Concrete Parking Lot Curbing Calculator

Commercial parking lot curbing in the United States typically costs $18–$45 per linear foot installed, depending on curb profile and installation method. Standard 6-inch extruded mountable curb runs $18–$28/LF. Slip-form curb and gutter (6×18 inch) costs $28–$45/LF. Precast parking curbs (6×8 inch) installed with crane or forklift run $22–$38/LF.

Material breakdown: concrete at $150–$180/cubic yard delivered. A 6×18 inch curb and gutter profile uses roughly 0.15 cubic yards per linear foot — about $22–$27/LF in concrete alone. Extruded curb machines reduce labor versus hand-form but require minimum mobilization of $800–$1,500 for the extruder crew.

Removal of existing damaged curb adds $8–$15/LF. Asphalt saw-cut and adjustment at the curb line adds $3–$6/LF. Small projects under 200 LF often hit minimum mobilization charges that push per-foot cost to the high end of the range.

Extruded (mountable) curb: 4–6 inch high rolled curb extruded from a curb machine directly onto asphalt or compacted base — most economical for parking lot islands, landscape borders, and internal dividers. Allows vehicles to mount at low speeds. Standard in retail pad design.

Slip-form curb and gutter: monolithic concrete profile (typically 6-inch vertical face × 18-inch gutter pan) formed by a slip-form paver — standard for parking lot perimeters, drive entrances, and stormwater drainage. Integrates with catch basins and storm sewer. Required where code mandates positive drainage.

Precast concrete curb sections: factory-cast units set on prepared base — used for quick repairs, small additions, and areas where slip-form access is limited. Less common for new construction but useful for island extensions and retrofit projects.

Our calculator uses standard 6×18 inch slip-form and 6-inch extruded profiles as defaults. Barrier curb (8–12 inch non-mountable) costs 15–25% more and is used at building faces and pedestrian zones.

Coordinate curbing with stormwater design — curb and gutter profiles direct runoff to catch basins and storm sewer. Minimum slope of 1–2% toward drains is standard. Islands and peninsulas need mountable curb on the aisle side and barrier curb on landscape side where pedestrian protection is required.

Call 811 before excavation near existing utilities. New curb against existing asphalt requires a clean saw-cut edge and tack coat at the joint. Allow 7-day concrete cure before traffic loading; protect fresh curb from snowplow contact in northern climates.

Match curb height to wheel stop placement and striping layout — curbing installed after striping may require line adjustments ($0.25–$0.45/LF). Our calculator estimates new curb installation; use the asphalt calculator for adjacent pavement work.