Concrete Companyin Westminster, CA
A concrete company in Westminster works inside a front yard cap: driveways and walkways may cover 50 to 75 percent of the front yard, by lot width. The City's code exempts driveways and sidewalks under 30 inches and retaining walls to 4 feet from a building permit, but zoning and grading rules still apply. Confirm each with the Building Division.
Westminster's concrete sits on old farm fields. Wikipedia says the Presbyterian colony founded in 1870 grew dairy products, walnuts, strawberries, celery, lima beans, sugar beets and goldfish, and that building stayed slow through the Depression, the 1933 earthquake and a severe 1938 flood. The city incorporated in 1957 as Tri City, a merger that Barber City joined and Midway City refused, and took back the name Westminster by a vote five months later. Census ACS 2024 estimates count 15,682 homes from the 1960s and 1970s, about 54 percent of 28,953, so many drives and walks are 47 to 66 years old.
MDG Builders, CSLB #1040337, is a Tarzana general contractor and not a pour crew: we write the scope, put the setback and permit questions to Westminster's Building Division and hire a licensed concrete subcontractor to form, place and finish. The City site and the common code hosts refused our tools, so the rules below come from a third-party mirror of the code and should be confirmed with the City. Finishes are explained on the concrete page, how general contractors use subcontractors describes our role, and the Westminster overview lists the other trades we run here.
What Westminster's municipal code and Building Division say about concrete work
Where concrete permits come from in Westminster: City of Westminster Community Development Department, Building Division.
- The City's exemption list covers sidewalks and driveways not more than 30 inches above adjacent grade that are not over a basement or story below, not part of an accessible route and not part of a commercial site. Retaining walls up to 4 feet (footing bottom to wall top) are also exempt.
- Westminster caps how much of a front yard a driveway (including walkways) may cover by lot width: 50 percent for lots 60 feet wide or more, 55 percent for 55 to under 60 feet, 60 percent for 50 to under 55, 65 percent for 45 to under 50, 70 percent for 40 to under 45, and 75 percent for lots under 40 feet wide, plus 50 percent of the street side yard on corner lots. Front and street side yards must be landscaped and cannot be used for parking beyond the driveway.
- For single-family yards that must be landscaped, decorative hardscape (rock, stone, brick, sculptural elements or similar impervious materials) may count toward the landscaped area but not exceed 50 percent of the required landscaped area in a front or street side yard and may not be used for parking. Where more than 200 square feet of existing turf, plants, shrubs or trees in a required yard is removed and artificial turf is not proposed, the owner must first get a Zoning Clearance, decorative pervious groundcover needs one plant, shrub or tree per 25 square feet (60 percent of plants at least 5 gallons, trees at least 15 gallons), and no landscaped area may be used for parking.
- Under the City's grading appendix amendment, a grading permit is required except for excavations under 25 cubic yards and less than 1 foot deep, fills under 1 foot deep on slopes flatter than 5:1 under 25 cubic yards, and fills under 3 feet deep that support no structure and stay under 25 cubic yards. Paving over 3,000 square feet needs a grading permit unless waived by the City Engineer, while resurfacing or maintenance of paved surfaces is exempt.
- Grade-level decks, steps, terraces and similar site elements placed directly on finish grade and up to 24 inches above it are exempt from setback requirements, and fences and landscaping are likewise exempt, so patio slabs can sit in a setback while taller or roofed structures cannot.
- For single-family yards where artificial turf is used in the front or street side yard, at least 10 percent of that yard must be live plants, turf is limited to cut-pile in-filled types with an 8 to 12 year minimum no-fade warranty, vehicles may not park on it, and edges and seams must be anchored with drainage and a bender board.
- CSLB defines the C-8 Concrete classification as forming, pouring, placing, finishing and installing mass, pavement, flat and other concrete work.
How much of a Westminster front yard can a driveway and walkway cover?
Between 50 and 75 percent, set by how wide the lot is. The zoning code caps driveway and walkway coverage of the front yard at 50 percent for lots 60 feet wide or more, 55 percent for 55 to under 60 feet, 60 percent for 50 to under 55, 65 percent for 45 to under 50, 70 percent for 40 to under 45 and 75 percent for lots under 40 feet wide.
Corner lots add a second yard. The street side yard of a corner lot is capped at 50 percent, and front and street side yards must be landscaped and cannot be used for parking beyond the driveway. Widening a drive for a second car is therefore a measuring job first: lot width, current coverage and planned width, drawn before a form is set.
- What is the lot width, and which cap applies?
- What share of the front yard is paved after the change?
- Will any paved area be used for parking outside the driveway?
Can decorative concrete or hardscape replace a Westminster front lawn?
