Concrete contractor in Gardena, CA - driveways and slabs on a packed base

Maybe not for the driveway itself, since the city lists open driveways and walkways among the most common exceptions, but Gardena Building Services issues permits for most other home construction, including additions, repairs and alterations, so a slab for a room addition is a different story. If the work touches the public sidewalk, alley or street, like rebuilding the apron at the curb, you also need a permit from the city's Public Works Engineering Division. If permit work starts before the permit is pulled, the city quadruples the fees, so it pays to settle this first. I go over the permit side at the estimate, tell you which office is involved and who handles each step, and walk you through any part that falls to you as the owner.

A retaining wall over 3 feet tall falls under the permit rules, because the city's code only exempts walls up to that height, measured from the bottom of the footing to the top of the wall. That means you measure from the footing, not from the grass, so a wall that looks short can still count. The exemption also ends when the wall holds back an added load, like a driveway or a slope right above it, so I'd check with the city on any wall like that before we dig.

Yes, a contractor pouring concrete in Gardena usually needs both a state contractor license and a city business license. The state contractor board requires a current license from anyone contracting for work that needs a building permit, uses employees, or runs $1,000 or more in combined labor and materials, and the only exemption is a job that needs no permit, uses no employees and costs under $1,000 all in. The city requires a business license from anyone doing business in Gardena, including contractors based outside it. We're fully licensed and insured, and it's fair to ask anyone you're talking to about both.

The price of a Gardena driveway comes down to its size, how much old concrete we break out and haul away, what shape the ground underneath is in and the finish you pick. A broom finish, a light dragged texture that gives shoes and tires grip, costs less than color or stamping. If the budget's tight, I'd rather trim the finish than the base, because a nice surface on poorly packed dirt sinks and cracks, and you can't fix the base later without tearing it all out. Your written estimate gives you the figure for your own job.

Most cracking and sinking comes from what's under the slab and how it was poured, not from the concrete itself. A base that was raked flat instead of dug out and packed settles with the dirt, a slab poured in midday heat can end up with a weak, dusty top, and joints cut late or skipped let cracks run wherever they like. Concrete still shrinks a little as it cures, so we pack the base first and cut control joints, straight grooves that give those small cracks a place to go.

The first thing to find out is whether your lot sits in a state-mapped hazard zone, because for those lots the state says weak soil or rock is likely underneath, and it can fail in an earthquake and damage the building unless grading and construction take precautions. An older city plan also shows a state-mapped active fault zone in the northeast part of Gardena, near El Segundo Boulevard and Vermont Avenue. For a slab foundation or footings, I go over this with you at the estimate so the plans and the price account for it before we dig.