Redmond · King County
Excavation Contractor in Redmond, WA
Foundation digs, footings, utility trenches and building pads in Redmond, dug to spec by an owner-operated crew with its own excavators and dump trucks. Serving Downtown Redmond, Education Hill, Overlake and Grass Lawn and the rest of Redmond.
What the ground is like for excavation in Redmond
The flat Sammamish valley through downtown and Marymoor Park, with hills rising east to Education Hill and west to Overlake. That shapes every excavation job here: where the machine can sit, how trucks get in and out, and where the spoil goes before it is hauled away.
Soft valley alluvium with high groundwater along the river, glacial till on the hills. On a Redmond foundation that decides how deep we go to reach bearing soil, whether unsuitable material has to be over-excavated and replaced with compacted structural fill, and how we keep water out of the hole while forms go in.
The Sammamish River, Bear Creek and Evans Creek are salmon streams with wide buffers. The valley floor has floodplain and wetland areas. If your footprint, trench or driveway lands near any of that, the excavation plan has to respect the buffer, and erosion control goes in before the first bucket.
Common excavation projects in Redmond
New home and ADU foundations
Footprints for new houses, ADUs and garages on infill and teardown lots around Downtown Redmond and Education Hill, dug to the elevations on your plans and ready for forms.
Over-excavation and structural fill
Where Redmond ground is soft, we dig out the unsuitable material and place compacted structural fill in lifts so the footing bears on something solid.
Utility and water line trenches
Trenches for water, power, sewer and gas service from the street to the house or shop, backfilled and compacted, anywhere from Overlake to the edge of Redmond.
Tight-access digs
Compact excavators for narrow side yards and alley-access lots in Redmond, with mats down to protect the driveway and the neighbors' property.
What our excavation work in Redmond covers
- Foundation Excavation
- Utility Trenching
- Construction Access Roads
- Building & Equipment Pads
- Rough & Finish Grading
- Spoil Haul-Off
Permits & Rules
Excavation permits and utility locates in Redmond
Inside city limits, the City of Redmond handles building and grading permits. Properties outside city limits fall under the King County Department of Local Services. Foundation excavation is usually covered by the building permit, while grading or fill over set volumes, or any work in a critical area, can need its own approval.
Before any digging, Washington law requires a utility locate through 811 at least two business days ahead. We place that call on every job, and we pothole near marked lines instead of trusting paint alone.
Cost & Timing
What affects the cost of excavation in Redmond
We do not publish flat prices because no two Redmond sites are the same. These are the things that move the number most here.
Tight lots
Narrow side yards and alley access in Redmond mean compact equipment and shorter truck loads. We plan it so it costs less than it could.
Soft ground
Where Redmond soils are soft or wet, over-excavation, fabric and imported rock are often part of the job, and we price that in up front.
Buffers and permits
Work near Redmond's rivers, creeks, lakes or shoreline can need permits and limits on where machines go. That affects scope and schedule more than price.
Haul-off and disposal
How much material leaves the site, and what it is, drives cost. Our own trucks keep that predictable on Redmond jobs.
When to schedule excavation in Redmond
Excavation in Redmond goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
Redmond's till soils hold water through the winter, which is when drainage problems show up. That is a good time to see where water goes, and the dry season is the time to fix it.
On Redmond's floodplain ground, the river sets the calendar. Low-lying work is planned for the dry season, after high water has dropped.
Where We Work
Excavation across Redmond
Redmond runs from the Sammamish River valley and downtown up onto Education Hill, Grass Lawn and the Overlake tech campuses. It mixes established neighborhoods with a lot of new construction.
We dig foundations, ADU and garage footprints, septic and utility trenches, and building pads across Downtown Redmond, Education Hill, Overlake, Grass Lawn, Bear Creek, Avondale and Idylwood. Mid-century and 1970s to 90s homes on Education Hill and Grass Lawn, new townhomes and apartments downtown and in Overlake.
Our trucks run in and out on SR 520, SR 202, Avondale Rd and Redmond Way, so spoil haul-off and fill delivery happen on our schedule instead of a subcontractor's.
We also do excavation nearby in Kirkland, Sammamish, Bellevue and Woodinville. See everything we do in Redmond, read our full guide to excavation, or browse all service areas.
Why DirtRaptor
Why Redmond owners call us for excavation
Owner on the machine
On Redmond jobs you talk to the person who walks the site, writes the quote and runs the equipment.
Trees and dirt, one crew
If trees are in the way of your Redmond project, we take them down ourselves instead of waiting on a separate tree service.
Our own trucks
Haul-off and deliveries run on our schedule along SR 520 and SR 202, not a subcontractor's.
Permit-aware
We know Redmond has rules on trees and critical areas, and we flag what applies before any work.
How an excavation job runs
- 01
Site Walk & Utility Locates
- 02
Layout, Staking & Access
- 03
Excavation & Spoil Management
- 04
Backfill, Compaction & Inspection
Real Jobs
Recent DirtRaptor work near Redmond
Demolition · Edmonds, WA
Driveway Removal & Concrete Prep
Tearing out an old blacktop driveway and prepping the ground for a new concrete pour — broken material hauled off, base left clean and ready.
Demolition · Everett, WA
Condemned 100-Year-Old Shed Teardown
A 100-year-old shed, condemned and unsafe, brought down and hauled off — the site left graded flat and clean.
Questions
Excavation Contractor in Redmond: FAQs
What kind of soil will you hit digging in Redmond?
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Soft valley alluvium with high groundwater along the river, glacial till on the hills. We read the ground on the site walk and spell out in the quote how footing depth, over-excavation and imported fill are handled, so there is no surprise invoice.
Who issues excavation and grading permits in Redmond?
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Inside city limits it is the City of Redmond. Outside them it is the King County Department of Local Services. We confirm which applies to your parcel before quoting and flag anything that needs extra review, like a stream buffer or steep slope.
Can your trucks and excavator get onto my Redmond site?
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Almost always. We run compact and full-size tracked excavators and size the machine to the access. On tight lots we protect driveways and lawns with mats and stage trucks so the street stays open.
How much does excavation cost in Redmond?
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It depends on the site, so we quote after a free site walk rather than guessing on the phone. The biggest drivers in Redmond are usually tight lots, soft ground, buffers and permits. You get a written number with inclusions and exclusions spelled out.
When is the best time to schedule excavation in Redmond?
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Excavation in Redmond goes best in the drier months, when soil compacts properly and trenches stay open. Wet-season work is doable with erosion control and the right material, and we plan for it in the quote.
What counts as a landmark tree in Redmond?
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Redmond gives very large trees extra protection, and removing one usually needs city approval and replacement. We measure and identify the tree on the site walk and tell you what applies.
Can you fix drainage on my Education Hill property?
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Yes. Most Education Hill drainage problems come from water perching on glacial till. Regrading and properly placed drains carry it away from the house.
Do you pour the concrete too?
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We excavate, prep and compact to spec, and coordinate directly with your concrete contractor on grades and timing. Confirming who is pouring early avoids the most common scheduling gap on residential builds.
Ready for a real number in Redmond?
Send the address and a few photos. We walk the site for free and come back with a written quote.
