Cornerstone Excavation LLC
Excavation Company in Seattle, WA4.9 Google rating, 16 reviews0 reviews in the last 12 monthsMost recent review 2025-01-31Claimed on Google
Services
- Excavation
- Land clearing
- Demolition
- Grading
- Driveways
- Hauling
- Concrete removal
What reviews mention
- gravel dumps 3
- job quality 3
- quote 3
- company 3
- expert work 2
- reasonable pricing 2
- promptness 2
- skill 2
- driveway 2
Recent reviews
Great work, awesome pricing. Really works hard to get your project done exactly the way you need it. Solid work everytime.
Cornerstone Excavation installed 6 water meters for our HOA with one day for prep and one day to install. The work was efficiently and expertly done and the restoration of the dig sites was done extremely well. Taylor Bay Beach Club
Wonderful people to work with. Prompt and quick from quote to completion. Foundation cut for addition into a hill a lot of dirt needed to be worked. Highly recommend. Also has spread gravel for my driveway along with gravel dumps for other projects. Awesome helpful timely ect.
Cornerstone was very professional and skilled on our project. Couldn't ask for more. Highly recommend for your excavation and sewer repair needs.
Cornerstone has become my Go-To company for all of my material needs! As a contractor myself, Cornerstone always has the most competitive pricing as well and the most qualified experts delivering material. Making my work easy! I have needed assistance multiple times, including on...
Hours
| Mon | 7 am to 7 pm |
|---|---|
| Tue | 7 am to 7 pm |
| Wed | 7 am to 7 pm |
| Thu | 7 am to 7 pm |
| Fri | 7 am to 7 pm |
| Sat | 7 am to 7 pm |
| Sun | Closed |
Contact Cornerstone Excavation LLC
- (360) 271-0362
- Service-area business; no public storefront.
- View on Google Maps
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Data: Google Business Profile data via DataForSEO, pulled October 2026. Profile checked 2026-10-16.
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