Concrete Contractor in Cottage Lake, WA - Level Slabs Built for Larger Lots
Allied Redmond Concrete builds driveways, patios, garage floors, footings and foundations for homes in Cottage Lake, WA. We're a Redmond crew, and we build slabs that sit level and shed water on the larger lots out here.

- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Cottage Lake homes on larger, more spread-out lots
We're a concrete contractor based in Redmond, WA. Cottage Lake is a suburban residential area of unincorporated King County where homes sit on larger parcels. The houses come in a real mix of styles, so one job is a long driveway back to a house set off the road, and the next is a patio, a walk out to a detached garage or a floor for a shop.
North of the area you cross into Snohomish County and reach Maltby, where we work too. Bigger lots usually mean bigger jobs out here, with more ground to dig out and pack and longer runs of forms, so prep takes a larger share of the work.

Concrete services for Cottage Lake properties
Concrete driveway building
Long driveways on bigger lots carry heavy trucks and years of turning, so we dig out soft ground and pack the base before anything gets poured.
Concrete patio construction
A patio off the back of the house should fall away from the walls, so we set the grade first and check where the water ends up.
Stamped concrete services
Stamped concrete gives a patio or walkway the look of stone or brick, a good fit with the mix of home styles you see around here.
Concrete sidewalk building
On a lot where the garage, the front door and the yard sit far apart, a poured walk gives you a firm, level path between them.
Garage floor concrete
When a garage or shop floor is cracked, stained or sloping the wrong way, we break it out and pour a new slab that drains toward the door.
Decorative concrete
Colored and textured finishes let a pool deck, entry or patio match the house, and we choose the finish with you based on how you'll use it.
Concrete retaining walls
Larger lots often have a slope somewhere, and a poured wall holds back the ground so you can level out a yard, a parking pad or a garden.
Concrete floor installation
For a new shop, barn or basement floor, we pour an interior slab that sits flat, so shelving, workbenches and equipment stay level.
Concrete pool decks
A pool deck needs a surface that isn't slick underfoot and that sheds splash water away from the pool and the house, so we plan for both.
Concrete steps construction
Homes set up off the driveway or the yard often need entry steps, and we form them with every step the same height so nobody catches a toe.
Slab foundation building
For a new garage, shop or addition on your property, we build the slab foundation on a dug-out, packed base so the building sits level.
Foundation installation
When you're building a new home or a large outbuilding on a larger lot, we pour the footings and walls the rest of the build depends on.
Concrete parking lot building
Small property owners with a shared lot or a wide parking area get a slab graded to drain, with joints cut so cracks land where we want them.
Concrete footings
Decks, sheds, carports and additions all need footings, the concrete pads underneath that carry the weight, and we dig them down to firm ground first.
Foundation raising
If one corner of the house or garage has settled and the floor or doors are out of line, we raise it back up and support it from below.
Concrete cutting
We saw out cracked sections, cut openings for drains or doorways and trim old slabs cleanly, so a repair or addition ties into what's already there.
Get a free on-site estimate for your Cottage Lake concrete job
Send the form and we'll reply within one business day to set a time. I come out, measure and send a written quote with each part listed on its own line, with no obligation.
(425) 285-8289- Mon–Fri: 7 AM–10 PM, Sat–Sun: 8 AM–9 PM
- hello@concretecontractorredmond.com
- Redmond, WA 98052
Working in Cottage Lake: county permits and what to check
Cottage Lake is unincorporated King County, so if your job needs a permit, it comes from the county's Department of Local Services Permitting, not a city hall. We tell you at the estimate whether you need one and handle the application and inspection requests, and the pour date waits on that permit, so a permitted job takes longer to get on the calendar. Before you hire anyone, ask for their state contractor registration and check it with the Washington State Department of Labor & Industries. The county's own business license only covers certain regulated businesses outside city limits, so the state registration is the one that tells you a contractor can do this work. We're licensed and insured. The price moves with the size of the slab, how much soft ground comes out, how close the truck can get and the finish you pick. The schedule moves with the permit and the cure time, which is the wait while new concrete hardens before you use it.
On the west side, along State Route 202, Cottage Lake runs up against Woodinville, which is its own city. A house near that edge can fall inside Woodinville instead of the county, so before we file anything I confirm which one your address belongs to, and we do the same driveway and patio work on both sides.

