Concrete Contractor in Kent, WA - Slabs Built for Valley and Hillside Lots
Form & Pour Renton Concrete Company pours driveways, patios, walkways, steps and slabs for homes in Kent, WA, from the valley floor up to the hillside streets, with the base dug out and packed first.
- Licensed and insured.
- Free in-person estimates.
- We respond within 1 business day.
Kent homes from the valley floor to the hills
Kent sits just down the valley from us, and the lots change a lot from one part of the city to the next. Down on the Green River valley floor you'll find flat lots, older houses near downtown and newer subdivisions, mixed in with warehouses and business parks. Up on the hills to the east and west, yards slope and driveways climb from the street.
We're a concrete contractor in Renton, WA, and we pour the same driveways, patios and steps here that we do at home and down the road in Auburn. What differs is the lot, flat in the valley and sloped on the hills, and that decides how much digging, forming and grading a job needs before any concrete goes in.
Concrete work we do for Kent homes and properties
When a Kent driveway has cracked, sunk at the garage or sent water toward the house, we dig out the soft base and pour new.
A patio on a flat valley lot needs a slight fall away from the house, so we set that slope before the pour, not after puddles show up.
Stamped concrete gives a Kent patio or walk the look of stone or brick, and we still build the same packed base under it as any plain slab.
We replace front walks that have heaved or settled into trip edges, which we see often on older Kent streets, and set them to shed water.
If your garage slab is cracked, stained or sloping the wrong way, we break it out and pour a new floor that drains toward the door.
Colored and textured concrete suits Kent homeowners who want an entry or patio that matches the house, and we talk through upkeep before you choose.
On hillside lots in Kent, a concrete wall can hold a cut slope or a terraced yard, and I'll tell you when the wall needs an engineer's design.
We pour interior slabs for shops, additions and outbuildings around Kent, with the base packed and the surface finished to suit how the room gets used.
A Kent pool deck takes wet feet and splashing all summer, so we give it a slip-resistant texture and slope it away from the pool and house.
Hillside homes in Kent often have front steps that have crumbled or pulled away from the house, and we rebuild them with even risers on solid footing.
We pour slab foundations for garages, backyard cottages and additions in Kent, starting with the subgrade, the ground the slab sits on, dug and packed firm.
For new foundations in Kent, we form and pour to the approved plans, with the footings and walls set exactly where the drawings put them.
Kent has plenty of small businesses, churches and apartment complexes, and we pour small concrete lots sized for the traffic and graded so water drains off.
Decks, sheds and additions in Kent all sit on footings, and we dig them to the depth your plans call for so the structure above stays put.
When part of a Kent house or garage has dropped, we find out why it settled before lifting it, and bring in an engineer when it calls for one.
We saw-cut openings, trenches and clean edges in Kent slabs and walls, so a repair or new section meets the old concrete along a straight line.
Get a written estimate for your Kent concrete project
We reply within one business day of your message to set a time. I come out myself to walk the site and measure, and you get the scope in writing, free and with no obligation.
(425) 264-4089- Based in
- Renton, WA 98057
- Hours
- Mon–Sun: 7 AM–11 PM
Permits, licenses and pricing for Kent concrete work
Inside Kent city limits, permits for residential work come from the city's Permit Center, which works by appointment, so whether your project needs one is the city's call rather than ours. If it does, that appointment and the approval come before we dig, and that can push back your start. We're licensed and insured, and if your job may need a permit, I go over it with you at the estimate and check which city or county office covers your address, and we can handle the application or help you with yours. It's also fair to ask any contractor two things: whether they're registered with the state, which every Washington construction contractor must be, and whether they hold the City Business License that Kent requires of every business working here.
From Renton it's a short drive down to Kent, so I can come out for the estimate and stop by while the work is going. What moves the price here is mostly the size of the slab, how much old concrete has to be broken out and hauled away, how deep we dig for a firm base, and whether the truck can reach the forms or we have to pump or wheel the concrete in, which comes up on tight hillside drives. The schedule turns on any permit and on our crew's calendar, and your written estimate lays out the prep and the concrete work so you can see what each part involves. We plan jobs the same way up in Bellevue and the other cities around us.
