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Verified Reviews for Excavation pros in Lagunitas-Forest Knolls, CA

*The Angi rating for Excavation companies in Lagunitas-Forest Knolls, 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 Lagunitas-Forest Knolls, 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 June 10, 2026

Find Excavation pros in Lagunitas-Forest Knolls

Avatar for M P Excavating & Engineering
M P Excavating & Engineering
4.5(
15
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Miguel is responsive and professional. He has a confident grasp of excavation project options."
Large drainage project
Large drainage project
Large drainage project
Large drainage project
Large drainage project

+11

Response time1 day
Response rate97%
30 neighbors recently requested a quote
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Avatar for SH Grading & Excavating
SH Grading & Excavating
5.0(
16
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"I am incredibly pleased with this company. The entire crew were 100% professional. The owner of the company took time to answer my homeowner questions as they came up. He was very patient and thorough. All the men on the job worked incredibly hard and stayed on task throughout the project. They installed the French drain, installed a washout and removed an old deck all in a weekend. I would most certainly recommend them."
Grading
Grading
Grading
Grading
Dirt pile

+25

Response time7 hrs
Response rate100%
12 neighbors recently requested a quote
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Avatar for Sonoma Siteworks & Engineering
Sonoma Siteworks & Engineering
5.0(
4
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"work was well organized, well executed and completed ahead of schedule by a friendly and knowledgable crew."
Additional Photos
Clearing and Grading
7 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for E G Paving Construction, Inc.
E G Paving Construction, Inc.
5.0(
2
)

Serving Lagunitas-Forest Knolls, 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
20 neighbors recently requested a quote
Recommended by50%of homeowners
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Avatar for Ultra Construction Group Inc
Ultra Construction Group Inc
4.4(
5
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Giovani and Dell of Ultra Construction were great to work with and they responded quickly and efficiently to our contractor inquiry. They came out the next day and provided a fair and reasonable estimate. Dell and his crew, including Julian came out and had the concrete walkway and stairs installed in just one day. It looks great and we couldn’t be happier with the results. Their prep work and cleanup were outstanding. Would highly recommend this company for any concrete construction work"
Response time2 days
55 neighbors recently requested a quote
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Avatar for SH Grading & Excavating
SH Grading & Excavating
5.0(
12
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"answered my request for hauling away farm equipment promptly,arrived on time, friendly, professional, offered an estimate for drainage work."
We like to be level on our boxes
Here we set the boxes and level them
Boxes set and level started to back fill in small lifts
Electrical boxes
Box backfilled

+28

Response time6 hrs
Response rate98%
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Vargas Landscaping
4.7(
48
)

Serving Lagunitas-Forest Knolls, CA and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"He was available by phone, and was flexible in scheduling meetings which is great. He was professional, and seemed quite knowledgable. In the end, I didn't use Nato's services because his quote was twice as much as the other contractor I was considering. Perhaps his prices may be more competitive in other services he offers. Either way, working with this company was a pleasant experience."
Recommended by95%of homeowners
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Showing 1-10 of 41
Excavating questions, answered by experts

The rules for trenching and excavation include setting up and following safety protocols, learning how to use tools and machines properly, and ensuring there is a safe exit for all workers. Keep heavy equipment and materials away from the edge of the hole or trench. Call the 811 dig line before starting any excavation or trenching project to ensure you don’t hit any electrical or gas lines.

Excavation is priced in cubic yards, so you’ll need to find the volume of the area in order to calculate costs. Multiply the length, width, and proposed depth of your excavation site, then convert it into yards to get the volume. Multiply this figure by the price per cubic yard.

Most homeowners can measure by hand to get a rough estimate, even if it’s tedious. You may want to pull out a tape measure or use a string to help mark the area.

In the United States, a depth of 36 inches (three feet) for underground water lines is the accepted industry standard. This depth varies from location to location based on local conditions. In areas with colder winters, they may be buried deeper to prevent frozen well water pipes : This is usually at least six inches below the frost level. The International Plumbing Code calls for a minimum of 12 inches below grade.

The best method for digging a trench depends on the scope of the project. For a short, shallow trench (less than 2 feet deep) in light, soft soil, digging by hand may be sufficient. However, digging by hand is labor-intensive, so consider the effort required. A machine trencher is the better option for longer trenches (over 100 feet), deeper ones, or when dealing with difficult soil conditions, such as rocky or hard ground, or obstructions like tree roots. A machine can save significant time and energy in these situations.

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.

The Lagunitas-Forest Knolls, CA homeowners’ guide to excavation services

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

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