Why concrete on bigger lots sinks, cracks and pools
A lot of the old driveways and patios we break out failed from underneath. Sometimes the ground was raked level instead of dug out and packed, so the edges sank as the dirt settled. Other times nobody checked where the water runs, so it pools by the garage or drains back toward the house. We dig down to firm subgrade, the ground the slab sits on, pack the base and set the grade so water runs away from the house before any forms go up. Cracks show up in random places when control joints, the grooves cut so the slab cracks along a line we chose, go in late or not at all, so we cut them on time.
The base is the part of the job you never see, and it's the first thing people want to trim when a quote runs high. I'd rather you pick a plain broom finish, the light texture that gives shoes and tires some grip, than skimp on prep, because a fancy surface on a bad base still sinks and you can't fix prep once the truck has left.
How a concrete job runs in Cottage Lake, start to finish
Here's how a Cottage Lake job runs from your side, from the first call to the day you can use the new slab.
Call or send the form
Tell us what you want poured and roughly where it goes on the lot. We get back to you and set a time for me to come out.
I walk and measure the site
I look at the ground, measure and ask how you'll use the space, so it helps if you're there. You get a written quote with each part of the job on its own line, so you can see where the money goes.
We set a date and permits
Once you say go, we pick a date, and if your job needs a permit, we file it with the county and book the inspections. The pour date waits on that permit, so we start the paperwork right away.
I run the job through cleanup
Our crew digs out, packs the base, forms and pours, and I'm on site running it the whole way. When we finish, we clean up and I tell you how long to stay off the new concrete.
Questions about concrete work in Cottage Lake
(425) 285-8289How much does a concrete driveway cost in Cottage Lake, WA?
It comes down to size, prep and access, and on the larger lots out here size is usually the biggest part of the price. A long driveway needs more digging out, more base and more concrete, breaking out an old slab adds time, and a plain broom finish costs less than stamped or colored concrete. I'll come measure and send a written quote with each part on its own line, so you can see what each choice does to the total.
How do I know if my Cottage Lake concrete project needs a permit?
Big flatwork like driveways, patios and parking pads can need one, because the county requires a clearing and grading permit once a project adds more than 2,000 square feet of new hard surface that water can't soak into, or grades inside a critical area. Digging out more than 5 feet deep or 100 cubic yards, or filling more than 3 feet deep or 100 cubic yards, needs it too, and a long driveway on a big lot can get there faster than people expect. You can read the county's permit guide, and at the estimate I'll tell you whether your job needs one.
Does a concrete contractor in Cottage Lake need to be registered with the state?
Yes, Washington requires every construction contractor to register with the state before they bid, advertise or do the work. State law also requires registered contractors to be bonded and insured to protect the public. Ask for the registration before you sign anything.
Which building code applies to concrete work in unincorporated King County?
New permit applications here fall under the Washington State Building Code, with the state's and King County's own amendments. If your slab, footing or foundation needs a permit, that's the code it falls under, and it's what we build to.
What if my Cottage Lake property is in a floodplain or near a steep slope?
Expect extra permit steps, because any development in a mapped floodplain needs a permit, and a new or substantially improved home there has to be raised 3 feet above the 100-year flood level. On sloped ground, a geological report isn't required for work outside the buffer and setback and more than 65 feet from a landslide hazard area, so where the slab sits on your lot matters. I'll ask about this at the estimate, and if it's outside what we handle, I'll point you to the right permit office.
How long does a new concrete driveway need to cure before I can drive on it?
Plan on a few days before you walk on it and longer before you park on it, because concrete keeps hardening and gaining strength well after the pour. On a lot with one long driveway and no other way in, that's the wait to plan around, so we talk about where you'll park before we pour. When we finish, I'll tell you when it's ready for feet and when it's ready for tires.
Redmond, WA
Tell us about your Cottage Lake project
Call (425) 285-8289 or send the form with a few lines about the lot and what you want poured, because starting early leaves room for any county permit before the date you want.