Why Kent driveways and patios end up needing work
On the flat lots down in the valley, water has little fall to carry it off, so a driveway or patio that was poured dead level, or that has settled toward the house, ends up holding puddles or sending water against the foundation. Before we set a form, I check where the water runs on your lot, and we give the new slab a slight, steady fall toward the yard or the street.
On the older driveways, walks and steps we see around Kent, the sinking and wide cracks usually trace back to a base that was raked level instead of dug out and packed, so the slab sank with the dirt under it. We dig down to firm ground and pack the base before anything else, and add rebar, steel bars that hold the slab together, where the load or the slope calls for it.
How a concrete job with us runs in Kent
Here's how a job goes from your first call to the last walk-through, and where I'll ask for a little of your time along the way.
Call or send the form
Tell us a little about the job, and we'll set a time for me to come out to your Kent address. It helps if you can be there, so I can hear how you plan to use the space.
Walk the site and estimate
I measure, look at the ground and where water runs off it, and answer your questions. You get a written estimate covering the prep, the concrete work, anything we'll ask of you before pour day and what the city or county may want to see, so there's no guessing about what you're paying for.
Our crew preps and pours
Our small crew digs out, packs the base, sets forms and pours, and I check in as the job goes. We keep the area neat, cover what needs covering and keep our trucks and materials out of your neighbors' way.
Walk the finished work together
Before we pack up, we walk the finished slab with you and go over curing, the wait while the concrete gains strength. That way you know when it's ready for feet and when it's ready for a car.
Questions about concrete work in Kent
How do I know if my house is inside Kent city limits for a permit?
You can enter your street address on the City of Kent's website to see whether the property is inside city limits. It's worth the minute, because an address near the edges can fall outside them, and then the city's rules and permit office may not be the ones that apply. I check the same thing before we plan your job.
How do I check if a concrete contractor is registered in Washington?
Every construction contractor in Washington has to register with the state Department of Labor & Industries, so ask for the registration number and confirm it with the department. State law says that number has to appear on a contractor's ads, business cards, estimates and bids. It also requires registered contractors to be bonded and insured, and for registrations renewed since July 2024 the bond is $30,000 for a general contractor and $15,000 for a specialty contractor.
What building code applies to a concrete foundation or slab in Kent?
Kent follows Washington's state building code, which state law puts in effect in every city and county, and for houses that means the International Residential Code with the state's own changes. That's the code a footing, slab or foundation plan is held to. When a design question goes past ordinary flatwork, the flat concrete like driveways, patios and walks, I'll say so and point you to the city or an engineer.
Is my Kent home in the Green River flood area, and does it matter for concrete work?
The city's permit pages list Green River flooding information, flood resources and FEMA elevation certificates for homes in or near the floodplain, so that's the place to start. King County's flood control district also has a draft long-term plan for reducing flood risk along the lower Green River where it runs through Kent. If your house is near the river, please mention it at the estimate, because I'd want to know what the city may ask for before we plan the slab and its drainage.
How much does a new concrete driveway cost in Kent?
I don't quote a Kent driveway until I've walked it, because the price follows the site, and the written estimate shows what goes into yours. Beyond the size, tear-out, base and access points above, a thicker slab, extra forming on a steep drive, and a stamped or colored finish in place of a broom finish, the brushed texture that gives shoes and tires grip, all add cost. If the budget is tight, I'd keep the money in the base and choose the plainer finish, because the base is hidden on day one but it's the part you can't fix later without tearing the slab out.
Will my new concrete driveway in Kent crack like the old one?
A new slab can still get a fine crack, because concrete shrinks as it cures, but the work we do keeps cracks small and in the places we pick. We cut control joints, shallow grooves that give the slab a planned place to crack, while the concrete is still young, and we avoid pouring in the midday heat that can leave a weak, dusty top. The wide cracks and sunken corners on most old slabs come from the base, which is why we spend our time there.
Renton, WA
Get your Kent concrete estimate on the calendar
Call (425) 264-4089 or use the form, and you'll have our scope in writing to set beside any other quote you're weighing.