Concrete Companyin Gardena, CA
A concrete company in Gardena works to a 50 percent cap: no more than half of an R-1 front yard, driveway included, may be paved or covered with hardscape. Work in the street needs a City encroachment permit, and a retaining wall over 3 feet needs a permit and engineering. Measure the yard before the pour.
Most of Gardena's flatwork was poured in the decades when farms became subdivisions. The Berryland strawberry fields were cut into streets and lots after the city incorporated in 1930, and the 2024 Census estimates put 28.4 percent of today's homes in the 1950s and 16.5 percent in the 1960s, with a median year built of 1964. The walks, driveways and block walls on those lots are now six or seven decades old, so a typical call is a replacement, not a first pour.
MDG Builders, CSLB #1040337, is a Tarzana general contractor that plans the pour, chases the permit answers and manages the schedule; a licensed concrete or masonry subcontractor forms and finishes the work. Regional prices are on our concrete page, the Gardena overview lists our other trades here, and the City's permit information page is where Building and Safety's rules begin. A new slab often pairs with flooring in Gardena or a deck in Gardena.
What Gardena's Municipal Code and fee schedule say about concrete
Where concrete permits come from in Gardena: City of Gardena Community Development Department, Building and Safety Division.
- In the R-1 zone no more than 50 percent of the front yard area, including driveways, may be paved or covered with hardscape, the remaining area must be permanently landscaped with softscape and a permanent irrigation system subject to City approval, and no more than one driveway is allowed to a public street on a parcel with less than 100 feet of frontage (NMC 18.12.050).
- NMC 13.56.050 requires an encroachment permit from the City Engineer before anyone places, constructs or repairs any curb, gutter, sidewalk, driveway, pavement, base course, retaining or garden wall, storm drain or pipe in the public right-of-way, places a trash dumpster or debris in the street, or plants or removes trees in a right-of-way.
- Public Works encroachment fees in the fee schedule: driveway approach $306, curb and gutter $305 for the first 50 linear feet and $93 for each additional 50, sidewalk $305 for the first 100 square feet and $93 for each additional 100, separate pour inspection $218, dumpster or moving container in the street $153 per week, and traffic control $248 for one day and $115 for each additional day.
- A grading plan prepared by a California civil engineer is required when improvements generate 50 cubic yards or more of combined cut and fill, which covers large slab and patio pours with excavation, and the Engineering Department must approve the compaction report and pad certification before the permit issues.
- The City's Residential LID checklist applies to an addition or alteration that alters 50 percent or more of a property's impervious surfaces (as well as new development, hillside development and redevelopment) and then requires at least two best management practices such as permeable pavement (which must carry an H20 load for fire access), downspout routing with a 30 inch deep impervious liner or edge restraint within 5 feet of property lines and structures, a cistern, or a rain garden.
- Gardena's local amendment limits the permit exemption for retaining walls to 3 feet measured from the bottom of the footing, so a garden or retaining wall over that height needs a permit, and the 2019 block wall detail says all retaining walls shall be engineered.
- The City's block wall standard specifies 2,500 psi concrete at 28 days for footings, the footing in undisturbed soil with steel held 3 inches off the soil, and says the standard cannot be used for retaining walls or for grade differences above 6 inches.
- The garage standards (NMC 18.40.070) require a two-car garage to be at least 20 by 20 feet inside and free of obstructions, so a garage slab or floor coating job in Gardena is judged against a 400 square foot clear parking area.
Sources for these rules
- ecode360.com: 48208203
- ecode360.com: 48206692
- cityofgardena.org: City Fee Schedule Effective July 1 2026
- cityofgardena.org: BLD 010 Residential Submittal Requirements rev 02 2026
- cityofgardena.org: Residential LID Checklist Gardena
- ecode360.com: 48207175
- cityofgardena.org: BLD 1110 Block Wall Standard rev 02 2026
- ecode360.com: 48209742
How much of a Gardena front yard can a driveway cover?
Half. In the R-1 zone, NMC 18.12.050 caps paved or hardscaped surface, driveways included, at 50 percent of the front yard area, and the rest must be permanently landscaped with softscape and a permanent irrigation system subject to City approval. A parcel with less than 100 feet of street frontage may have only one driveway to a public street.
Try it on the zone's minimums: a 50 foot wide lot with the 20 foot front setback gives a front yard of 1,000 square feet, so the cap would be 500 square feet for the driveway, walk and any patio together. How the code measures front yard area is a Planning question, and we ask before drawing anything wider than the existing apron. Planning is at (310) 217-9524 or planning@cityofgardena.org.
The cap works against the usual request. Homeowners who want to park a second car in front tend to ask for a wider driveway, and the code answers with a ceiling on all front yard paving, not on width.
Does a Gardena driveway apron or sidewalk need an encroachment permit?
Yes, anything in the public right of way does. NMC 13.56.050 requires an encroachment permit from the City Engineer before anyone places, builds or repairs a curb, gutter, sidewalk, driveway, pavement or base course there, sets a trash dumpster or debris in the street, or plants or removes a tree in it. The private slab behind the sidewalk is a separate question from the apron at the curb.
