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Verified Reviews for Excavation pros in Portola, CA

*The Angi rating for Excavation companies in Portola, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

*The HomeAdvisor rating for Excavation companies in Portola, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

Last update on February 09, 2026

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Avatar for Freedom Forest Management
Freedom Forest Management
5.0(
5
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Portola, CA and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"I had about 5 acres to get cleared out from over growth, I called Freedom Forest Management and a gentleman named Levi was out at my property two day later to give me a quote, the quote they gave me was a little pricey compared to others but they were able to get to it in a couple of days compared to others that were 3-4 weeks out. They did a bang up job cleaned the area up really good even trimmed up a tree I had since he said needed it to help with growth. I definitely got the quality of work I paid for and then some."
Hazard tree removal
Hazard tree removal
Hazard tree removal
Hazard tree removal
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Recommended by100%of homeowners
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Diablo excavation & construction inc
New to Angi
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingLandscape - Minor Grading or Resloping

Serving Portola, CA and surrounding areas

In business since 2018

Free estimates

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

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Olivares Excavation
New to Angi
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Portola, CA and surrounding areas

In business since 2005

Free estimates

Credit card accepted

Olivares Excavation is a reliable, California-based excavation company specializing in residential and commercial site preparation. Serving communities across the Golden State, we offer expert services including land clearing, trenching, grading, foundation digging, and utility installation. With a focus on safety, efficiency, and quality workmanship, our team uses modern equipment to ensure every project is completed to the highest standard. Whether it's preparing a lot for new construction or handling complex excavation needs, Olivares Excavation is committed to delivering dependable results across California.

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Bobcat Services
New to Angi
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Portola, CA and surrounding areas

We are dedicated to providing our clients with the very best in installation and repair for your concrete and masonry needs. With over seven years of industry experience, we specialize in a variety of residential and commercial brick, stone and concrete work. We take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. \n

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Excavating questions, answered by experts

Whether you grind or dig up and remove your tree stump depends on your landscaping goals. Using a stump grinder leaves the root system in place for it to decompose over time, whereas digging up the tree stump removes the roots and the stump. Overall, stump grinding is a far simpler process since you won’t need to deal with the roots. Stump removal will make your yard look like a demolition site, but you’ll have an easier time replanting in the same place as your former tree.

A crawl space can be as little as 42 inches below the grade of your house, but this is not always recommended in flood-prone areas. At a minimum, there must be at least 16 inches of clearance between the ground and the floor joists to access the space in an emergency.

Septic drain lines (or leach lines) are typically buried between 18 and 36 inches underground, and should be at least 6 inches below the surface. These pipes are perforated and surrounded by filtering materials like sand or gravel. Burying the lines at this depth helps minimize odors and allows bacteria and other biological processes in the soil to effectively treat the wastewater. Burying lines too close to the surface can cause issues unless the soil is very compact and stable.

Yes, an excavation company is the best option for land grading and yard leveling. General landscapers might be able to tackle these projects, but an excavation company will do a better job because they’re used to operating the necessary heavy machinery. Landscapers might opt to do the work manually, which takes much longer and could cost you more in labor fees. Finally, excavation companies will understand local regulations and know when you need permits to legalize the work, while a landscaper might not.

How deep your septic system needs to be into the ground depends on several factors. In extremely cold environments, the tank needs to rest below the maximum frost line, which can be up to six or eight feet deep. The standard burying depth for most systems is between a few inches and four feet below ground level. Depth can also depend on the slope of the landscaping and other property variables. 

The Portola, CA homeowners’ guide to excavation services

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