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Find Excavation pros in Mercer Island

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

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"They came to look at some work on a Saturday and just did it rite then. I wasn't expecting that so was thrilled. Did a great job on a totally miserable project, got it done quickly, cleaned up and cost was very fair. I'd recommend them in a heartbeat"
Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Seattle Rockeries
Seattle Rockeries
4.8(
62
)
Excavation - Major Grading or Resloping

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"These guys are amazing! We highly recommend them. In January 2021 we hired Seattle Rockery to construct a retaining wall to drain our yard and as a landscaping accent. I have waited until June to review them because I wanted to make sure that the problem of standing water in the the crawlspace that we noticed in June 2020 had been resolved. It worked better than we had hoped. Seattle Rockery built the wall as expected, they incorporated drainage to the curb to direct water off the property, and connected our downspouts the the drainage as well. When they were done with the original project we liked them so much that we asked for additional work that nearly doubled the project. After a little bit of negotiating with other vendors and clients the were able to stay for and complete the extra work. Seattle Rockery are easy to work with and do excellent work. We cannot recommend them highly enough and if we ever need a wall built again these are the guys that we're going to call."
206-960-9003
Glory
after
after
after

+138

Response time10 hrs
2 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Gaston Bros. Excavating, Inc.
Gaston Bros. Excavating, Inc.
4.4(
20
)
Excavation - Major Grading or ReslopingBuilding Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For Business+1 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1980

Free estimates

Offers commercial services

"I hired Gary Gaston to clear my severely overgrown backyard. He showed up when he said he would to look at the job and give me a bid. I decided to go with Gaston Brothers and we set up a day and time to start the project. Gary said he could do it in one day. Again he showed up on time and started the work. I was impressed at Gary's skill operating the backhoe. That is truly a lost art. He cleared enough to fill 2 full sized dump trucks. Gary went the extra mile by leveling out the yard. It's ready for me to rake it smooth and plant grass. Thank you Gary!"
Wall project
Wall project
Retaining Wall
Parking lot
Parking lot

+52

Response time1 day
Response rate88%
4 neighbors recently requested a quote
Avatar for NestEx LLC
NestEx LLC
5.0(
6
)
Excavation - Major Grading or ReslopingBuilding Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For Business+1 more

Serving Mercer Island, WA and surrounding areas

Approved

Free estimates

Small jobs welcome

Offers commercial services

"I highly recommend NestEx LLC. We needed a gravel pad prepared for 2 sheds on very short notice, and he truly saved the day. Despite the tight timeline, he went out of his way to accommodate us by coming out on a Saturday to get the job done. His professionalism and attention to detail were evident from the moment he started. He meticulously dug out the soil and leveled the entire area before taking his time to expertly layer layer and compact the gravel. You can tell he takes immense pride in his work; the base is rock-solid and perfectly even. What impressed me the most was his thoughtfulness. After finishing a thorough cleanup of the area, he was gracious enough enough to cover the entire pad to protect it from the incoming rain. He wanted to ensure the gravel wouldn’t be compromised so it could harden properly- a level of care you rarely see. If you want someone reliable, hardworking, and genuinely dedicated to quality, look no further. 5 stars all the way."
2 neighbors recently requested a quote
Avatar for ARCADIAN Designs LLC
ARCADIAN Designs LLC
5.0(
8
)
Excavation - Major Grading or Resloping

Serving Mercer Island, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"Arcadian designs installed a paver patio and low retaining wall in the side yard of our home. They were very communicative, helpful when answering my questions and professional. They went above and beyond to ensure the design of the patio was functional and beautiful. The work was completed on schedule and with great attention to detail, plus a 5 year warranty that other bidders didn’t offer. I would highly recommend Arcadian for hardscape work!"
Walkway + Steps
Koi Pond
Outdoor Kitchen
Brick pavers Walkway
Koi Pond

+74

Response time4 hrs
Response rate100%
5 neighbors recently requested a quote
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Showing 1-10 of 161

FAQs for excavation projects in Mercer Island, 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 Mercer Island, WA homeowners’ guide to excavation services

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