59/100CR 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 Foster City, CA (2026)
68 excavating contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Foster City: Roto-Rooter Plumbing & Water Cleanup, CR Score 59/100; 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 68.
- 4
Most-reviewed: Roto-Rooter Plumbing & Water Cleanup, 2,560 Google reviews at 4.8★, the most of 68 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
68 Foster City excavating contractors are ranked here by CR Score, from ten published factors. 14 are open 24/7, 46 open Saturdays and 33 open Sundays, based on posted hours. The median Google rating is 5.0★ across 68 rated businesses.
Top 10 excavating contractors in Foster City at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Roto-Rooter Plumbing & Water Cleanup | 59 | 4.8★ (947) | San Mateo, 2 mi away | 24/7 | Overall |
| 2 | Diaz Hauling, Inc. | 59 | 5.0★ (144) | Hayward, 13 mi away | Sat · Sun · Evenings | — |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 58 | 4.8★ (1,239) | East Palo Alto, 10 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 | Roto-Rooter Plumbing & Water Cleanup | 57 | 5.0★ (510) | Union City, 13 mi away | 24/7 | — |
| 6 | Harris Excavation | 56 | 5.0★ (25) | South San Francisco, 11 mi away | Sat · Sun · Evenings | — |
| 7 | Roto-Rooter Plumbing & Water Cleanup | 55 | 4.8★ (229) | Hayward, 10 mi away | 24/7 | — |
| 8 | Roto-Rooter Plumbing & Water Cleanup | 55 | 4.8★ (781) | Sunnyvale, 19 mi away | 24/7 | — |
| 9 | Roto-Rooter Plumbing & Water Cleanup | 55 | 4.8★ (1,039) | Santa Clara, 21 mi away | 24/7 | — |
| 10 | Dmp construction / Demoliton | 55 | 5.0★ (5) | San Bruno, 8 mi away | Sat · Sun · Evenings | — |
The 68 best excavating contractors in Foster City, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Hayward, 13 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, 10 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 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 Foster City.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Union City, 13 mi away
57/100CR ScoreRanked #5 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 South San Francisco, 11 mi away
56/100CR ScoreRanked #6 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 Hayward, 10 mi away
55/100CR 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 Sunnyvale, 19 mi away
55/100CR ScoreRanked #8 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, 21 mi away
55/100CR ScoreRanked #9 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 San Bruno, 8 mi away
55/100CR ScoreRanked #10 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 Carlos, 4 mi away
55/100CR ScoreRanked #11 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 Alameda, 16 mi away
54/100CR ScoreRanked #12 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.
#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 Fremont, 18 mi away
53/100CR ScoreRanked #14 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, 22 mi away
53/100CR ScoreRanked #15 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 Hayward, 9 mi away
52/100CR ScoreRanked #16 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.
#17 VanGo Rooter
Based in South San Francisco, 10 mi away
52/100CR ScoreRanked #17 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, 4 mi away
52/100CR ScoreRanked #18 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 Redwood City, 5 mi away
52/100CR ScoreRanked #19 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.
#20 wl demo corp
Based in Oakland, 14 mi away
51/100CR ScoreRanked #20 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 San Jose, 22 mi away
51/100CR ScoreRanked #21 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 South San Francisco, 9 mi away
51/100CR ScoreRanked #22 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 Newark, 15 mi away
51/100CR ScoreRanked #23 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 Milpitas, 24 mi away
51/100CR ScoreRanked #24 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 San Francisco, 14 mi away
50/100CR ScoreRanked #25 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.
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 68 ranked excavating contractors here; the rest are on their profiles.
Also serving Foster 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 |
|---|---|---|
| Badger Infrastructure Solutions - San Jose, CA | 3.0★ (2) | 24 mi |
| Bay Area Hydrovac | 1.0★ (2) | 11 mi |
| BREAKGROUND EXCAVATING | 5.0★ (2) | 14 mi |
| Century Build Group, Inc | 5.0★ (1) | In Foster City |
| Demolition And Excavation Heroes | 5.0★ (2) | 15 mi |
| Double O Engineering, Inc. | 5.0★ (1) | In Foster City |
| Excel Site Services | 5.0★ (2) | 10 mi |
| Extra Mile Excavating | 3.0★ (2) | 14 mi |
| Fanfa Inc | 5.0★ (2) | 10 mi |
| G-Core Engineering | 5.0★ (2) | 13 mi |
| Gator Landscaping and Construction | In Foster City | |
| Granite Excavation & Demolition | 4.5★ (2) | 10 mi |
| Luciano Concrete Construction | 5.0★ (2) | 5 mi |
| Production Excavating | 5.0★ (2) | 24 mi |
| Right on Construction Inc. | 4.0★ (1) | 6 mi |
| Rooflex | 5.0★ (25) | In Foster City |
| Rousseau Construction | In Foster City | |
| S A S Bobcat Service | 5.0★ (1) | 3 mi |
| V&B Grading Inc. | 5.0★ (2) | 18 mi |
| Water Rock Construction | 3.0★ (2) | 16 mi |
How we ranked Foster City excavating contractors
We scored 68 Foster 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 Foster 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 Foster City: frequently asked questions
Who is the best excavating contractor in Foster City?
By CR Score, the highest-ranked excavating contractor in Foster City, CA is Roto-Rooter Plumbing & Water Cleanup with a CR Score of 59/100. 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 68 excavating contractors on ten factors, last updated November 3, 2026.
How many excavating contractors are there in Foster City?
ContractorsRanked ranks 68 excavating contractors serving Foster City, CA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which excavating contractors in Foster City are open 24/7?
14 ranked excavating contractors in Foster City 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 Foster City work on weekends?
46 of 68 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 Foster City excavating contractors have?
The median Google rating among 68 rated excavating contractors in Foster City 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 Foster City count in this ranking?
Yes, if they are within 25 mi of the Foster 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 Foster City
- November 2026: CR Scores recalculated for 68 excavating contractors serving Foster City.
- November 2026: 2 duplicate listings merged.
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