City are open 24/7?
15 ranked excavating contractors in Union City post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Water Cleanup (#2), Roto-Rooter Plumbing & Water Cleanup (#3) and Roto-Rooter Plumbing & Water Cleanup (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which excavating contractors in Union City work on weekends?
56 of 88 ranked excavating contractors post Saturday hours and 39 post Sunday hours. The highest-ranked open Saturdays are Diaz Hauling, Inc. (#1), Roto-Rooter Plumbing & Water Cleanup (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Union City excavating contractors have?
The median Google rating among 88 rated excavating contractors in Union City is 5.0★, with a median of 11 reviews. Roto-Rooter Plumbing & Water Cleanup has the most, 2,560 reviews, and ranks #5. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank excavating contractors?
Each excavating contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do excavating contractors outside Union City count in this ranking?
Yes, if they are within 25 mi of the Union City city center, our service radius for excavating contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can excavating contractors pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Union City
- November 2026: CR Scores recalculated for 88 excavating contractors serving Union City.
- November 2026: 2 duplicate listings merged.
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