102 Wonder World Dr · San Marcos, TX
Local Concrete Company & Contractor in San Marcos, TX
We pour and repair residential concrete in San Marcos: driveways, patios, walks, slabs and retaining walls. This town sits on two different grounds, black clay east of the Balcones Escarpment and shallow limestone west of it, and the concrete has to be built for whichever one is under your house.
Concrete Contractors Near Me: What We Pour in San Marcos
Every job below gets its own page with the city rules, the soil questions and the cost ranges that apply to it. Start with the one you need.
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Install · replace
Concrete Driveways
New drives, replacements and widening, including the city approach permit and the 6-inch apron the city spec calls for.
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Backyard slabs
Concrete Patios
Backyard slabs and extensions, sloped so water runs away from the house and sized for the furniture you actually own.
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Walks · entries
Sidewalks and Walkways
Front walks, side paths and public sidewalk panels built to the city's 5-foot, 4-inch standard where it applies.
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New construction
Foundations and Slabs
Shed pads, garage slabs and engineered house foundations on expansive clay.
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Finishes
Stamped and Decorative Finishes
Stamped patterns, stain, integral color and exposed aggregate, plus the sealing schedule each one needs in full sun.
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Fix in place
Concrete Repair
Cracks, broken steps, spalled surfaces and single panels cut out and replaced.
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Sloped lots
Retaining Walls
Poured and block walls for sloped lots on the Hill Country side, with drainage behind them.
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Business sites
Commercial Concrete
Site sidewalks, ADA routes, dumpster and equipment pads for small business properties.
Why Concrete Moves Here: Blackland Clay and Hill Country Limestone
Hays County straddles the Balcones Escarpment, the fault zone that separates the Edwards Plateau from the coastal plains. In San Marcos that line is close enough to matter lot by lot. Pick the side your lot is on:
Houston Black and Heiden clay: ground that shrinks and swells
The USDA soil survey describes Houston Black cracking open half an inch to four inches wide and a foot or more deep, and staying open 90 to 150 days in most years. When it rains, that clay swells back.
What it changes: concrete laid on it without moisture-conditioned base and real steel cracks where the ground heaves. Drainage away from the slab matters more than extra thickness.
Comfort soils: limestone 10 to 20 inches down
West of the escarpment the problem flips. Footings and wall bases hit rock early, and digging a trench can mean a rock saw or a breaker instead of a shovel.
What it changes: the price, before a yard of concrete shows up. Good bearing, slow digging, and slopes that often call for a retaining wall.
Neither is a reason not to pour. They are the reasons a good San Marcos bid lists base depth, rebar size and spacing, and joint layout instead of just a square-foot price.
Sources: USDA-NRCS official soil series descriptions (Houston Black, Comfort); Texas State Historical Association, Handbook of Texas, "Hays County" and "Balcones Escarpment."
How Much Does Concrete Work Cost in San Marcos?
We don't publish one price per square foot, because on the same street a driveway on flat clay and one on a limestone slope are different jobs. What we can give you is the published national range for each kind of work, so you can tell whether a bid is in the normal band.
| Job | Published range | Local details |
|---|---|---|
| Driveway (installed) | $8–$20 per sq ft | Driveway price factors |
| Patio, plain or broom finish | $4–$7 per sq ft | Patio price factors |
| Stamped finish | $8–$28 per sq ft | Pattern and color pricing |
| Sidewalk or walkway | $8–$12 per sq ft | Walkway price factors |
| Foundation slab, 8–10 in | $12–$18 per sq ft | Slab cost by size |
| Poured retaining wall | $30–$50 per face sq ft | Wall cost by material |
Three things move a San Marcos price the most: tearing out old concrete (often $2 to $6 a square foot on its own), how much base has to be brought in on clay, and whether rock has to be cut on the west side. On any tear-out, hold 10 to 15% in reserve. Old slabs hide things like roots, buried cleanouts and trash fill, and you only find them once the demo starts.
How a Concrete Pour Works, From Permit to Cure
Six stages, in order. The tags show the waits that are set by someone other than the crew.
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Site visit and grades
Before any priceWe measure, shoot grades, and find where water goes now. On clay, drainage decides more about how long concrete lasts than thickness does.
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Permit and HOA paperwork
HOA review: up to 30–60 daysA city driveway approach needs an Access Driveway Permit ($108 plus $15 for a residential approach). Patios and private flatwork are decided case by case on the city's Permit Requirement Determination form, so we ask before we dig.
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Excavation and base
Rock adds time on the west sideSoft or organic soil comes out; base goes in and gets compacted. The city's driveway detail sets #3 bar on chairs at 18 inches each way over compacted sand, a good floor for private work too.
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Forms, steel, inspection
City work: inspected firstForms set to grade, steel tied and chaired at mid-depth so it actually sits in the middle of the slab.
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Pour and finish
Summer: first lightConcrete is placed, screeded and finished, and control joints are tooled or saw-cut to a planned layout.
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Curing
At least 3 daysCuring compound goes on as soon as finishing is done, and the slab is kept from drying out for at least the first three days (NRMCA). Light foot traffic comes first; cars wait longer.
HOA timing: Blanco Vista's architectural review can take up to 30 days; La Cima's committee has up to 60. Curing: NRMCA Concrete in Practice 12, hot-weather concreting.
Edwards Aquifer Rules for Concrete Work in San Marcos
Part of San Marcos sits on the Edwards Aquifer recharge zone, the fractured limestone that feeds San Marcos Springs. New pavement there is regulated in ways it isn't in most Texas towns. The four numbers to know:
- 40%max impervious cover, Recharge Zone sites of 3 acres or less
- 50 ftwork stops around a cave or sinkhole found while digging
- 20%impervious cover for TCEQ's own-home exemption
- 0new impervious cover inside a Recharge Zone water quality zone
- Impervious cover caps. The city's Development Code limits total impervious cover on Recharge Zone sites to 40% on sites of 3 acres or less, and less on bigger sites. Concrete counts. A patio or driveway widening can push a lot over its cap even when the house never changes.