The City's fee schedule effective July 1, 2026 lists the Public Works lines: $306 for a driveway approach, $305 for the first 50 linear feet of curb and gutter and $93 for each additional 50, $305 for the first 100 square feet of sidewalk and $93 for each additional 100, $218 for a separate pour inspection, $153 per week for a dumpster or moving container in the street, and traffic control at $248 for one day and $115 for each extra day. Those are City fees, not contractor prices.
Concrete trucks and saw crews also keep to the noise window in NMC 8.36.080 G: 7:00 a.m. to 6:00 p.m. on weekdays and 9:00 a.m. to 6:00 p.m. on Saturday, never on Sunday or a federal holiday.
What does concrete work cost for a 20 by 20 garage pad or patio in Gardena?
Start with the size the City already uses. NMC 18.40.070 requires a two-car garage to be at least 20 by 20 feet inside and free of obstructions, so a garage slab in Gardena is judged against 400 square feet of clear parking area, and a patio of the same size is a fair comparison. We found no Gardena price study, so the numbers come from our Los Angeles ranges, built on Angi's 2026 city pages and HomeGuide.
Multiply it out. Plain flatwork in jobs of 300 square feet or more runs $8 to $14 per square foot, so 400 square feet lands between $3,200 and $5,600. Replacing a driveway of that size with the old slab demolished is $9 to $20 per square foot, or $3,600 to $8,000. We rate these medium in confidence for plain concrete and lower for anything decorative, and small jobs often price above the per-foot range because of minimum charges.
Labor is a real share of the bill. The federal survey of May 2025 puts cement masons in the Los Angeles area at a mean of $33.67 an hour. Demolition, haul-off, drainage and base prep should appear as separate lines in the proposal, and our license check guide shows how to verify each firm.
When does a Gardena retaining or block wall need a permit?
The City's own papers disagree, so ask. Gardena's local amendment exempts a retaining wall from a permit only up to 3 feet, measured from the bottom of the footing to the top of the wall, and not if it carries a surcharge (NMC 15.06.020). The 2026 Block Wall Standard says a wall over 3 feet above adjacent grade needs a building permit, and the older 2019 detail names 3 feet 6 inches for masonry or concrete fences. Footing depth makes the first measure stricter than the second.
A 4 foot retaining wall is above every one of those lines, so plan on a permit and an engineer's drawings, and treat the drainage behind it as part of the design the engineer stamps. The block wall standard says it cannot be used for retaining walls or for grade differences above 6 inches, and the 2019 detail adds that all retaining walls shall be engineered.
For a freestanding block wall the standard calls for 2,500 psi footing concrete, steel held 3 inches off the soil and three inspections: footing trench, rebar before grout, and final after grouting. CSLB's C-29 masonry class covers concrete block walls and C-8 covers poured concrete work.
Do the liquefaction strip and fault corner change a Gardena slab?
In two places they can. Artesia Boulevard and the Dominguez Channel mark a State-mapped liquefaction area in the south, per the City's Public Safety Plan, and when we tested the County's copy of that layer 92 of 2,283 points (4.0 percent) landed inside, every one in a narrow strip on the southern edge. In the northeast, near El Segundo Boulevard and Vermont Avenue, an Alquist-Priolo fault zone of the Newport-Inglewood system touches the city, though only 1 sample point reached it. Policy PS 3.2 requires geotechnical studies for all new development, so a soils report is how you know a given lot.
Design numbers are not settled either. The City's code notice says Seismic Design Category D without a soils report and a 100 mph basic wind speed, while the 2026 block wall sheet lists Category E and 110 mph. We state both and ask Building and Safety which one plan check will use.
A grading plan by a California civil engineer is required when the work generates 50 cubic yards or more of combined cut and fill, which can reach a large patio pour with excavation.
What does stamped concrete cost in Gardena, and what does permeable paving have to carry?
A stamped, stained or exposed aggregate surface is priced about twice as high as plain concrete, at $15 to $30 per square foot in the Los Angeles ranges we use, so the same 400 square feet would be $6,000 to $12,000. That range has lower confidence than plain flatwork, because decorative work depends on the crew.
Surface choice meets a drainage rule. The City's Residential LID checklist applies to an addition or alteration that alters 50 percent or more of a property's impervious surfaces, and then asks for at least two best management practices. Permeable pavement is one, and it must carry an H20 load so fire apparatus can cross it. Others are routing downspouts, a cistern or a rain garden, and downspout routing needs a 30 inch deep impervious liner or an edge restraint within 5 feet of property lines and structures.
Ask early whether your project counts, since replacing most of a driveway and patio at once can reach 50 percent.
What does the City require when concrete is broken out and hauled away?
A permitted job that breaks out concrete needs the City's construction and demolition recycling plan with the permit. Waste Management is Gardena's only authorized hauler, using another one means the deposit refund is denied, and the diversion deposit is at least $5,000 unless the project is categorically exempt; the form has a separate exemption path, Form CD-1a. A contractor must file a diversion report within 60 days of finishing.
