Search sidewalk repair costs and you get per-square-foot ranges from contractor marketing pages. That is not where this question starts. The biggest variable is not concrete. It is your city: whether it assigns the repair to you at all, and whether it adds its own fees when it does the work for you.
The one owner-share figure a city program actually publishes
Chicago's Shared Cost Sidewalk Program puts the owner's share at roughly $600 to $1,500, with a 50% discount for seniors and owners with disabilities, which brings that same range to about $300 to $750. The city covers the balance of the job.
Sit with that for a second. Two neighbors get the same broken slab replaced by the same crew under the same program, and the one who qualifies as a senior pays half what the other one pays. Nothing about the concrete changed. The discount did.
And that is a subsidized number, not a market price. It tells you what a major city treats as a reasonable owner contribution for a residential sidewalk repair. Use it as a floor when you look at a private bid. Do not mistake it for the cost of a job an owner pays alone.
What the city adds when it does the work for you
The expensive path in an owner-pays city is letting the deadline run out. In Oakland, owners must pay all costs, and the code is explicit that this includes the city's inspection and administration fees. If maintenance is neglected, the city may perform the work itself and assess the owner for it. You lose control of both the contractor and the scope, and you pay the city's overhead on top.
New York City runs the same mechanism on a stated clock. If an owner does not repair within 75 days of a violation notice, DOT may hire a contractor and bill the owner. The repair still happens. You just stop having any say in what it costs.
Notice what neither city publishes: an owner-facing price for that outcome. That silence is the point. A city-arranged repair is an open-ended number that shows up after the work is done, not a quote you can put next to two others and choose from.
In some cities the number is zero
Cost is a jurisdiction question before it is a construction question. In Nashville, the transportation department states it is responsible for all aspects of the city's sidewalks, and residents report damage rather than receiving a bill. In Boston, the answer depends on your street: on a public way the city handles maintenance, and on a private way the owner is responsible for all maintenance of the street and sidewalk both.
Two identical cracks, two identical slabs, and the bill is zero in one city and open-ended in another. No per-square-foot table captures that.
Why this page does not give you a per-square-foot number
Because we cannot source one to a city or a program. An invented range is worse than no range. Contractor pricing swings on the local market, the scope, what is under the slab, and how many properties a crew can knock out on one mobilization. Anyone handing you a national average is guessing, and two local bids collected in an afternoon will beat any published table.
What this site can tell you, with a citation, is who is legally on the hook in your city. That is the part that decides whether you are paying anything at all.
How to get a real number for your address
Confirm who owes the duty first. Look up your city's rule before you call anyone. If the city owns the repair, the rest of this list does not apply to you.
Get two or three local bids for the actual defect. Have them price the specific slabs, not a frontage estimate over the phone.
Ask public works whether a cost-share or tree-damage program exists, and when the application window opens. In Chicago the window opens once a year and fills within days, and missing it costs you the entire subsidy.
Ask what the city adds if it does the work instead. In Oakland that is inspection and administration fees on top of the repair. Getting that answer in advance is what makes the deadline feel real.
Start the clock from the notice date. If you have a violation in hand, the deadline runs from the date printed on it, not from when you start collecting bids.
Find the rule for your city, with the code section cited: browse by issue.