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Work We've Delivered

Explore the commercial excavation and sitework Mighty Arm has delivered for GCs and developers across the Greater Seattle metro. Look through it and you'll see the same thing on every job: dirt moved, grades set, site ready.

ON SITE

The Work, Site by Site

Commercial excavation and sitework from across the Greater Seattle metro, taken from raw ground to finished site under one scope. Sort by service to find the work that matches your job.

Excavation
Demolition
An excavator digging a trench for utility installation in SeattleOpen trenches with newly installed sewer pipes for a commercial property yet to be built Contractors performing excavation for sewer line installation for a residential property in SeattleA newly installed storm pipe covered with backfilling Mini excavator loading spoil into a haul truck during site cleanup on a Seattle-area clearing jobAn excavation crew working for a site manhole in SeattleContractors preparing trench for adding backfill in a job site A finished sewer installation by an excavation contractor in SeattleAn excavator dumping soil for site preparation in Seattle A contractor operating an excavator for sewer installation in SeattleAn open trench dug by an excavator for wet utility installation processContractors working in a forest for an earthwork bid in SeattleSewer pipes installed for underground drainage system of a commercial property Contractors helping each other install pipes for a home's sewer lineExcavator digging and grading a site near a residential development in Seattle Aerial view of a rural residential building pad with a poured concrete foundation, silt fencing, and a crew working alongside excavators and a skid steer.CAT dozer spreading and grading fill dirt across a residential building pad, with a crushed gravel stockpile and staged drainage pipe in the foreground.Aerial view of a completed residential concrete foundation with poured stem walls and compacted gravel fill, with a dozer and two excavators finishing site grading.Wide view of a graded residential site showing finished concrete foundation walls, a dozer shaping the building pad, and excavators working near the treeline.
Upgrading Sewer Infrastructure in Maple Valley, WA Main

Upgrading Sewer Infrastructure in Maple Valley, WA

New sewer manholes and pipe were installed in Maple Valley while keeping existing service running throughout, wrapping up in about a week and a half.

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Site Infrastructure for a Tiny House Village in Seattle, WA

Site Infrastructure for a Tiny House Village in Seattle, WA

Vacant Seattle land was transformed with new utility infrastructure for a 37-unit tiny house village. The two-month buildout came in at a $100,000 budget.

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Freshly poured concrete slab foundations with plumbing rough-in on a residential job site

Site Development & Utilities for 22 Homes in Seattle

A 22-home site development in Seattle taken from raw ground to buildable pads. Clearing, over-excavation, structural fill, and full utilities.

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Side Sewer Installation and Problem Solving on Mercer Island, WA Main

Side Sewer Installation and Problem Solving on Mercer Island, WA

A new side sewer connection on Mercer Island required extra care after an existing asbestos pipe turned up mid-project. The work wrapped in five days.

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Relocating Drainage Infrastructure in Kirkland, WA Main

Relocating Drainage Infrastructure in Kirkland, WA

A Kirkland storm drainage system was relocated within 18 inches of a live gas line and protected trees in a constrained roundabout, wrapping up in about a week.

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Preparing a Slope for New Construction in Des Moines, WA Main Image

Preparing a Slope for New Construction in Des Moines, WA

A sloped Des Moines property was excavated and stabilized to prepare the site for a new house addition. The full project wrapped in about a week and a half.

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Precision Excavation for Earthquake Research in Olympic National Forest After Main Img

Precision Excavation for Earthquake Research in Olympic National Forest

Our team safely excavated deep research trenches for a USGS earthquake fault study in Olympic National Forest, then fully restored the site afterward.

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Crawl Space Excavation & Site Development in Monroe, WA Main

Crawl Space Excavation & Site Development in Monroe, WA

Four acres of rural Monroe land prepped for a custom home. Crawl space excavation, driveway grading, drainage, and full utilities on natural terrain.

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A demolished wooden garage in an abandoned property in SeattleContactors instructing excavator operator in demolishing an old shedDemolition site getting cleared for backfilling in SeattleA wooden home fully demolished by an excavator in SeattleA contractor standing near an excavated trench in a job site in SeattleA cleared lot being prepared for commercial building construction in SeattleAn excavator beside a home to be demolished in SeattleContractors working at a demolition site before performing backfilling in SeattleA wooden home demolished for site preparation in SeattleA wooden house being demolished by an excavator beside a commercial property in SeattleExcavator beside a debris pile on a cleared house demolition site in SeattleLarge conifer cut down to a bare trunk with limbs and branches piled across a fenced backyard lotCrew and excavator tearing down a small house down to the framing and chimney on a fenced lotOperator maneuvering a compact excavator into a fenced backyard to begin structure demolitionCompact excavator staged beside a fresh tree stump and sawdust with an old shed awaiting demolition
Site Prep and Demolition in Des Moines, WA Main Image

Site Prep and Demolition in Des Moines, WA

An old shed was demolished and the site excavated for a new foundation in one continuous scope, wrapping in two weeks in Des Moines, WA.

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Full Site Prep for a New Development in Seattle, WA Main

Full Site Prep for a New Development in Seattle, WA

An existing Seattle house was demolished to prepare the site for two new four-story condo buildings. The excavation and sitework ran between $100k and $150k.

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Full Site Demolition and Cleanup in Redmond, WA Main

Full Site Demolition and Cleanup in Redmond, WA

A Redmond property was demolished and cleared, including septic decommissioning, in just three days.

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Have a project coming up for bid? Send us the details and we'll get back to you with a plan.

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(206) 657 -7738
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Email Address

bids@mightyarmexcavation.com
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Location

3255 115th Ave NE #355, Bellevue, WA 98004, United States

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