Concrete sidewalk building in Saint Charles MO - safe footing when it's wet
Cracked, sunken or missing walk to your door? We build a concrete sidewalk on a packed base, with a finish that grips in the rain.

- Licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
What does it take to build a new concrete sidewalk in Saint Charles?
Concrete sidewalk building in Saint Charles gives your property a new walk. The job starts below ground, where we strip out the topsoil and anything that will rot and pack down any loose fill so the concrete has firm ground under it.
Maybe the old walk has heaved and cracked, or there's a worn dirt path from the driveway to the front door, or you're adding concrete steps and need a walk to meet them. The price mostly comes down to how long and wide the walk is, whether an old one has to be broken out first, how much digging the ground needs and whether the walk meets the city sidewalk or the street. The schedule depends on the weather, since we don't want to pour right before a freeze, and on a city permit if the walk touches public land. My written estimate lists each part of the job separately, so you can see what you're paying for.
How we build a concrete sidewalk
I start by asking where the water runs on your lot, because a walk that tips toward the house sends rain straight at your foundation. Then we dig out the topsoil and roots and pack the subgrade, the ground the slab sits on, so it doesn't settle later the way raked dirt does. We pack it evenly over old utility trenches and where the walk meets the driveway, so the support stays the same from one end to the other. If your walk ties into the city sidewalk or the street, we sort that out before we set forms. We set the forms so the walk falls slightly away from the house and pour early in the day, because midday heat leaves a weak, dusty top. A walk has to be safe when it's wet, so we pick a finish with grip over a glossy look, usually a broom finish, a light texture dragged across the wet surface. Then we cut control joints, shallow grooves that give the slab a straight place to crack instead of a random one, and let it cure, the waiting period while it gains strength, before anyone uses it. If the budget gets tight, the base is the last thing I'd cut. Nobody sees it on day one, but I spent years repairing walks where someone saved money there.
A walk usually connects to other concrete, so it makes sense to plan the pieces together. If your garage floor concrete is cracked or sinking, I can look at it on the same visit. If you want color, a border or a pattern near the front door, our decorative concrete work can sit right alongside a plain walk.
Plain broom-finish walk
This suits most front, side and back walks, because the broom texture gives shoes something to grip in the rain and it costs less than a decorative surface. It's the finish I recommend to most people for a walk that gets wet.
Tear-out and replacement
This is for a walk that has sunk, heaved or broken into pieces. We break out the old concrete and fix what's underneath before we pour, because a new slab on the same bad ground ends up the same way.
Walk with a decorative border
This suits a front walk where looks matter, with a plain, gripping center and a colored or patterned edge. You get some style without giving up a safe surface where people actually step.
What changes a concrete sidewalk job in Saint Charles
Any work that affects a public sidewalk in Saint Charles needs a Sidewalk/Driveway permit from the city's Engineering Department. Public land covers more than the sidewalk itself. The city also counts land where it holds an easement and land used as a sidewalk, street or alley, so a walk that runs out to the curb can reach city land sooner than you'd expect. Before we start, we check with the office that covers your address. When a permit is needed, we handle the filing, keep you posted and tell you if another office has to sign off too.
Our winters freeze and thaw over and over, and that breaks up a lot of the older walks we're called to replace, usually where the base was thin or water sat under the slab. For concrete that goes through hard freezing and thawing, the guidance is to order good quality air-entrained concrete. That mix has tiny air bubbles that give freezing water room to expand, so ask any contractor, us included, which mix they'll order for your walk. We see the same weather and the same worn-out walks on jobs in St. Peters and O'Fallon.
Why Saint Charles homeowners call K&L Saint Charles Concrete for sidewalks
I come to every estimate
I walk your site myself and ask how the walk will be used, and our crew lead runs the work once it starts. You hear the plan from the person who wrote the estimate.
Building since 2013, repairing before that
Before 2013 I spent years fixing cracked walks and sunken steps for a property management company, so I know which shortcuts turn into repairs. That's why we put our effort into the digging and the base you'll never see.
Licensed and insured, start to finish
We're licensed and insured. You aren't left carrying the risk of the work being done on your property.
Based right here in Saint Charles
We're based in Saint Charles, MO and work in cities across St. Charles County and nearby St. Louis County. If you don't see your city listed, call and ask.
On a walk, the part that matters most is the ground under it, and I'd rather show you that on site than describe it here. Send us a message or call (636) 277-0973 to set up a visit.
Request a quoteGet a free on-site estimate for your new sidewalk
We reply within one business day to set up a time, and the visit is free with no pressure to book. I'll walk the route with you and explain your options. Then I'll send a written estimate with each part of the job listed separately.
What happens after you call about a new walk
Call or send a message
Reach us by phone or through the form, and we'll set a day to come out. We'll ask where the walk will run so we know what to look at.
I walk the site with you
I look at the ground and where the water goes, ask how you'll use the walk and explain your options before I write anything. Your estimate lists the digging, base, concrete, finish and any tear-out as separate lines, so you can see what each part costs.
We line up the permit
Once you say yes, we check what your address needs from the city or county and handle any filing. City Sidewalk/Driveway permits can often be issued within a day, and walk-up requests are issued the same day.
We build it, then walk it
Our crew lead runs the job on site, from digging out to cutting the joints. At the end I walk the finished sidewalk with you and explain how to care for it.
Frequently asked questions
Do I need a permit to build a sidewalk in Saint Charles, MO?
You need a city Sidewalk/Driveway permit if the work affects a public sidewalk or other city land, such as the strip where your walk meets the curb. Whether your walk reaches city land depends on your lot, so we check with the office for your address before we start and handle the filing when a permit is needed.
When is the best time to pour a concrete sidewalk in Saint Charles?
The best time is a stretch when freezing weather isn't expected shortly after the pour, because concrete that freezes while it's still soaked with water can be damaged. Late fall, winter and early spring call for extra caution, so in those months we plan the pour around the forecast.
How do I take care of a new concrete sidewalk in its first winter?
Skip deicing chemicals on a new walk for its first winter, and use them in moderate amounts after that. Shovel it clear instead, and I'll go over the rest of the care when we walk the finished job together.
How much does a new concrete sidewalk cost near Saint Charles?
Standard flat concrete for a walk, including materials and labor, usually costs about $3 to $11 per square foot in the St. Louis area. Where your walk lands depends on things like tear-out, how much digging and base work the ground needs, a tie-in to city land and the finish you pick. For a Saint Charles price on your walk, our on-site estimate lists each part separately, and the work is backed by our satisfaction guarantee.
What should I tell a contractor if cars cross my sidewalk?
Point out every spot where a car will cross the walk, because those spots may need a thicker or reinforced section. One way to reinforce it is rebar, steel bars set inside the slab to help hold it together under weight, and we plan those spots into the estimate from the start.
What is the best way to seal a new concrete sidewalk?
One option is a breathable concrete sealer or water repellent made for slabs, applied once the concrete is reasonably dry. Late summer after a few dry days is an ideal time to apply it, and a breathable product lets moisture escape from the slab instead of trapping it.
Other concrete work around your walk
Garage floor concrete
If the walk runs to a garage with a cracked, sunken or worn-out floor, it can make sense to look at both on one visit and plan the work together.
Decorative concrete
When you want the front of the house to look finished, color, borders or patterns can dress up the area near the door while the main path keeps its gripping surface.
St Charles, MO
Get a price on your new walk
Call (636) 277-0973 or send the form with your walk's rough length and width and whether it meets a public sidewalk, street or driveway, so I know what to look at on the visit.