Only in part. In a front or street side yard that must be landscaped, decorative hardscape such as rock, stone, brick or similar impervious material may count toward the landscaped area but no more than 50 percent of the required area, and it cannot be used for parking. A stamped or colored slab in a front yard runs into the same share.
Removing plants triggers paperwork. Where more than 200 square feet of existing turf, plants, shrubs or trees in a required yard is taken out and artificial turf is not proposed, the owner must first get a Zoning Clearance. Decorative pervious groundcover needs one plant, shrub or tree per 25 square feet, with 60 percent of the plants at least 5 gallons and trees at least 15 gallons.
Artificial turf has its own list. In a front or street side yard at least 10 percent must stay live plants, the turf must be cut-pile and in-filled with an 8 to 12 year minimum no-fade warranty, vehicles may not park on it, and edges and seams must be anchored with drainage and a bender board.
Is a permit needed to pour a patio, walkway or driveway in Westminster?
A driveway or sidewalk may not need a building permit, but a patio slab is not named. Section 301.2.1 of the City's Administrative Code exempts sidewalks and driveways not more than 30 inches above adjacent grade that are not over a basement or story below, not part of an accessible route and not part of a commercial site. Exempt work still has to obey every other City rule, which for flatwork means the coverage caps above.
Grading is the second trigger. Under the City's grading amendment a permit is required except for excavation under 25 cubic yards and less than 1 foot deep and for small, shallow fills, and paving over 3,000 square feet needs one unless the City Engineer waives it, while resurfacing or maintenance of paved surfaces is exempt. Most backyards fall below those numbers, and a long driveway job may not.
Work at grade gets room at the lot line. Decks, steps, terraces and similar site elements placed on finish grade and up to 24 inches above it are exempt from setback requirements, so a patio slab can sit in a setback while a roofed or taller structure cannot. Ask the Building Division about your slab and keep the reply in writing.
How tall can a retaining wall or block wall be in Westminster without a building permit?
Four feet, measured two different ways. The Administrative Code exempts retaining walls not over 4 feet from the bottom of the footing to the top of the wall, and masonry walls or fences not over 4 feet high from grade on either side. The text does not say whether the 4 foot line also covers wood fences, and a wall that holds a driveway or a slope is a harder case, so confirm the number for your wall.
Zoning sets height whatever the permit says. A fence, wall or hedge inside the required front setback is limited to 3 feet and R1 side and rear yards allow 6 feet, so a 4 foot block wall that skips a building permit can still be too tall at the front. On a corner lot the 3 foot limit applies within 25 feet of the intersection of two streets.
License class follows the material: poured walls fall under CSLB's C-8 concrete class, block walls are masonry in C-29, and the fencing class C-13 leaves masonry out.
What do Westminster's soil, seismic and flood notes mean for a new slab or footing?
The City's table says to design for earthquakes and termites and to check flood status by parcel. Its Residential Code table lists seismic design category D2 or E, a frost line depth of 12 to 24 inches, termite damage very heavy and flood hazards as Yes/No. Footing depth, rebar layout and slab edges are therefore design items, not copy-and-paste ones.
We read no flood or liquefaction map for Westminster and no soils report requirement, so we make no claim about your lot. Wikipedia records a severe flood in 1938, and the City's own table leaves flood status open, which is reason enough to ask the Building Division whether an address needs a flood check before a new slab is poured.
Buried pipes matter here too. The City's plumbing amendment bars metal piping under a floor slab within a building and requires a 40 mil plastic sleeve or equivalent wrap on buried metal pipe, so the plumber and the concrete crew should agree on sleeves and penetrations before the pour. The same slab sits under many flooring jobs in Westminster.
How do heat and rain affect replacing a 1960s Westminster driveway or walk?
Old flatwork is expected to crack. With about 54 percent of homes built in the 1960s or 1970s (15,682 of 28,953 in the ACS 2024 estimates), many drives and walks are 47 to 66 years old. What matters is whether a crack steps up, whether the slab drains toward the house and whether roots or a leaking line are the cause, and a crew should say whether it is patching, resurfacing or replacing and why.
Heat decides the pour schedule. NOAA's 1991 to 2020 normals for the Santa Ana Fire Station show 30.0 days a year at or above 90 F and 2.2 at or above 100 F, while John Wayne Airport, about 8.9 miles southeast, averages only 12.8 days at 90 F. A hot-weather pour needs an early start, shade and planned curing, and a spot nearer the coast may see a milder summer than an inland one.
Rain comes in a few months. The Santa Ana station records 12.54 inches a year, 9.91 of them from December through March and 0.03 and 0.00 inch in July and August, so summer is the dry window and a winter pour needs a plan for covering fresh concrete.
What does concrete work cost in Westminster, and which license should the crew hold?
