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Top-Rated Excavation pros in Preston - Updated Nov 2026

Triton Excavation INC
4.6(
41
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Preston, WA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Bob & Larry did a great job going beyond what I needed. I am very happy with their work. Nothing was left behind. They may be a smaller company but cannot be beat for customer service, price and quality of work. I plan to use them again in the Spring when I will be removing a deck."
Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Seattle Rockeries
Seattle Rockeries
4.8(
62
)
Excavation - Major Grading or Resloping

Serving Preston, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Scope of project was removal of existing concrete pavers and hemlock stump, then installing 7-9 rockery flat steps made of natural basalt rockery rocks. We were thoroughly happy with the work from Seattle Rockeries. Harry and his crew were very knowledgeable, fast and friendly. Sharing pics of before and after."
206-960-9003
Glory
after
after
after

+138

Response time10 hrs
3 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Lazy B Enterprises
Lazy B Enterprises
New to Angi
Water or Fuel Tank - Remove

Serving Preston, WA and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

Lazy B Enterprises offers professional forestry mulching, land clearing, excavation, brush removal, site preparation, and property improvement services. We help residential, commercial, and rural property owners transform overgrown land into usable space. From clearing brush and reclaiming pasture to preparing building sites and tackling tough terrain, we bring dependable service, quality workmanship, and a hard-working attitude to every job. Locally owned and operated, we believe in getting the job done right. Lazy B Enterprises — Anything But Lazy.

Avatar for Pnw DigRight excavation llc
Pnw DigRight excavation llc
5.0(
15
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+1 more

Serving Preston, WA and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"Ben did some excavation work for me and I couldn’t be happier with how it turned out. He showed up when he said he would, worked hard, and made sure everything was done right. The job site was left clean and the work was solid. You can tell he takes pride in what he does. I’d definitely recommend going with pnw digright to anyone needing excavation work done."
Kirkland site prep
Kirkland site prep
Kirkland site prep
Kirkland site prep
Kirkland site prep

+8

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FAQs for excavation projects in Preston, WA

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 Preston, WA homeowners’ guide to excavation services

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