59/100CR Score
Ranked #1 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.
Best Excavating Contractors in South San Francisco, CA (2026)
72 excavating contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in South San Francisco: Harris Excavation, CR Score 59/100; 5.0★ from 25 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 72.
- 2
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 2,560 Google reviews at 4.8★, the most of 72 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
72 South San Francisco excavating contractors are ranked here by CR Score, from ten published factors. 8 are open 24/7, 47 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 5.0★ across 72 rated businesses.
Top 10 excavating contractors in South San Francisco at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Harris Excavation | 59 | 5.0★ (25) | South San Francisco | Sat · Sun · Evenings | Overall |
| 2 | Roto-Rooter Plumbing & Water Cleanup | 58 | 4.8★ (2,560) | Oakland, 13 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 58 | 4.8★ (947) | San Mateo, 9 mi away | 24/7 | — |
| 4 | Diaz Hauling, Inc. | 58 | 5.0★ (144) | Hayward, 19 mi away | Sat · Sun · Evenings | — |
| 5 | Dmp construction / Demoliton | 56 | 5.0★ (5) | San Bruno, 3 mi away | Sat · Sun · Evenings | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 55 | 5.0★ (191) | Alameda, 12 mi away | 24/7 | — |
| 7 | Roto-Rooter Plumbing & Water Cleanup | 55 | 4.8★ (1,239) | East Palo Alto, 20 mi away | 24/7 | — |
| 8 | Roto-Rooter Plumbing & Water Cleanup | 55 | 5.0★ (510) | Union City, 20 mi away | 24/7 | — |
| 9 | VanGo Rooter | 55 | 4.8★ (112) | South San Francisco | Sat · Sun | — |
| 10 | AIMS Companies | 54 | 2.8★ (4) | San Leandro, 13 mi away | 24/7 | — |
The 72 best excavating contractors in South San Francisco, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Oakland, 13 mi away
58/100CR ScoreRanked #2 because of its Google rating and review volume: 4.8★ from 2,560 Google reviews, the most in South San Francisco.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in San Mateo, 9 mi away
58/100CR ScoreRanked #3 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.
Based in Hayward, 19 mi away
58/100CR ScoreRanked #4 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 San Bruno, 3 mi away
56/100CR ScoreRanked #5 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 Alameda, 12 mi away
55/100CR ScoreRanked #6 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 East Palo Alto, 20 mi away
55/100CR ScoreRanked #7 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 Union City, 20 mi away
55/100CR ScoreRanked #8 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.
#9 VanGo Rooter
Based in South San Francisco
55/100CR ScoreRanked #9 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.
#10 AIMS Companies
Based in San Leandro, 13 mi away
54/100CR ScoreRanked #10 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 Hayward, 16 mi away
54/100CR ScoreRanked #11 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 Richmond, 18 mi away
54/100CR ScoreRanked #12 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 South San Francisco
53/100CR ScoreRanked #13 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 San Francisco, 5 mi away
53/100CR ScoreRanked #14 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, 5 mi away
52/100CR ScoreRanked #15 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.
Based in San Carlos, 14 mi away
52/100CR ScoreRanked #16 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 Mateo, 7 mi away
51/100CR ScoreRanked #17 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 Hayward, 15 mi away
51/100CR ScoreRanked #18 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 Brushy Creek, 3 mi away
50/100CR ScoreRanked #19 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.
Based in South San Francisco
50/100CR ScoreRanked #20 because of its Google rating and trade focus: 2.6★ from 5 Google reviews, listed on Google as “Paving contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Redwood City, 14 mi away
49/100CR 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 Berkeley, 12 mi away
49/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Demolition contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Albany, 17 mi away
49/100CR ScoreRanked #23 because of its Google rating and review volume: 4.9★ from 94 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
#24 wl demo corp
Based in Oakland, 22 mi away
49/100CR ScoreRanked #24 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.
Based in Barnstable, 12 mi away
49/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 14 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 72 ranked excavating contractors here; the rest are on their profiles.
Also serving South San Francisco
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.
How we ranked South San Francisco excavating contractors
We scored 72 South San Francisco 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 South San Francisco 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 South San Francisco: frequently asked questions
Who is the best excavating contractor in South San Francisco?
By CR Score, the highest-ranked excavating contractor in South San Francisco, CA is Harris Excavation with a CR Score of 59/100. It has 5.0★ from 25 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 72 excavating contractors on ten factors, last updated November 3, 2026.
How many excavating contractors are there in South San Francisco?
ContractorsRanked ranks 72 excavating contractors serving South San Francisco, CA. 4 of them are based in South San Francisco; 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 South San Francisco are open 24/7?
8 ranked excavating contractors in South San Francisco 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 (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which excavating contractors in South San Francisco work on weekends?
47 of 72 ranked excavating contractors post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are Harris Excavation (#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 South San Francisco excavating contractors have?
The median Google rating among 72 rated excavating contractors in South San Francisco is 5.0★, with a median of 9 reviews. Roto-Rooter Plumbing & Water Cleanup has the most, 2,560 reviews, and ranks #2. 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 South San Francisco count in this ranking?
Yes, if they are within 25 mi of the South San Francisco 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 South San Francisco
- November 2026: CR Scores recalculated for 72 excavating contractors serving South San Francisco.
- November 2026: 2 duplicate listings merged.
More excavating contractors and South San Francisco pages
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