We found no Westminster concrete study, so the numbers come from Angi's 2026 Los Angeles pages, which cite customer surveys and pro data. Plain patio work is $4 to $13 per square foot, averaging $5,248, and a 20 by 20 foot slab is quoted at $1,600 to $5,200. Stamped work costs $15 to $30 per square foot with an average of $5,948, and a driveway $8 to $20 with an average of $7,270. A retaining wall averages $7,140 within $2,674 to $11,842, and we print no per-foot wall price because the spread is wide.
Labor has a government anchor: federal wage data for the Los Angeles-Long Beach-Anaheim metro area, which includes Orange County, put cement masons at a mean of $33.67 an hour in May 2025, a wage and not a billing rate. Minimum charges push small jobs above the per-foot averages, so demolition, haul-off, base, rebar and any wall engineering belong on separate proposal lines.
CSLB's C-8 class covers forming, pouring, placing and finishing concrete, with rebar-only placement left out. Westminster may also require its own business license, which we could not confirm, so ask for both numbers. Our license check guide shows how to verify the state one.
Concrete photos from Westminster and nearby communities
Forms, flatwork, walls and finished walks from Westminster and neighboring towns, shown at the stages that matter. Tap any photo to enlarge it.
What concrete costs around Westminster
These dollar figures are Los Angeles planning ranges, not a Westminster bid, and a written proposal should separate demolition, base work and any wall engineering. For the same property, see flooring in Westminster and decks in Westminster. Nearby Orange County pages: concrete in Garden Grove, concrete in Huntington Beach and concrete in Santa Ana. For Los Angeles, compare concrete in Los Angeles.
| 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 |
Other work we manage in Westminster
Westminster concrete questions, answered
Can I pour a concrete patio without a permit in Westminster?
Possibly. The City's exemption list names sidewalks and driveways not over 30 inches above grade, not a ground-level patio slab, and we could not read the City's own handout. Grading, a wall or a roofed cover changes the answer, so get the Building Division's reply before the pour and keep a copy.
Can I expand my driveway without a permit in Westminster?
Maybe, but the zoning cap comes first. Driveways and walkways together may cover 50 to 75 percent of the front yard depending on lot width, and 50 percent of a corner lot's street side yard. A driveway not over 30 inches above grade is on the exempt list. Check the cap before drawing a wider drive.
How much should a 20x20 concrete patio cost?
For a 20 by 20 foot patio, 400 square feet, Angi's 2026 Los Angeles page shows $1,600 to $5,200 inside a general $4 to $13 per square foot. We found no Westminster study. Demolition, base work, a decorative finish and minimum charges all shift the figure, so a site visit sets the price.
How much do contractors charge for concrete work in Westminster?
On Angi's 2026 Los Angeles pages, a plain patio runs $4 to $13 per square foot, a driveway $8 to $20 and stamped work $15 to $30, with small jobs costing more per foot because of minimum charges. We found no Westminster study, so treat these as planning ranges rather than a bid.
What is the maximum height of a retaining wall without a permit in Westminster?
The City's Administrative Code exempts retaining walls not over 4 feet, measured from the bottom of the footing to the top of the wall. A wall that holds a driveway or a slope is a harder case, and zoning limits walls to 3 feet in a front setback. Confirm taller or loaded walls with the Building Division.
Is 4 inches of concrete thick enough for a driveway?
Four inches is a common residential thickness in industry practice, not a code number we could cite for Westminster. Heavier vehicles and soft soil can call for more. Ask the crew to state thickness, base depth, rebar or mesh and joint spacing in the proposal, and compare the written numbers between bids.
How much does a 20x20 stamped concrete patio cost in Westminster?
Angi's 2026 Los Angeles page gives $15 to $30 per square foot for stamped work, which multiplies to $6,000 to $12,000 for a 400 square foot patio, and its Los Angeles average for a stamped patio is $5,948. We found no Westminster study, so base work, demolition and sealing are priced on a site visit.
Can I replace my front lawn with concrete or pavers in Westminster?
Only in part. Front and street side yards must be landscaped, decorative hardscape may count for no more than 50 percent of the required landscaped area, and removing more than 200 square feet of plants without using artificial turf first needs a Zoning Clearance. Ask the Building Division before ordering material.
What license does a concrete company need in Westminster?
Concrete work falls under CSLB's C-8 class, and block walls under masonry class C-29. The state number is the one to verify on the CSLB site before you accept a quote. We could not confirm Westminster's business license rules, so ask the City whether one applies to the crew you are hiring.
Describe the pour and what is there now
Tell us what you want poured, the rough size, the lot width and what stands there today, such as a cracked drive or a bare side yard. We bring the coverage cap, permit and footing questions to the first visit.