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  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon11
    Verified excavation services reviews

Find Excavation pros in Saint Helena

Avatar for Castaneda Grading & Excavating
Castaneda Grading & Excavating
5.0(
23
)
Excavation - Major Grading or ReslopingLandscape - Minor Grading or ReslopingBuilding Site - Preparation and Clearing+2 more

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Humberto is a very creative problem solver! Personable and definitely interested in customer satisfaction, so spends time understanding the full scope of the problem. The problem was the subterranean north wall of the sanctuary of First Presbyterian Church in Vallejo that was far from being waterproof, especially with the rains last winter. Castaneda dug out the soil next to the wall, pressure washed it and applied two coats of DryLok and then a layer of Henryâ s waterproofing. Then Humberto installed a French drain and then a big pipe to route the water off of five downspouts. To get the correct drainage slope, more excavating needed to be done than anticipated. Removed five landscaped trees and lots of concrete that was in the way of the drains which were to be routed under city sidewalks."
Garden
Graded
Finished driveway
Final slope grade
Finish grade 4 inches below sidewalk

+77

Response time1 day
Response rate96%
21 neighbors recently requested a quote
JOHN MOUNTAIN
5.0(
7
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"I cannot say enough about how good this experience with John Mountain/Mountain Engineering has been. They said it would be 3 weeks; anti was. The work was painstakingly done, including a French drain behind the wall. And they replaced the plants that were destroyed during the process, which was an unexpected bonus."
Response time10 hrs
11 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for De Haro Landscaping
De Haro Landscaping
4.7(
12
)
Landscape - Minor Grading or Resloping

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Rafael did an excellent job repairing my fence. I will highly recommend him for any project based on how he completed this one so thoroughly. Thank you again for a job well done. It was a pleasure meeting you."
Front yard Landscape
Front yard Landscape
Front yard Landscape
Front yard Landscape
Front yard Landscape

+17

Response time2 days
3 neighbors recently requested a quote
Recommended by90%of homeowners
Juan Contreras Landscaping
5.0(
6
)
Landscape - Minor Grading or Resloping

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quick response

"I hired Juan to redo my front yard. He removed the old lawn, updated the irrigation, and designed the new landscape. He did an amazing job and I am extremely happy with the finished project. He was on time and always communicated any changes. Juan and his team where friendly and professional throughout the entire project."
Response time3 hrs
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for E G Paving Construction, Inc.
E G Paving Construction, Inc.
5.0(
2
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Edgar and his employees were amazing. Their bid was the best. Other guys said they would have to rip up pavement that this crew could do no problem minimally. The guys were so well groomed and polite. Not that that matters but it was an extra bonus. Lovely crew and incredible job in a few days. I will for sure use them again."
Driveways
Building pads
Concrete patio
Preparation
Asphalt pave

+4

Response time2 days
21 neighbors recently requested a quote
Recommended by50%of homeowners
Demar, Inc.
5.0(
1
)
Excavation - Major Grading or ReslopingLandscape - Minor Grading or ReslopingBuilding Site - Preparation and Clearing+2 more

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2000

Free estimates

Offers commercial services

Demar Inc. proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things, that set us apart from the rest. We are locally owned and operated. Give us a call today!

3 neighbors recently requested a quote
Recommended by100%of homeowners
JG LANDSCAPE CONSTRUCTION
5.0(
1
)
Landscape - Minor Grading or Resloping

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2025

Free estimates

"Julian and crew are fantastic and are perfectionists. They do the job right and more which is rare. I had them install a colored cement pad and a 12 x 14 gazebo on the pad. .All was done to perfection. Normally I am nervous when I have contract work done however this company made me so relaxed. They delivered better than high quality work as well as total communication. I am so happy to have found this company and will use them for future projects."
Response time1 day
3 neighbors recently requested a quote
Raya Engineering
New to Angi
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Saint Helena, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

Here at Raya Engineering, we sustain our company on the principal that our customers come first. We offer services that are tailored to your needs and we're ready to show you what our experience can bring to your project! Call us today!

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Excavating questions, answered by experts

It takes one hour to dig a 10-foot trench by hand. Use a trenching shovel with a sharp tip and a long head. Plan for more time if your soil is heavy or rocky. Consider renting a trencher if you’re digging a long or deep trench or if you have challenging soil or terrain. 

Yes, trenchers can go through gravel. Gravel is made up of smaller, softer rocks that certain trenchers are able to cut through. Just be sure to use a rock wheel trencher or chain trencher, both of which are made to cut through rocky landscapes and gravel pathways without dulling the teeth or chain.

Yes. A metal detector is one of the quickest and easiest ways to find your septic tank. However, metal detectors can be too expensive (costing upward of $300 in some cases), and not everyone has a metal detector just lying around. If that’s the case for you, you can also take a long metal rod and poke it into the ground at regular intervals until you hit something—likely your septic tank lid.

Underground downspouts refer to the sections of downspout extensions that lead away from your home and gutter system. While they cost more than traditional extensions, they can provide several benefits, such as less frequent damage and no need to move them for lawn care tasks. Whether they're worth it or not depends on your budget at installation time and how much convenience they'll add to your situation.

Trenching is a specific kind of digging. Trenching means digging a depression in the earth that’s deeper than it is wide, often with heavy machinery. Digging refers to any kind of removal of earth in order to create a human-made depression, hole, or cut in the earth’s surface. You can dig with big tools or even with just a hand shovel.

The Saint Helena, CA homeowners’ guide to excavation services

From average costs to expert advice, get all the answers you need to get your job done.