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TRUSTED BY MILL CITY, OR HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon16
    Verified excavation services reviews

Verified Reviews for Excavation pros in Mill City, OR

*The Angi rating for Excavation companies in Mill City, OR 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 Mill City, OR 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 December 16, 2025

Find Excavation pros in Mill City

Avatar for Eric's Quality Building, Inc.
Eric's Quality Building, Inc.
4.9(
43
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+1 more

Serving Mill City, OR and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"Had a retaining wall done? Eric was great in keeping me informed of all steps up to the very end and was easy to work with. His team did an outstanding job and the wall looks great. It is nice to have a company that shows pride in its work and cares about the customer. I highly recommend them."
grape arbor done with rough cut material
New Deck
Stair and Fence
Portland ADU (framing siding roofing)
grape arbor done with rough cut material

+122

4 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Mid Valley Excavation, LLC
Mid Valley Excavation, LLC
4.9(
8
)
Building Site - Preparation and ClearingLandscape - Minor Grading or ReslopingExcavation - Major Grading or Resloping

Serving Mill City, OR and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Working with Mid-Valley Excavation was an excellent experience. They took the time to come out and give a thorough bid inspection. They spent a good amount of time talking to us, listening to our wishes and needs and discussing project scope and requirements. They delivered a bid quickly and they were very responsive to follow-up questions and concerns. Their work is great, the end result was above and beyond my expectations. They were quick, efficient, and work with an attention to detail. It was a pleasure working with them. I would hire them again for future projects."
Response time2 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for CAVALLARO EARTHWORKS LLC
CAVALLARO EARTHWORKS LLC
5.0(
5
)
Excavation - Major Grading or ReslopingLandscape - Minor Grading or ReslopingBuilding Site - Preparation and Clearing+1 more

Serving Mill City, OR and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"High quality work, excellent communication, accurate thorough estimate. Would hire them again easily."
Driveway prep
Water and sewer install
Retaining wall build
Retaining wall build
ranch road

+12

Response time2 days
Response rate90%
7 neighbors recently requested a quote
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Avatar for Andrew Excavation & Septic, LLC
Andrew Excavation & Septic, LLC
5.0(
2
)
Building Site - Preparation and ClearingExcavation - Major Grading or Resloping

Serving Mill City, OR and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"I would give Andrew highest marks in every catagory; communication, holding to his schedule, level of expertise and quality of work."
Septic Repair
Septic Repair
ATT Septic System Install
ATT Septic System Install
ATT Septic System Install

+10

Response time1 day
Response rate100%
4 neighbors recently requested a quote
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Avatar for MG Landscape & Construction
MG Landscape & Construction
4.4(
5
)
Landscape - Minor Grading or Resloping

Serving Mill City, OR and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Quick response with a bid. Showed up when promised and were very professional and courteous. Driveway and patio pressure washed and sealed to look like new. We couldn’t be happier with result. Would definitely hire Roli and team again."
Response time8 hrs
Response rate95%
Recommended by60%of homeowners
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Avatar for GBL Construction LLC
GBL Construction LLC
5.0(
2
)
Excavation - Major Grading or ReslopingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping - For Business

Serving Mill City, OR and surrounding areas

Approved

In business since 2015

Free estimates

Offers commercial services

"Yes, did a great job, very satisfied"
Response time1 day
3 neighbors recently requested a quote
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Avatar for CenterLine Contracting
CenterLine Contracting
New to Angi
Building Site - Preparation and ClearingExcavation - Major Grading or Resloping

Serving Mill City, OR and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

Here at Centerline Contracting we specialize in Excavation, Dirt work, Tree removal, and land clearing services. We take pride in our work striving for customer satisfaction everytime.

Build prep/ land grade
Build prep/ land grade
Build prep/ land grade
Build prep/ land grade
Build prep/ land grade

+2

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Avatar for WICKWIRE CIVIL WORKS, LLC
WICKWIRE CIVIL WORKS, LLC
New to Angi
Building Site - Preparation and ClearingExcavation - Major Grading or Resloping

Serving Mill City, OR and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Wickwire Civil provides professional excavation and civil site services focused on precision, safety, and performance. We support residential and commercial development with reliable earthwork and site preparation solutions.

7 neighbors recently requested a quote
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Showing 1-10 of 46
Excavating questions, answered by experts

The digging depth will depend on the size of the trencher you use. Even smaller units can dig up to 4 feet deep, which is plenty for a DIY job. However, much larger trenchers can reach a depth of 18 feet and are better used by a team of pro contractors, not a single DIYer. As with all home improvement projects, use the right tool for the job and proceed with caution.

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.

Drilled wells have a pipe sticking up that’s covered in a plastic or metal casing. On the other hand, a dug well will look like a big hole in the ground and is more similar to what you’d see in a fantasy or Western movie. If you want to be sure, contact the city for documentation on your property’s construction and excavation history. 

There is no standard depth for burying a septic tank; they are typically buried anywhere from 4 inches to 4 feet underground. The final depth depends on several factors, including the depth of your main sewer line, the height of the bedrock, soil type, local regulations, and the property's landscape. If you plan to grow grass or plants over the tank, a depth of at least 4 to 6 inches is recommended. Deeper tanks can be more difficult to locate, but a septic professional can help find it for you.

Sewer lines can be buried anywhere from 18 inches to 8 feet deep, with a common average depth between 18 and 30 inches. The exact depth depends on local factors like climate and soil type. In colder regions, pipes must be buried deeper (below the frost line) to prevent freezing, sometimes as deep as 8 feet. The digging depth can also impact the cost of sewer line replacement. To find the specific depth for your property, you can check the building plans for your system, which should be on file with your city or local sanitation department since permits are required for installation.

The Mill City, OR 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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