Concrete, Excavation
& Site Work
in South King County, WA
Driveways, patios, retaining walls, foundations, slabs, demo, and excavation from a local contractor built to licensed & insured standards.
Why Choose Us
Concrete Done Right,
From the Ground Up
Cascade Concrete Co. brings over 10 years of hands-on experience to every residential and commercial project in Auburn and South King County. From base prep to final finish, every job is handled with the same attention to detail and clear communication.
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Licensed, Bonded & Insured
Every project is handled by a licensed, bonded, and insured contractor — built to Washington State standards.
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Proper Base Prep for Long-Term Durability
Every pour starts with the right foundation — compacted base, correct grading, and rebar where it counts.
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Concrete, Demo & Excavation In-House
From site clearing and demolition through the finished pour — coordinated start to finish.
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Clear Estimates & Consistent Communication
Straightforward pricing, no hidden charges, and a contractor who answers the phone.
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Local Experience with South King County Properties
10+ years working with the terrain, soil conditions, and property types across Auburn and the surrounding area.
What We Do
Concrete & Site Work Services
From residential driveways to site prep and excavation — coordinated from estimate through cleanup.
Residential Concrete
Flatwork and finish work for residential properties. Plain, broom-finished, and exposed aggregate.
- —Driveways
- —Patios
- —Walkways & steps
- —Exposed aggregate
- —Broom finish
Structural Concrete
Foundations, slabs, and structural pours built to spec with rebar and proper drainage.
- —Foundations
- —Shop & garage slabs
- —ADU pads
- —Barn & RV pads
- —Reinforced footings
Site Prep & Excavation
In-house equipment for demo, grading, and site prep — coordinated start to finish.
- —Demolition & removal
- —Grading & leveling
- —Excavation
- —Trench work
- —Base compaction
Retaining Walls
Structural concrete walls engineered for South King County's terrain and soil conditions.
- —Retaining walls
- —Tiered wall systems
- —Drainage integration
- —Combination projects
- —Outdoor flatwork
How It Works
Our Concrete Process
A straightforward process from first contact to finished pour — clear scheduling, clean prep, and no surprises.
Project Consultation
Tell us about your project. We'll ask the right questions to understand scope, site conditions, and timeline.
Site Visit & Estimate
We come to you, review the site, and provide a clear itemized estimate. No hidden charges, no pressure.
Demo, Prep & Forms
Demolition, excavation, grading, and forming handled with clear scheduling and consistent communication from start to finish.
Pour, Finish & Cleanup
The pour goes in on schedule. We finish the surface, protect the concrete, and leave the site clean.
Recent Work
Concrete & Site Work Projects
A sample of recent residential projects across Auburn and South King County.
Client Reviews
Trusted by Homeowners Across South King County
“The crew did exceptional work from start to finish. My neighbors have been stopping to compliment the results — the attention to detail and the clean worksite really stood out.”
Sandra M. · Renton, WA
Google Review · Driveway & Steps
“From the very first walkthrough I could tell they knew exactly what they were doing. Proper footings, rebar throughout, clean drainage detail — and the pricing was more than fair.”
Kevin P. · Auburn, WA
Google Review · Retaining Wall Project
“Very professional, great communicators, and skilled at both prep and finish work. Reliable, efficient, and left the site spotless. My kid was sad when the crew left — that tells you everything.”
James E. · Auburn, WA
Google Review · Concrete Flatwork
Service Area
Serving Auburn & South King County
Concrete contractor built to licensed & insured standards, serving homeowners, property owners, and small commercial projects throughout South King County.
Get an Estimate
Request a Free Estimate
Have a driveway, patio, retaining wall, slab, or excavation project in mind? Send the details and we'll follow up with next steps.
- No-obligation estimates
- Built to licensed & insured standards
- Serving Auburn & South King County
- Clear estimate process
Ready to Get Started?
Call or message us for a free, no-obligation project estimate.