60/100CR Score
Ranked #1 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.
Best Excavating Contractors in San Mateo, CA (2026)
64 excavating contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in San Mateo: Roto-Rooter Plumbing & Water Cleanup, CR Score 60/100; 4.8★ from 947 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #3 of 64.
- 4
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 2,560 Google reviews at 4.8★, the most of 64 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
64 San Mateo excavating contractors are ranked here by CR Score, from ten published factors. 13 are open 24/7, 45 open Saturdays and 33 open Sundays, based on posted hours. The median Google rating is 5.0★ across 64 rated businesses.
Top 10 excavating contractors in San Mateo at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Water Cleanup | 60 | 4.8★ (947) | San Mateo | 24/7 | Overall |
| 2 | Diaz Hauling, Inc. | 59 | 5.0★ (144) | Hayward, 15 mi away | Sat · Sun · Evenings | — |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 57 | 4.8★ (1,239) | East Palo Alto, 12 mi away | 24/7 | Emergencies |
| 4 | Roto-Rooter Plumbing & Water Cleanup | 57 | 4.8★ (2,560) | Oakland, 17 mi away | 24/7 | Most reviews |
| 5 | Harris Excavation | 57 | 5.0★ (25) | South San Francisco, 9 mi away | Sat · Sun · Evenings | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 56 | 5.0★ (510) | Union City, 15 mi away | 24/7 | — |
| 7 | Dmp construction / Demoliton | 55 | 5.0★ (5) | San Bruno, 5 mi away | Sat · Sun · Evenings | — |
| 8 | Roto-Rooter Plumbing & Water Cleanup | 54 | 4.8★ (229) | Hayward, 12 mi away | 24/7 | — |
| 9 | Roto-Rooter Plumbing & Water Cleanup | 54 | 5.0★ (191) | Alameda, 16 mi away | 24/7 | — |
| 10 | DoBel Construction Inc. | 54 | 4.3★ (10) | San Carlos, 6 mi away | — | — |
The 64 best excavating contractors in San Mateo, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Hayward, 15 mi away
59/100CR ScoreRanked #2 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.
Based in East Palo Alto, 12 mi away
57/100CR 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 Oakland, 17 mi away
57/100CR ScoreRanked #4 because of its Google rating and review volume: 4.8★ from 2,560 Google reviews, the most in San Mateo.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in South San Francisco, 9 mi away
57/100CR ScoreRanked #5 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 Union City, 15 mi away
56/100CR ScoreRanked #6 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 San Bruno, 5 mi away
55/100CR ScoreRanked #7 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 Hayward, 12 mi away
54/100CR ScoreRanked #8 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 Alameda, 16 mi away
54/100CR ScoreRanked #9 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 San Carlos, 6 mi away
54/100CR ScoreRanked #10 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 Sunnyvale, 22 mi away
54/100CR ScoreRanked #11 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 Santa Clara, 24 mi away
54/100CR ScoreRanked #12 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.
#13 AIMS Companies
Based in San Leandro, 13 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.
#14 VanGo Rooter
Based in South San Francisco, 8 mi away
53/100CR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 112 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Mateo
53/100CR ScoreRanked #15 because of its Google rating and review volume: 5.0★ from 143 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Fremont, 21 mi away
53/100CR ScoreRanked #16 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 San Ramon, 24 mi away
53/100CR ScoreRanked #17 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 Richmond, 24 mi away
52/100CR ScoreRanked #18 because of its Google rating and review volume: 4.8★ from 313 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Hayward, 12 mi away
52/100CR ScoreRanked #19 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 South San Francisco, 7 mi away
51/100CR ScoreRanked #20 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 Redwood City, 7 mi away
51/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.6★ from 5 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Jose, 21 mi away
51/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Excavating contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Francisco, 12 mi away
51/100CR ScoreRanked #23 because of its Google rating and trade focus: 3.7★ from 3 Google reviews, listed on Google as “Excavating contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in San Francisco, 12 mi away
50/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 32 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#25 wl demo corp
Based in Oakland, 17 mi away
50/100CR ScoreRanked #25 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.
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 64 ranked excavating contractors here; the rest are on their profiles.
Also serving San Mateo
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 |
|---|---|---|
| 1114 S Grant Street, San Mateo | In San Mateo | |
| Bayridge Construction | In San Mateo | |
| Benjamin Franklin Plumbing | 5.0★ (9) | In San Mateo |
| De La Vega plumbing and construction | In San Mateo | |
| Excel Site Services | 5.0★ (2) | 8 mi |
| Fanfa Inc | 5.0★ (2) | 12 mi |
| G-Core Engineering | 5.0★ (2) | 10 mi |
| Granite Excavation & Demolition | 4.5★ (2) | 7 mi |
| HER Construction | 5.0★ (8) | In San Mateo |
| KNIGHTLY CONSTRUCTION, INC. | In San Mateo | |
| Luciano Concrete Construction | 5.0★ (2) | 7 mi |
| Mark John Construction LLC | In San Mateo | |
| Mike's Construction | In San Mateo | |
| Nelson Brush Studio | 5.0★ (1) | In San Mateo |
| Ozone Service San Mateo | In San Mateo | |
| S A S Bobcat Service | 5.0★ (1) | In San Mateo |
| SAME DAY GARAGE DOOR REPAIR & SERVICE OF SAN MATEO | 5.0★ (2) | In San Mateo |
| San Mateo HVAC Repair Services | In San Mateo | |
| Volt Automatic Gates | 5.0★ (4) | In San Mateo |
| WP Proline Construction | 5.0★ (1) | In San Mateo |
How we ranked San Mateo excavating contractors
We scored 64 San Mateo 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 San Mateo 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 San Mateo: frequently asked questions
Who is the best excavating contractor in San Mateo?
By CR Score, the highest-ranked excavating contractor in San Mateo, CA is Roto-Rooter Plumbing & Water Cleanup with a CR Score of 60/100. It has 4.8★ from 947 Google reviews. It is open 24/7. Diaz Hauling, Inc. (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 64 excavating contractors on ten factors, last updated November 3, 2026.
How many excavating contractors are there in San Mateo?
ContractorsRanked ranks 64 excavating contractors serving San Mateo, CA. 3 of them are based in San Mateo; 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 San Mateo are open 24/7?
13 ranked excavating contractors in San Mateo post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Water Cleanup (#1), 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 San Mateo work on weekends?
45 of 64 ranked excavating contractors post Saturday hours and 33 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Water Cleanup (#1), Diaz Hauling, Inc. (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do San Mateo excavating contractors have?
The median Google rating among 64 rated excavating contractors in San Mateo is 5.0★, with a median of 12 reviews. Roto-Rooter Plumbing & Water Cleanup has the most, 2,560 reviews, and ranks #4. 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 San Mateo count in this ranking?
Yes, if they are within 25 mi of the San Mateo 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 San Mateo
- November 2026: CR Scores recalculated for 64 excavating contractors serving San Mateo.
- November 2026: 2 duplicate listings merged.
More excavating contractors and San Mateo pages
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