Permit timing has its own wrinkle. The City's page says a permit is valid for 180 days unless work is active, while NMC 15.06.030 says a permit lapses if work does not start within 12 months or stops for 12 months, with extensions of up to 180 days. Ask which one governs, because a winter rain delay can matter.
Contractors working in Gardena need a City business license, and the City's page lists $75 plus a $4 state fee for a C specialty class and $150 plus $4 for a general contractor.
Concrete photos from Gardena and nearby communities
Six photos of walks, driveways, forms, rebar and block walls from jobs around Gardena and its neighbors. Tap a photo to enlarge it.
What concrete costs around Gardena
Every dollar figure about contractors here comes from the Los Angeles ranges on our concrete page, so none is a Gardena quote, and the street fees above are City fees only. The same lot often needs other trades, so see concrete in Hawthorne, concrete in Torrance, concrete in Carson and concrete in Los Angeles for how neighbors differ. Our flooring cost guide covers what goes on top of a slab.
| What it covers | Typical range |
|---|---|
| Patio, walkway or slab, broom finish, 300 sq ft or more | $8 to $14 per square foot |
| Decorative: stained, stamped or exposed aggregate | $15 to $30 per square foot |
| Driveway replacement, with demolition of the old slab | $9 to $20 per square foot |
| 20 by 20 foot plain patio (400 sq ft) | About $3,200 to $5,600 |
| 20 by 20 foot decorative patio (400 sq ft) | About $6,000 to $12,000 |
| Small jobs under 300 sq ft | Usually above the per-foot range |
| Retaining walls | Set by the written proposal |
Gardena concrete questions, answered
Can I pour a concrete patio without a permit?
Possibly, in Gardena, but the City's pages do not name a patio slab, so ask Building and Safety with your size and drainage plan. Three things apply either way: the 50 percent front yard hardscape cap in R-1 zones, a grading plan once cut and fill reach 50 cubic yards, and the LID checklist when half of the impervious area changes.
Can I expand my driveway without a permit?
Not freely. A driveway counts toward the 50 percent front yard hardscape cap in NMC 18.12.050, and the apron at the curb sits in the public right of way, which needs an encroachment permit (driveway approach fee $306 in the July 2026 schedule). Measure the front yard first, then call Planning at (310) 217-9524.
How much should a 20x20 concrete patio cost?
About $3,200 to $5,600 for a plain broom finish and $6,000 to $12,000 for stamped or stained, on our Los Angeles ranges at $8 to $14 and $15 to $30 per square foot. Gardena has no price study of its own, and small jobs often price above the per-foot range, so treat the figures as a guide.
How much does a concrete driveway cost in Gardena?
On our Los Angeles range of $9 to $20 per square foot with the old slab demolished, a 400 square foot driveway comes to $3,600 to $8,000. Haul-off, grading, drainage and a driveway approach permit add lines. No Gardena study exists in our sources, so ask for an itemized proposal.
Is 4 inches of concrete thick enough for a driveway?
It is the figure most homeowner guides give for passenger cars, but we found no Gardena code section that sets a driveway thickness, so we treat it as practice, not law. Delivery trucks, weak soil near the southern liquefaction strip or tree roots can justify more, and the proposal should state thickness and base.
What is the maximum height of a retaining wall without a permit in California?
In Gardena it is 3 feet, measured from the bottom of the footing to the top of the wall, and only if it carries no surcharge. The state model code allows 4 feet, but Gardena's amendment is stricter. The City's block wall sheets use a different measure, 3 feet above grade, so confirm yours before you build.
Does a 4 ft retaining wall need drainage?
In Gardena a wall that tall needs a permit and engineered drawings, and the engineer decides the drainage, since the City's pages we read set no drainage number. Water has to go somewhere, so the proposal should show how it leaves the wall and where it ends up.
How much does a 20x20 stamped concrete patio cost?
Roughly $6,000 to $12,000 in our Los Angeles ranges, at $15 to $30 per square foot for stamped, stained or exposed aggregate finishes, before demolition and drainage. Lower confidence than plain concrete, and two bids can differ widely for the same pattern. Ask to see finished stamped work, not a catalog.
How wide should a concrete driveway be in Gardena?
We found no Gardena width rule. What the code does set is one driveway per street on parcels under 100 feet of frontage, the 50 percent front yard hardscape cap and an encroachment permit for the apron. Those three usually decide how wide a driveway can get, so ask Planning before you draw it.
What license does a concrete company need for concrete work in Gardena?
A California license for any job of $1,000 or more with materials, usually C-8 Concrete for pouring and finishing or C-29 Masonry for block walls, plus a Gardena business license. Check the number on CSLB's site and ask for a certificate of insurance. MDG holds a General Building license and hires licensed subcontractors for the pour.
Show us the front yard and what you want poured
Give us the street, the width of the lot, how much of the front yard is already paved and what you want to build. We read the 50 percent cap and the street permit rules before we call.