- Sensitive features. If digging in the recharge or transition zone opens a cave, sinkhole or solution cavity, the code says work stops within 50 feet until it is evaluated.
- State rules. Under TCEQ's Edwards Aquifer rules, an owner building their own single-family home is exempt from a pollution abatement plan only up to 20% impervious cover, and erosion controls are still required.
- Creeks and the river. Water quality zones along creeks and the San Marcos River allow no new impervious cover inside them in the Recharge Zone.
If you don't know which zone your lot is in, find out before you design a big slab. It is cheaper to resize a patio on paper than to remove one.
Sources: City of San Marcos Development Code (ORD-2026-08) §6.2–6.3; Texas Administrative Code, 30 TAC §213.5.
Cracked or Sunken Concrete? When Concrete Repair Beats Replacement
Not every crack is a problem. Concrete shrinks as it cures, and fine cracks along or near joints are normal. The ones worth acting on are cracks that grow wider, edges that drop and trip people, and panels that tilt water back toward the house.
On clay, a single bad panel often means a drainage problem at that spot: a downspout dumping beside the slab or a low corner holding water. Fixing the concrete without fixing the water just schedules the next repair. Cutting out and replacing one section costs less than a whole new drive, and we'll tell you when that's the right call.
HOA and Historic District Approval for Concrete Projects
Many San Marcos subdivisions want plans before work starts, and the timelines are longer than people expect. Open your neighborhood:
La Cima $60 · up to 60 days
Lists patios and driveway extensions among the projects needing architectural approval, charges a $60 review fee, and gives the committee up to 60 days to respond.
Blanco Vista up to 30 days
Takes exterior changes through its architectural review on TownSq, and a response can take up to 30 days.
Willow Creek deed restrictions
The deed restrictions require entry drives paved in asphalt or concrete, and from Section 6 on, plans go to the architectural committee first.
Kissing Tree ACC review
Routes applications through its Architecture Control Committee.
The seven local historic districts COA first
Belvin Street, Hopkins Street, Burleson Street, Dunbar, Lindsey-Rogers, San Antonio Street and Downtown. Exterior changes to "design, material, or outer appearance" need a Certificate of Appropriateness before other permits. Call Planning before planning a new drive there.
We draw the site plan your committee asks for: dimensions, finish and color, and distance to property lines.
Concrete Companies Near Me vs. Ready-Mix Suppliers: Who to Call
Search for "concrete near me" and you get two kinds of business mixed together:
| You need… | Ready-mix plant | Concrete contractor |
|---|---|---|
| Concrete by the cubic yard, delivered | Yes | Buys it from a plant |
| Digging, base and forms | No | Yes |
| Steel, finishing, joints, curing | No | Yes |
| Permit and HOA paperwork | No | Yes |
If you're pouring a small pad yourself and only need the material, call a plant directly; it costs less than having us resell it. If you want the finished slab, call us. We order the mix to the job (the city specifies 3,000 psi concrete for residential driveway approaches, a sensible minimum for most home flatwork) and schedule the truck around the weather.
Cement Contractors Near Me: Five Questions to Ask Any Bidder
Whoever you hire, these questions separate a real bid from a guess:
| Ask | A real answer | Keep looking if… |
|---|---|---|
| How thick, and with what steel? | Thickness plus bar size and spacing, or the fiber or wire being used | "It's reinforced" |
| What goes under it? | Base material and depth, and whether the clay gets moisture-conditioned | "We pour on what's there" |
| Where do the joints go? | A joint plan drawn before the pour | "We'll cut them after" |
| Who handles the permit and the HOA? | A name, in writing | "You don't need one" |
| What happens in the first three days? | Curing compound or wet curing, and when traffic can go on | No mention of curing |
Where Our Concrete Crews Work in San Marcos
We work across San Marcos, from HOA subdivisions like Blanco Vista, Trace, Willow Creek, La Cima and Kissing Tree to the older streets in and around the historic districts near downtown and the Texas State campus. We also take jobs in the nearby parts of Hays County when the drive makes sense for both of us. The office is on Wonder World Drive, so most of town is a short drive for the crew.
Questions About Hiring a San Marcos Concrete Company
Do you give free estimates in San Marcos?
Yes. New pours need a short site visit because grade, drainage and access decide most of the price. Small repairs can sometimes be priced from photos first.
How far out do you work?
San Marcos and the nearby parts of Hays County. If your job is far enough out that our drive time would show up in your price, we will say so and point you to someone closer.
Can you pour in July and August?
Yes, with a different schedule. NOAA's 1991–2020 normals put San Marcos average highs at 95.7°F in July and 96.8°F in August, and ACI 305 reports that curing at 100°F for the first day can cut 28-day strength by 10 to 15%. Summer pours start at first light, the base is dampened ahead of the truck, and the slab gets curing compound as soon as it is finished.
Who pulls the city permit for a driveway approach?
We do it as part of the job when the work touches the city right-of-way. The City of San Marcos Access Driveway Permit for a residential (Type I) approach is $108 plus a $15 technology fee, filed through MGO Connect, and a city inspector checks the work.
Do you sell or deliver concrete by the yard?
No. We are a contractor, not a ready-mix plant. If you want concrete dropped at your place to pour yourself, call a ready-mix supplier directly; you will pay less than going through us.
Tell us about the job
A few lines is plenty. We reply with questions, a request for photos, or a time to look at it in person.