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Find Excavation pros in Mill Valley

Avatar for Castaneda Grading & Excavating
Castaneda Grading & Excavating
5.0(
23
)

Serving Mill Valley, 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 rate95%
27 neighbors recently requested a quote
Avatar for SH Grading & Excavating
SH Grading & Excavating
5.0(
15
)

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Jose installed a French drain and piping for the downspouts to drain into. Jose was very prompt and courteous. He kept me updated throughout the course of the project."
Grading
Grading
Grading
Grading
Dirt pile

+25

Response time7 hrs
Response rate100%
12 neighbors recently requested a quote
Avatar for Ray's Rescue Plumbing
Ray's Rescue Plumbing
4.8(
16
)

Serving Mill Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Emergency services offered

Warranties offered

"I would highly recommend Ray’s Rescue Plumbing. He was very clean, prompt, courteous and knowledgeable. We had several issues ranging from leaks, repairs and installing a tankless water heater. Ray’s prices were competitive and he actually saved us a few thousand dollars from a previous bid from a ‘not so honest’ plumber."
Install - hot water heater
Install - hot water heater
Install - hot water heater
Tankless Install
Happy to help

+2

Response time4 hrs
Response rate91%
71 neighbors recently requested a quote
Avatar for Sonoma Siteworks & Engineering
Sonoma Siteworks & Engineering
5.0(
4
)

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Went great. Good company to work with, awesome communication. They jump right on it and knock the work out quickly and cleanly. Very knowledgeable and professional."
Additional Photos
Clearing and Grading
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.4(
26
)

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"The bathroom remodeling was a remarkable transformation, turning our outdated space into a luxurious retreat. We're enamored with the sleek, modern design that enhances our daily routines with elegance and comfort."
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.
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.
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+1

Response time6 hrs
Recommended by25%of homeowners
Avatar for Ultra Construction Group Inc
Ultra Construction Group Inc
4.3(
4
)

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Gio and the entire Ultra Construction Group team are amazing. They showed up on time and were incredibly organized and their attention to detail made the project even better then I imagined. I would highly recommend this company for any concrete project big or small."
Response time2 days
54 neighbors recently requested a quote
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FAQs for excavation projects in Mill Valley, CA

Depth depends on the type of installation and the regulations in your area. Water supply lines typically require 24 inches, while drainage pipes are often installed 36 inches below grade. For most general projects, a depth of 12 to 24 inches and a width of about eight inches is sufficient. Sticking to these specs keeps your utilities safe, code-compliant, and easier to maintain later.

When you need to run utilities underground, you’ve got two main options: boring or trenching. Boring employs directional drilling to install utilities without exposing a continuous channel, while trenching requires excavating an open channel to place utilities securely. Directional drilling preserves landscape integrity, whereas trenching provides direct access for installation, albeit with greater surface disruption. This clear comparison helps you select the method best suited to your project.

Plan on 12 hours to dig 100 linear feet when the soil is cooperative and you can work continuously. This timeframe applies when work is performed consistently and methodically. Factors such as rocky soil, tree roots, obstructions, and frozen ground increase the overall duration, demanding extra planning and effort. Comprehensive operational planning ensures that every challenge is managed efficiently and the project is completed on schedule.

If you want your yard to look untouched, laying fresh sod over the trench is the quickest fix. New sod needs 30 to 45 days to root and blend with the rest of your lawn. A local sod pro can provide you with a firm timeline and tips to ensure the grass takes hold and maintains your curb appeal.

The Mill Valley, CA homeowners’ guide to excavation services

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