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Top-Rated Excavation pros in Mercer Island - Updated Nov 2026

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

"The whole crew was wonderful to work with, professional and meticulous, cheerful and helpful, site left in great shape at the end of the demolition of three buildings and the challenging foundation hole excavation. Job finished on time, good value. Highly recommended!"
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 Mercer Island, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

Seattle Rockeries & Construction is a locally owned and operated full service contracting company serving Mercer Island, Seattle, Bellevue and surrounding areas. \nWe do one project at a time and ensure quality work and communicate effectively. We specialize in all aspects of landscaping and hardscaping from pavers, patios, block retaining walls, rock walls, paver driveways and much more! . No project is too big or small for us, so call today and let us put our experience to work for you! We are licensed, bonded and insured. We offer Electrical services as well, we have highly trained and certified electricians

206-960-9003
Glory
after
after
after

+138

Response time10 hrs
2 neighbors recently requested a quote
Recommended by94%of homeowners
Fuel Tank Installation Company, Inc.
4.9(
22
)
Water or Fuel Tank - Remove

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1973

Free estimates

Small jobs welcome

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade with over 50 years in business and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Large Tank Removal
Oil Tank Decommission
Oil Tank Decommission
Oil Tank Decommission
Response time1 day
Response rate87%
4 neighbors recently requested a quote
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

"Fast and easy. Gary was extremely responsive and timely. They responded first, got us scheduled asap, and finished the work in a blink. They were thorough and efficient and did an excellent job. I highly recommend their services for anyone needing demolition or excavation."
Wall project
Wall project
Retaining Wall
Parking lot
Parking lot

+52

Response time1 day
Response rate88%
4 neighbors recently requested a quote
Avatar for Vestige Environmental
Vestige Environmental
4.8(
24
)
Water or Fuel Tank - Remove

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1991

Free estimates

Credit card accepted

At Vestige Environmental, we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Soil treatment and export
Mass soil treatment PCS
Plant Volvo 450 Excavator for soil treatment.
Residential UST removal
UST removal

+107

Response time2 days
14 neighbors recently requested a quote
Recommended by95%of homeowners
Envirotank, LLC
4.5(
30
)
Water or Fuel Tank - Remove

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Getting started in Anacortes
Getting it all cleaned-up for a home sale.
Making it happen.
Not too deep and it is all cleaned up
Backfill time with a sonotube for the deck brace.

+17

Response time1 day
17 neighbors recently requested a quote
Recommended by100%of homeowners
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 LLC was born as a result of all my experience and trajectory over 10 years building tailored outdoor spaces. My journey began with a passion for craftsmanship, laying the foundation for my career in creating stunning outdoor environments. As my expertise grew, so did my portfolio of projects. From quaint backyard patios to expansive outdoor retreats.

Walkway + Steps
Koi Pond
Outdoor Kitchen
Brick pavers Walkway
Koi Pond

+74

Response time4 hrs
Response rate100%
4 neighbors recently requested a quote
Avatar for Northern Horizons Land and Yard Restoration
Northern Horizons Land and Yard Restoration
4.5(
6
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+1 more

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

Northern Horizons land and yard restoration serves its customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today \n \n

Before
Before
After
After
Response time5 hrs
Response rate100%
Recommended by66%of homeowners
Avatar for Diane's Tank Removal Services, LLC
Diane's Tank Removal Services, LLC
4.9(
4
)
Water or Fuel Tank - Remove

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1998

Offers commercial services

Customers say: Quality work

Our mission at Diane's Tank Removal Services, LLC, is to perform for our customers the highest level of quality services at fair and competitive market prices, and to ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas; including timelines, attention to detail, and service-minded attitudes. Give us a call today!

UST Removal
Steven
UST Removal
UST Removal
UST Removal

+8

Response time1 day
Recommended by100%of homeowners
D Hill Construction, LLC
4.1(
5
)
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 2017

Free estimates

Credit card accepted

Customer satisfaction is what determines our success, which is why we take a hands-on approach. When interacting with Porter Global Construction, LLC, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your project needs. Contact us today for a fair and accurate estimate of your project. We look forward to adding you to our long and growing list of happy customers.

Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
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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.