Concrete Contractor in Kent, WA - Slabs Built for Valley and Hill Ground

They do if your address is inside Kent city limits, and you can check your address on the city's site by typing it in. Washington's state building code is in effect in its cities and counties, and for houses that means the International Residential Code with the state's own changes. If you're not sure where your address falls, I check it before we write anything up.

Look the company up with the Washington Department of Labor & Industries, because the state requires every construction contractor to register there and to be bonded and insured. The registration number has to appear on the contractor's ads, business cards and estimates, so ask for it if you don't see it. For renewals dated July 1, 2024 or later, the state's bond is $15,000 for a specialty contractor and $30,000 for a general contractor.

It may be if your house sits on the valley floor near the river, and the city's permit page lists Green River flooding information, flood resources and FEMA elevation certificates you can look up. King County's flood district also has a draft plan for reducing flood risk along the Lower Green River, which runs through parts of Kent and Auburn. For concrete, that's one more reason I look hard at drainage and how wet the ground is before we price anything.

It comes down to the size, how much old concrete we tear out and haul off, and how much digging and base work your ground needs, so I give you a written figure after I've seen it. Softer valley lots can need more digging, and a steep or tight driveway, a thicker slab or a stamped finish all add to it, while a plain broom finish, the light texture that gives tires and shoes grip, costs less. If you need to trim the budget, cut the finish and keep the base, because nobody sees the base on day one but it's the part you can't fix later without tearing the slab out.

Most of it starts underneath, when the subgrade, the ground the slab sits on, was raked level instead of dug out and packed, so the slab settles with the dirt. Water running toward the house or pooling at the edges softens that ground, and control joints, the grooves cut so the slab cracks along a line we chose, often get skipped or cut too late. We pack the base, check where your water goes, use rebar, the steel inside that holds cracks tight, where the slab needs it, and cut joints on time so cracks land in the joints and not across the middle.

You'll walk on it well before you drive on it, because concrete keeps curing, slowly gaining strength, for days after the pour. The tear-out and base work come first, and that's when the old driveway is already gone. I'll tell you the walking and driving days for your slab when we set the pour, since they turn on the mix, the thickness and the conditions that week.